Local reactions were collected in electronic diary (e-diary) or during unscheduled clinical assessments from Day 1 to 7 after Dose 1. Redness and swelling were measured and recorded in measuring device unit (mdu) where, 1 mdu = 0.5 centimeter (cm) and were graded as mild (\>=0.5 to 2.0 cm), moderate (\>2.0 to 7.0 cm), severe (\>7.0 cm) and Grade 4 (necrosis \[redness and swelling\] or exfoliative dermatitis \[redness\]). Pain at injection site was graded as mild (did not interfere with activity), moderate (interfered with activity), severe (prevented daily activity) and Grade 4 Emergency room (ER) visit or hospitalization). Grade 4 reactions were classified by investigator or medically qualified person. Reactions reported as adverse events in case report form within 7 days of study vaccination also included. Two-sided 95% confidence interval was based on Clopper and Pearson method.

Local reactions were collected in e-diary or during unscheduled clinical assessments from Day 1 to Day 7 after Dose 2. Redness and swelling were measured and recorded in mdu where, 1 mdu =0.5 cm and were graded as mild (\>=0.5 to 2.0 cm), moderate (\>2.0 to 7.0 cm), severe (\>7.0 cm) and Grade 4 (necrosis \[redness and swelling\] or exfoliative dermatitis \[redness\]). Pain at injection site was graded as mild (did not interfere with activity), moderate (interfered with activity), severe (prevented daily activity) and Grade 4 ER visit or hospitalization. Grade 4 reactions were classified by investigator or medically qualified person. Reactions reported as adverse events in case report form within 7 days of study vaccination were also included. Two-sided 95% CI was based on Clopper and Pearson method.

Local reactions were collected in e-diary or during unscheduled clinical assessments from Day 1 to Day 7 after Dose 3. Redness and swelling were measured and recorded in mdu where, 1 mdu =0.5 cm and were graded as mild (\>=0.5 to 2.0 cm), moderate (\>2.0 to 7.0 cm), severe (\>7.0 cm) and Grade 4(necrosis \[redness and swelling\] or exfoliative dermatitis \[redness\]). Pain at injection site was graded as mild (did not interfere with activity), moderate (interfered with activity), severe (prevented daily activity) and Grade 4 ER visit or hospitalization. Grade 4 reactions were classified by investigator or medically qualified person. Reactions reported as adverse events in case report form within 7 days of study vaccination also included. Two-sided 95% CI was based on Clopper and Pearson method.

Systemic events were recorded in an e-diary and at unscheduled clinical assessments from Day 1 to Day 7 after Dose 1. Fever: oral temperature \>= 38.0 degree Celsius (deg C); categorized as \>=38.0 deg C, 38.0 to 38.4 deg C, \>38.4 to 38.9 deg C, \>38.9 to 40.0 deg C and \>40.0 deg C. Fatigue, headache, chills, new or worsened muscle pain \& new or worsened joint pain: mild (did not interfere with activity), moderate (some interference with activity), severe (prevented daily routine activity). Vomiting: mild:1-2 times in 24 hours, moderate: \>2 times in 24 hours; severe: required intravenous hydration. Diarrhea: mild: 2-3 loose stools in 24 hours, moderate: 4-5 loose stools in 24 hours, severe: 6 or more loose stools in 24 hours. Grade 4 for all events: except fever; ER visit/hospitalization and were classified by investigator or medically qualified person. Events reported as AEs in CRF within 7 days after vaccination were included. Exact 95% CI based on Clopper and Pearson method.

Systemic events were recorded in an e-diary and at unscheduled clinical assessments from Day 1 to Day 7 after Dose 2. Fever: oral temperature \>= 38.0 C; categorized as \>=38.0 deg C, 38.0 to 38.4 deg C, \>38.4 to 38.9 deg C, \>38.9 to 40.0 deg C and \>40.0 deg C. Fatigue, headache, chills, new or worsened muscle pain \& new or worsened joint pain: mild (did not interfere with activity), moderate (some interference with activity), severe (prevented daily routine activity). Vomiting: mild:1-2 times in 24 hours, moderate: \>2 times in 24 hours; severe: required intravenous hydration. Diarrhea: mild: 2-3 loose stools in 24 hours, moderate: 4-5 loose stools in 24 hours, severe: 6 or more loose stools in 24 hours. Grade 4 for all events: except fever; ER visit/hospitalization and were classified by investigator or medically qualified person. Events reported as AEs in CRF within 7 days after vaccination were included. Exact 95% CI based on Clopper and Pearson method.

Systemic events were recorded in an e-diary and at unscheduled clinical assessments from Day 1 to Day 7 after Dose 3. Fever: oral temperature \>= 38.0 C; categorized as \>=38.0 deg C, 38.0 to 38.4 deg C, \>38.4 to 38.9 deg C, \>38.9 to 40.0 deg C and \>40.0 deg C. Fatigue, headache, chills, new or worsened muscle pain \& new or worsened joint pain: mild (did not interfere with activity), moderate (some interference with activity), severe (prevented daily routine activity). Vomiting: mild:1-2 times in 24 hours, moderate: \>2 times in 24 hours; severe: required intravenous hydration. Diarrhea: mild: 2-3 loose stools in 24 hours, moderate: 4-5 loose stools in 24 hours, severe: 6 or more loose stools in 24 hours. Grade 4 for all events: except fever; ER visit/hospitalization and were classified by investigator or medically qualified person. Events reported as AEs in CRF within 7 days after vaccination were included. Exact 95% CI based on Clopper and Pearson method.

Local reactions were collected in e-diary or during unscheduled clinical assessments from Day 1 to Day 7 after Dose 1. Redness and swelling were measured and recorded in mdu where, 1 mdu =0.5 cm and were graded as mild (\>=0.5 to 2.0 cm), moderate (\>2.0 to 7.0 cm), severe (\>7.0 cm) and Grade 4 (necrosis \[redness and swelling\] or exfoliative dermatitis \[redness\]). Pain at injection site was graded as mild (did not interfere with activity), moderate (interfered with activity), severe (prevented daily activity) and Grade 4 ER visit or hospitalization. Grade 4 reactions were classified by investigator or medically qualified person. Reactions reported as adverse events in case report form within 7 days of study vaccination were also included. Two-sided 95% CI was based on Clopper and Pearson method.

Local reactions were collected in e-diary or during unscheduled clinical assessments from Day 1 to Day 7 after Dose 2. Redness and swelling were measured and recorded in mdu where, 1 mdu =0.5 cm and were graded as mild (\>=0.5 to 2.0 cm), moderate (\>2.0 to 7.0 cm), severe (\>7.0 cm) and Grade 4 (necrosis \[redness and swelling\] or exfoliative dermatitis \[redness\]). Pain at injection site was graded as mild (did not interfere with activity), moderate (interfered with activity), severe (prevented daily activity) and Grade 4 ER visit or hospitalization. Grade 4 reactions were classified by investigator or medically qualified person. Reactions reported as adverse events in case report form within 7 days of study vaccination were also included. Two-sided 95% CI was based on Clopper and Pearson method.

Local reactions were collected in e-diary or during unscheduled clinical assessments from Day 1 to Day 7 after Dose 3. Redness and swelling were measured and recorded in mdu where, 1 mdu =0.5 cm and were graded as mild (\>=0.5 to 2.0 cm), moderate (\>2.0 to 7.0 cm), severe (\>7.0 cm) and Grade 4 (necrosis \[redness and swelling\] or exfoliative dermatitis \[redness\]). Pain at injection site was graded as mild (did not interfere with activity), moderate (interfered with activity), severe (prevented daily activity) and Grade 4 ER visit or hospitalization. Grade 4 reactions were classified by investigator or medically qualified person. Reactions reported as adverse events in case report form within 7 days of study vaccination were also included. Two-sided 95% CI was based on Clopper and Pearson method.

Systemic events were recorded in an e-diary and at unscheduled clinical assessments from Day 1 to Day 7 after Dose 1. Fever: oral temperature \>= 38.0 C; categorized as \>=38.0 deg C, 38.0 to 38.4 deg C, \>38.4 to 38.9 deg C, \>38.9 to 40.0 deg C and \>40.0 deg C. Fatigue, headache, chills, new or worsened muscle pain \& new or worsened joint pain: mild (did not interfere with activity), moderate (some interference with activity), severe (prevented daily routine activity). Vomiting: mild:1-2 times in 24 hours, moderate: \>2 times in 24 hours; severe: required intravenous hydration. Diarrhea: mild: 2-3 loose stools in 24 hours, moderate: 4-5 loose stools in 24 hours, severe: 6 or more loose stools in 24 hours. Grade 4 for all events: except fever; ER visit/hospitalization and were classified by investigator or medically qualified person. Events reported as AEs in CRF within 7 days after vaccination were included. Exact 95% CI based on Clopper and Pearson method.

Systemic events were recorded in an e-diary and at unscheduled clinical assessments from Day 1 to Day 7 after Dose 2. Fever: oral temperature \>= 38.0 C; categorized as \>=38.0 deg C, 38.0 to 38.4 deg C, \>38.4 to 38.9 deg C, \>38.9 to 40.0 deg C and \>40.0 deg C. Fatigue, headache, chills, new or worsened muscle pain \& new or worsened joint pain: mild (did not interfere with activity), moderate (some interference with activity), severe (prevented daily routine activity). Vomiting: mild:1-2 times in 24 hours, moderate: \>2 times in 24 hours; severe: required intravenous hydration. Diarrhea: mild: 2-3 loose stools in 24 hours, moderate: 4-5 loose stools in 24 hours, severe: 6 or more loose stools in 24 hours. Grade 4 for all events: except fever; ER visit/hospitalization and were classified by investigator or medically qualified person. Events reported as AEs in CRF within 7 days after vaccination were included. Exact 95% CI based on Clopper and Pearson method.

Systemic events were recorded in an e-diary and at unscheduled clinical assessments from Day 1 to Day 7 after Dose 3. Fever: oral temperature \>= 38.0 C; categorized as \>=38.0 deg C, 38.0 to 38.4 deg C, \>38.4 to 38.9 deg C, \>38.9 to 40.0 deg C and \>40.0 deg C. Fatigue, headache, chills, new or worsened muscle pain \& new or worsened joint pain: mild (did not interfere with activity), moderate (some interference with activity), severe (prevented daily routine activity). Vomiting: mild:1-2 times in 24 hours, moderate: \>2 times in 24 hours; severe: required intravenous hydration. Diarrhea: mild: 2-3 loose stools in 24 hours, moderate: 4-5 loose stools in 24 hours, severe: 6 or more loose stools in 24 hours. Grade 4 for all events: except fever; ER visit/hospitalization and were classified by investigator or medically qualified person. Events reported as AEs in CRF within 7 days after vaccination were included. Exact 95% CI based on Clopper and Pearson method.

Local reactions were collected in e-diary or during unscheduled clinical assessments from Day 1 to Day 7 after Dose 1. Redness and swelling were measured and recorded in mdu where, 1 mdu =0.5 cm and were graded as mild (\>=0.5 to 2.0 cm), moderate (\>2.0 to 7.0 cm), severe (\>7.0 cm) and Grade 4 (necrosis \[redness and swelling\] or exfoliative dermatitis \[redness\]). Tenderness at injection site was graded as mild (hurts if gently touched), moderate (hurts if gently touched with crying), severe (causes limitation of limb movement) and Grade 4 ER visit or hospitalization. Grade 4 reactions were classified by investigator or medically qualified person. Reactions reported as adverse events in case report form within 7 days of study vaccination were also included. Two-sided 95% CI was based on Clopper and Pearson method.

Local reactions were collected in e-diary or during unscheduled clinical assessments from Day 1 to Day 7 after Dose 2. Redness and swelling were measured and recorded in mdu where, 1 mdu =0.5 cm and were graded as mild (\>=0.5 to 2.0 cm), moderate (\>2.0 to 7.0 cm), severe (\>7.0 cm) and Grade 4 (necrosis \[redness and swelling\] or exfoliative dermatitis \[redness\]). Tenderness at injection site was graded as mild (hurts if gently touched), moderate (hurts if gently touched with crying), severe (causes limitation of limb movement) and Grade 4 ER visit or hospitalization. Grade 4 reactions were classified by investigator or medically qualified person. Reactions reported as adverse events in case report form within 7 days of study vaccination were also included. Two-sided 95% CI was based on Clopper and Pearson method.

Local reactions were collected in e-diary or during unscheduled clinical assessments from Day 1 to Day 7 after Dose 3. Redness and swelling were measured and recorded in mdu where, 1 mdu =0.5 cm and were graded as mild (\>=0.5 to 2.0 cm), moderate (\>2.0 to 7.0 cm), severe (\>7.0 cm) and Grade 4 (necrosis \[redness and swelling\] or exfoliative dermatitis \[redness\]). Tenderness at injection site was graded as mild (hurts if gently touched), moderate (hurts if gently touched with crying), severe (causes limitation of limb movement) and Grade 4 ER visit or hospitalization for severe tenderness at injection site). Grade 4 reactions were classified by investigator or medically qualified person. Reactions reported as adverse events in case report form within 7 days of study vaccination were also included. Two-sided 95% CI was based on Clopper and Pearson method.

Systemic events recorded in an e-diary and at unscheduled clinical assessments from Day 1 to 7 after Dose 1. Fever: oral temperature \>= 38.0 C; categorized as \>=38.0 deg C, 38.0 to 38.4 deg C, \>38.4 to 38.9 deg C, \>38.9 to 40.0 deg C and \>40.0 deg C. Decreased appetite: mild (decreased interest in eating), moderate (decreased oral intake), severe (refusal to feed). Drowsiness: mild (increased or prolonged sleeping bouts), moderate (slightly subdued interfering with daily activity), severe (disabling; not interested in usual daily activity). Irritability: mild (easily consolable), moderate (requiring increased attention), severe (Inconsolable; crying cannot be comforted). Grade 4 for all events except fever: ER visit/hospitalization and were classified by investigator or medically qualified person. Events reported as AEs in the CRF within 7 days after vaccination were also included. Exact 95% CI based on Clopper and Pearson method.

Systemic events recorded in an e-diary and at unscheduled clinical assessments from Day 1 to 7 after Dose 2.Fever: oral temperature \>= 38.0 C; categorized as \>=38.0 deg C, 38.0 to 38.4 deg C, \>38.4 to 38.9 deg C, \>38.9 to 40.0 deg C and \>40.0 deg C. Decreased appetite: mild (decreased interest in eating), moderate (decreased oral intake),severe (refusal to feed).Drowsiness: mild (increased or prolonged sleeping bouts), moderate (slightly subdued interfering with daily activity), severe (disabling; not interested in usual daily activity). Irritability: mild (easily consolable), moderate (requiring increased attention), severe (Inconsolable; crying cannot be comforted).Grade 4 for all events except fever: ER visit/hospitalization and were classified by investigator or medically qualified person. Events reported as AEs in the CRF within 7 days after vaccination were also included. Exact 95% CI based on Clopper and Pearson method.

Systemic events recorded in an e-diary and at unscheduled clinical assessments from Day 1 to 7 after Dose 3. Fever: oral temperature \>= 38.0 C; categorized as \>=38.0 deg C, 38.0 to 38.4 deg C, \>38.4 to 38.9 deg C, \>38.9 to 40.0 deg C and \>40.0 deg C. Decreased appetite: mild (decreased interest in eating), moderate (decreased oral intake), severe (refusal to feed). Drowsiness: mild (increased or prolonged sleeping bouts), moderate (slightly subdued interfering with daily activity), severe (disabling; not interested in usual daily activity).Irritability: mild (easily consolable), moderate (requiring increased attention), severe(Inconsolable; crying cannot be comforted).Grade 4 for all events except fever: ER visit/hospitalization and were classified by investigator or medically qualified person. Events reported as AEs in the CRF within 7 days after vaccination were also included. Exact 95% CI based on Clopper and Pearson method.

An AE was defined as any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. Percentage of participants reporting AEs from dose 1 to 1 month after dose 2 were reported in this outcome measure. Exact 2-sided 95% CI based on the Clopper and Pearson method. Only AEs collected by non-systematic assessment (i.e. excluding local reactions and systemic events) were reported in this outcome measure.

An AE was defined as any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. Percentage of participants reporting AEs from dose 3 to 1 month after dose 3 were reported in this outcome measure. Only AEs collected by non-systematic assessment (i.e. excluding local reactions and systemic events) were reported in this outcome measure. Exact 2-sided 95% CI based on the Clopper and Pearson method.

A SAE was defined as any untoward medical occurrence that at any dose resulted in death, was life-threatening; resulted in persistent disability/incapacity; constituted a congenital anomaly/birth defect; was important medical event; required inpatient hospitalization or prolongation of existing hospitalization, was a suspected transmission via a Pfizer product of an infectious agent, pathogenic or non-pathogenic. Exact 2-sided 95% CI based on the Clopper and Pearson method.

An SAE was defined as any untoward medical occurrence that at any dose resulted in death, was life-threatening; resulted in persistent disability/incapacity; constituted a congenital anomaly/birth defect; was an important medical event; required inpatient hospitalization or prolongation of existing hospitalization, was a suspected transmission via a Pfizer product of an infectious agent, pathogenic or non-pathogenic Exact 2-sided 95% CI based on the Clopper and Pearson method.

An AE was defined as any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. Percentage of participants reporting AEs from dose 1 to 1 month after dose 2 were reported in this outcome measure. Exact 2-sided 95% CI based on the Clopper and Pearson method. Only AEs collected by non-systematic assessment (i.e. excluding local reactions and systemic events) were reported in this outcome measure.

An AE was defined as any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. Exact 2-sided 95% CI based on the Clopper and Pearson method. Percentage of participants reporting AEs from dose 3 to 1 month after dose 3 were reported in this outcome measure. Only AEs collected by non-systematic assessment (i.e. excluding local reactions and systemic events) were reported in this outcome measure.

An SAE was defined as any untoward medical occurrence that at any dose resulted in death, was life-threatening; resulted in persistent disability/incapacity; constituted a congenital anomaly/birth defect; was an important medical event; required inpatient hospitalization or prolongation of existing hospitalization, was a suspected transmission via a Pfizer product of an infectious agent, pathogenic or non-pathogenic. Exact 2-sided 95% CI based on the Clopper and Pearson method.

An SAE was defined as any untoward medical occurrence that at any dose resulted in death, was life-threatening; resulted in persistent disability/incapacity; constituted a congenital anomaly/birth defect; was an important medical event; required inpatient hospitalization or prolongation of existing hospitalization, was a suspected transmission via a Pfizer product of an infectious agent, pathogenic or non-pathogenic. Exact 2-sided 95% CI based on the Clopper and Pearson method.

An AE was defined as any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. Percentage of participants reporting AEs from dose 1 to 1 month after dose 2 were reported in this outcome measure. Exact 2-sided 95% CI based on the Clopper and Pearson method. Only AEs collected by non-systematic assessment (i.e. excluding local reactions and systemic events) were reported in this outcome measure.

An AE was defined as any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. Percentage of participants reporting AEs from dose 3 to 1 month after dose 3 were reported in this outcome measure. Exact 2-sided 95% CI based on the Clopper and Pearson method.Only AEs collected by non-systematic assessment (i.e. excluding local reactions and systemic events) were reported in this outcome measure.

An SAE was defined as any untoward medical occurrence that at any dose resulted in death, was life-threatening; resulted in persistent disability/incapacity; constituted a congenital anomaly/birth defect; was an important medical event; required inpatient hospitalization or prolongation of existing hospitalization, was a suspected transmission via a Pfizer product of an infectious agent, pathogenic or non-pathogenic.Exact 2-sided 95% CI based on the Clopper and Pearson method.

An SAE was defined as any untoward medical occurrence that at any dose resulted in death, was life-threatening; resulted in persistent disability/incapacity; constituted a congenital anomaly/birth defect; was an important medical event; required inpatient hospitalization or prolongation of existing hospitalization, was a suspected transmission via a Pfizer product of an infectious agent, pathogenic or non-pathogenic. Exact 2-sided 95% CI based on the Clopper and Pearson method.

Local reactions were collected in e-diary or during unscheduled clinical assessments from Day 1 to Day 7 after Dose 1. Redness and swelling were measured and recorded in mdu where, 1 mdu =0.5 cm and were graded as mild \>2.0 to 5.0 cm), moderate (\>5.0 to 10.0), severe \>10.0 cm) and Grade 4 (necrosis \[redness and swelling\] or exfoliative dermatitis \[redness\]). Pain at injection site was graded as mild (did not interfere with activity), moderate (interfered with activity), severe (prevented daily activity) and Grade 4 ER visit or hospitalization for severe pain at injection site). Grade 4 reactions were classified by investigator or medically qualified person. Reactions reported as adverse events in case report form within 7 days of study vaccination also included. Two-sided 95% CI was based on Clopper and Pearson method.

Local reactions were collected in e-diary or during unscheduled clinical assessments from Day 1 to Day 7 after Dose 1. Redness and swelling were measured and recorded in mdu where, 1 mdu =0.5 cm and were graded as mild \>2.0 to 5.0 cm), moderate (\>5.0 to 10.0), severe \>10.0 cm) and Grade 4 (necrosis \[redness and swelling\] or exfoliative dermatitis \[redness\]). Pain at injection site was graded as mild (did not interfere with activity), moderate (interfered with activity), severe (prevented daily activity) and Grade 4 ER visit or hospitalization for severe pain at injection site). Grade 4 reactions were classified by investigator or medically qualified person. Reactions reported as adverse events in case report form within 7 days of study vaccination also included. Two-sided 95% CI was based on Clopper and Pearson method.

Local reactions were collected in e-diary or during unscheduled clinical assessments from Day 1 to Day 7 after Dose 2. Redness and swelling were measured and recorded in mdu where, 1 mdu =0.5 cm and were graded as mild (\>=0.5 to 2.0 cm), moderate (\>2.0 to 7.0 cm), severe (\>7.0 cm) and Grade 4 (necrosis \[redness and swelling\] or exfoliative dermatitis \[redness\]). Pain at injection site was graded as mild (did not interfere with activity), moderate (interfered with activity), severe (prevented daily activity) and Grade 4 ER visit or hospitalization for severe pain at injection site). Grade 4 reactions were classified by investigator or medically qualified person. Reactions reported as adverse events in case report form within 7 days of study vaccination also included. Two-sided 95% CI was based on Clopper and Pearson method.

Local reactions were collected in e-diary or during unscheduled clinical assessments from Day 1 to Day 7 after Dose 2. Redness and swelling were measured and recorded in mdu where, 1 mdu =0.5 cm and were graded as mild \>2.0 to 5.0 cm),moderate (\>5.0 to 10.0), severe \>10.0 cm) and Grade 4 (necrosis \[redness and swelling\] or exfoliative dermatitis \[redness\]). Pain at injection site was graded as mild (did not interfere with activity), moderate (interfered with activity), severe (prevented daily activity) and Grade 4 ER visit or hospitalization for severe pain at injection site). Grade 4 were classified by investigator or medically qualified person. Reactions reported as adverse events in case report form within 7 days of study vaccination also included. Two-sided 95% CI was based on Clopper and Pearson method.

Local reactions were collected in e-diary or during unscheduled clinical assessments from Day 1 to Day 7 after Dose 3. Redness and swelling were measured and recorded in mdu where, 1 mdu =0.5 cm and were graded as mild (\>=0.5 to 2.0 cm), moderate (\>2.0 to 7.0 cm), severe (\>7.0 cm) and Grade 4 (necrosis \[redness and swelling\] or exfoliative dermatitis \[redness\]). Pain at injection site was graded as mild (did not interfere with activity), moderate (interfered with activity), severe (prevented daily activity) and Grade 4 ER visit or hospitalization for severe pain at injection site). Grade 4 reactions were classified by investigator or medically qualified person. Reactions reported as adverse events in case report form within 7 days of study vaccination also included. Two-sided 95% CI was based on Clopper and Pearson method.

Local reactions were collected in e-diary or during unscheduled clinical assessments from Day 1 to Day 7 after Dose 3. Redness and swelling were measured and recorded in mdu where, 1 mdu =0.5 cm and were graded as mild \>2.0 to 5.0 cm), moderate (\>5.0 to 10.0), severe \>10.0 cm) and Grade 4 (necrosis \[redness and swelling\] or exfoliative dermatitis \[redness\]). Pain at injection site was graded as mild (did not interfere with activity), moderate (interfered with activity), severe (prevented daily activity) and Grade 4 ER visit or hospitalization for severe pain at injection site). Grade 4 were classified by investigator or medically qualified person. Reactions reported as adverse events in case report form within 7 days of study vaccination also included. Two-sided 95% CI was based on Clopper and Pearson method.

Systemic events were recorded in an e-diary and at unscheduled clinical assessments from up to Day 7 after Dose 1. Fever: oral temperature \>= 38.0 C; categorized as \>=38.0 deg C, 38.0 to 38.4 deg C, \>38.4 to 38.9 deg C, \>38.9 to 40.0 deg C and \>40.0 deg C. Fatigue, headache, chills, new or worsened muscle pain \& new or worsened joint pain: mild (did not interfere with activity), moderate (some interference with activity), severe (prevented daily routine activity). Vomiting: mild:1-2 times in 24 hours, moderate: \>2 times in 24 hours; severe: required intravenous hydration. Diarrhea: mild: 2-3 loose stools in 24 hours, moderate: 4-5 loose stools in 24 hours, severe: 6 or more loose stools in 24 hours. Grade 4 for all events: except fever; ER visit/hospitalization and were classified by investigator or medically qualified person. Events reported as AEs in CRF within 7 days after vaccination were included. Exact 95% CI based on Clopper and Pearson method.

Systemic events were recorded in an e-diary and at unscheduled clinical assessments from up to Day 7 after Dose 1. Fever: oral temperature \>= 38.0 C; categorized as \>=38.0 deg C, 38.0 to 38.4 deg C, \>38.4 to 38.9 deg C, \>38.9 to 40.0 deg C and \>40.0 deg C. Fatigue, headache, chills, new or worsened muscle pain \& new or worsened joint pain: mild (did not interfere with activity), moderate (some interference with activity), severe (prevented daily routine activity). Vomiting: mild:1-2 times in 24 hours, moderate: \>2 times in 24 hours; severe: required intravenous hydration. Diarrhea: mild: 2-3 loose stools in 24 hours, moderate: 4-5 loose stools in 24 hours, severe: 6 or more loose stools in 24 hours. Grade 4 for all events: except fever; ER visit/hospitalization and were classified by investigator or medically qualified person. Events reported as AEs in CRF within 7 days after vaccination were included. Exact 95% CI based on Clopper and Pearson method.

Systemic events were recorded in an e-diary and at unscheduled clinical assessments from up to Day 7 after Dose 2. Fever: oral temperature \>= 38.0 C; categorized as \>=38.0 deg C, 38.0 to 38.4 deg C, \>38.4 to 38.9 deg C, \>38.9 to 40.0 deg C and \>40.0 deg C. Fatigue, headache, chills, new or worsened muscle pain \& new or worsened joint pain: mild (did not interfere with activity), moderate (some interference with activity), severe (prevented daily routine activity). Vomiting: mild:1-2 times in 24 hours, moderate: \>2 times in 24 hours; severe: required intravenous hydration. Diarrhea: mild: 2-3 loose stools in 24 hours, moderate: 4-5 loose stools in 24 hours, severe: 6 or more loose stools in 24 hours. Grade 4 for all events: except fever; ER visit/hospitalization and were classified by investigator or medically qualified person. Events reported as AEs in CRF within 7 days after vaccination were included. Exact 95% CI based on Clopper and Pearson method.

Systemic events were recorded in an e-diary and at unscheduled clinical assessments from up to Day 7 after Dose 2. Fever: oral temperature \>= 38.0 C; categorized as \>=38.0 deg C, 38.0 to 38.4 deg C, \>38.4 to 38.9 deg C, \>38.9 to 40.0 deg C and \>40.0 deg C. Fatigue, headache, chills, new or worsened muscle pain \& new or worsened joint pain: mild (did not interfere with activity), moderate (some interference with activity), severe (prevented daily routine activity). Vomiting: mild:1-2 times in 24 hours, moderate: \>2 times in 24 hours; severe: required intravenous hydration. Diarrhea: mild: 2-3 loose stools in 24 hours, moderate: 4-5 loose stools in 24 hours, severe: 6 or more loose stools in 24 hours. Grade 4 for all events: except fever; ER visit/hospitalization and were classified by investigator or medically qualified person. Events reported as AEs in CRF within 7 days after vaccination were included. Exact 95% CI based on Clopper and Pearson method.

Systemic events were recorded in an e-diary and at unscheduled clinical assessments from up to Day 7 after Dose 3. Fever: oral temperature \>= 38.0 C; categorized as \>=38.0 deg C, 38.0 to 38.4 deg C, \>38.4 to 38.9 deg C, \>38.9 to 40.0 deg C and \>40.0 deg C. Fatigue, headache, chills, new or worsened muscle pain \& new or worsened joint pain: mild (did not interfere with activity), moderate (some interference with activity), severe (prevented daily routine activity). Vomiting: mild:1-2 times in 24 hours, moderate: \>2 times in 24 hours; severe: required intravenous hydration. Diarrhea: mild: 2-3 loose stools in 24 hours, moderate: 4-5 loose stools in 24 hours, severe: 6 or more loose stools in 24 hours. Grade 4 for all events: except fever; ER visit/hospitalization and were classified by investigator or medically qualified person. Events reported as AEs in CRF within 7 days after vaccination were included. Exact 95% CI based on Clopper and Pearson method.

Systemic events were recorded in an e-diary and at unscheduled clinical assessments from up to Day 7 after Dose 3. Fever: oral temperature \>= 38.0 C; categorized as \>=38.0 deg C, 38.0 to 38.4 deg C, \>38.4 to 38.9 deg C, \>38.9 to 40.0 deg C and \>40.0 deg C. Fatigue, headache, chills, new or worsened muscle pain \& new or worsened joint pain: mild (did not interfere with activity), moderate (some interference with activity), severe (prevented daily routine activity). Vomiting: mild:1-2 times in 24 hours, moderate: \>2 times in 24 hours; severe: required intravenous hydration. Diarrhea: mild: 2-3 loose stools in 24 hours, moderate: 4-5 loose stools in 24 hours, severe: 6 or more loose stools in 24 hours. Grade 4 for all events: except fever; ER visit/hospitalization and were classified by investigator or medically qualified person. Events reported as AEs in CRF within 7 days after vaccination were included. Exact 95% CI based on Clopper and Pearson method.

An AE was defined as any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. Percentage of participants reporting AEs from dose 1 to 1 month after dose 2 were reported in this outcome measure. Exact 2-sided CI based on the Clopper and Pearson method. Only AEs collected by non-systematic assessment (i.e. excluding local reactions and systemic events) were reported in this outcome measure.

An AE was defined as any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. Percentage of participants reporting AEs from dose 1 to 1 month after dose 2 were reported in this outcome measure. Exact 2-sided CI based on the Clopper and Pearson method. Only AEs collected by non-systematic assessment (i.e. excluding local reactions and systemic events) were reported in this outcome measure.

An AE was defined as any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. Percentage of participants reporting AEs from dose 3 to 1 month after dose 3 were reported in this outcome measure. Exact 2-sided CI based on the Clopper and Pearson method. Only AEs collected by non-systematic assessment (i.e. excluding local reactions and systemic events) were reported in this outcome measure.

An AE was defined as any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. Percentage of participants reporting AEs after dose 3 to 1 month from dose 3 were reported in this outcome measure. Exact 2-sided CI based on the Clopper and Pearson method. Only AEs collected by non-systematic assessment (i.e. excluding local reactions and systemic events) were reported in this outcome measure.

An SAE was defined as any untoward medical occurrence that at any dose resulted in death, was life-threatening; resulted in persistent disability/incapacity; constituted a congenital anomaly/birth defect; was an important medical event; required inpatient hospitalization or prolongation of existing hospitalization, was a suspected transmission via a Pfizer product of an infectious agent, pathogenic or non-pathogenic. Exact 2-sided 95% CI was based on the Clopper and Pearson method.

An SAE was defined as any untoward medical occurrence that at any dose resulted in death, was life-threatening; resulted in persistent disability/incapacity; constituted a congenital anomaly/birth defect; was an important medical event; required inpatient hospitalization or prolongation of existing hospitalization, was a suspected transmission via a Pfizer product of an infectious agent, pathogenic or non-pathogenic. Exact 2-sided 95% CI was based on the Clopper and Pearson method.

An SAE was defined as any untoward medical occurrence that at any dose resulted in death, was life-threatening; resulted in persistent disability/incapacity; constituted a congenital anomaly/birth defect; was important medical event; required inpatient hospitalization or prolongation of existing hospitalization, was a suspected transmission via a Pfizer product of an infectious agent, pathogenic or non-pathogenic. Exact 2-sided 95% CI was based on the Clopper and Pearson method.

An SAE was defined as any untoward medical occurrence that at any dose resulted in death, was life-threatening; resulted in persistent disability/incapacity; constituted a congenital anomaly/birth defect; was important medical event; required inpatient hospitalization or prolongation of existing hospitalization, was a suspected transmission via a Pfizer product of an infectious agent, pathogenic or non-pathogenic. Exact 2-sided 95% CI was based on the Clopper and Pearson method.

Local reactions were collected in e-diary or during unscheduled clinical assessments from Day 1 to Day 7 after Dose 1. Redness and swelling were measured and recorded in mdu where, 1 mdu =0.5 cm and were graded as mild (\>=0.5 to 2.0 cm), moderate (\>2.0 to 7.0 cm), severe (\>7.0 cm) and Grade 4 (necrosis \[redness and swelling\] or exfoliative dermatitis \[redness\]). Pain at injection site was graded as mild (did not interfere with activity), moderate (interfered with activity), severe (prevented daily activity) and Grade 4 ER visit or hospitalization for severe pain at injection site). Grade 4 reactions were classified by investigator or medically qualified person. Reactions reported as adverse events in case report form within 7 days of study vaccination also included. Two-sided 95% CI was based on Clopper and Pearson method.

Local reactions were collected in e-diary or during unscheduled clinical assessments from Day 1 to Day 7 after Dose 2. Redness and swelling were measured and recorded in mdu where, 1 mdu =0.5 cm and were graded as mild (\>=0.5 to 2.0 cm), moderate (\>2.0 to 7.0 cm), severe (\>7.0 cm) and Grade 4 (necrosis \[redness and swelling\] or exfoliative dermatitis \[redness\]). Pain at injection site was graded as mild (did not interfere with activity),moderate (interfered with activity),severe (prevented daily activity) and Grade 4 ER visit or hospitalization for severe pain at injection site). Grade 4 reactions were classified by investigator or medically qualified person. Reactions reported as adverse events in case report form within 7 days of study vaccination also included. Two-sided 95% CI was based on Clopper and Pearson method.

Local reactions were collected in e-diary or during unscheduled clinical assessments from Day 1 to Day 7 after Dose 3. Redness and swelling were measured and recorded in mdu where, 1 mdu =0.5 cm and were graded as mild(\>=0.5 to 2.0 cm),moderate (\>2.0 to 7.0 cm),severe (\>7.0 cm) and Grade 4 (necrosis \[redness and swelling\] or exfoliative dermatitis \[redness\]). Pain at injection site was graded as mild (did not interfere with activity),moderate (interfered with activity), severe (prevented daily activity) and Grade 4 ER visit or hospitalization for severe pain at injection site).Grade 4 were classified by investigator or medically qualified person. Reactions reported as adverse events in case report form within 7 days of study vaccination also included. Two-sided 95% CI was based on Clopper and Pearson method.

Systemic events were recorded in an e-diary and at unscheduled clinical assessments up to Day 7 after Dose 1. Fever: oral temperature \>= 38.0 C; categorized as \>=38.0 deg C, 38.0 to 38.4 deg C, \>38.4 to 38.9 deg C, \>38.9 to 40.0 deg C and \>40.0 deg C. Fatigue, headache, chills, new or worsened muscle pain \& new or worsened joint pain: mild (did not interfere with activity), moderate (some interference with activity), severe(prevented daily routine activity). Vomiting: mild:1-2 times in 24 hours, moderate: \>2 times in 24 hours; severe: required intravenous hydration. Diarrhea: mild: 2-3 loose stools in 24 hours, moderate: 4-5 loose stools in 24 hours, severe: 6 or more loose stools in 24 hours. Grade 4 for all events: except fever; ER visit/hospitalization and were classified by investigator or medically qualified person. Events reported as AEs in CRF within 7 days after vaccination were included. Exact 95% CI based on Clopper and Pearson method.

Systemic events were recorded in an e-diary and at unscheduled clinical assessments up to Day 7 after Dose 2. Fever: oral temperature \>= 38.0 deg C; categorized as \>=38.0 to 38.4 deg C, \>38.4 to 38.9 deg C,\>38.9 to 40.0 deg C and \>40.0 deg C. Fatigue, headache, chills, new or worsened muscle pain \& new or worsened joint pain: mild (did not interfere with activity), moderate (some interference with activity), severe (prevented daily routine activity). Vomiting: mild:1-2 times in 24 hours, moderate: \>2 times in 24 hours; severe: required intravenous hydration. Diarrhea: mild: 2-3 loose stools in 24 hours, moderate: 4-5 loose stools in 24 hours, severe: 6 or more loose stools in 24 hours. Grade 4 for all events: except fever; ER visit/hospitalization and were classified by investigator or medically qualified person. Events reported as AEs in CRF within 7 days after vaccination were included. Exact 95% CI based on Clopper and Pearson method.

Systemic events were recorded in an e-diary and at unscheduled clinical assessments up to Day 7 after Dose 3. Fever: oral temperature \>= 38.0 deg C; categorized as \>=38.0 to 38.4 deg C, \>38.4 to 38.9 deg C,\>38.9 to 40.0 deg C and \>40.0 deg C. Fatigue, headache, chills, new or worsened muscle pain \& new or worsened joint pain: mild (did not interfere with activity), moderate (some interference with activity), severe (prevented daily routine activity). Vomiting: mild:1-2 times in 24 hours, moderate: \>2 times in 24 hours; severe: required intravenous hydration. Diarrhea: mild: 2-3 loose stools in 24 hours, moderate: 4-5 loose stools in 24 hours, severe: 6 or more loose stools in 24 hours. Grade 4 for all events: except fever; ER visit/hospitalization and were classified by investigator or medically qualified person. Events reported as AEs in CRF within 7 days after vaccination were included. Exact 95% CI based on Clopper and Pearson method.

Local reactions were collected in e-diary or during unscheduled clinical assessments from Day 1 to Day 7 after Dose 1.Redness and swelling were measured and recorded in mdu where, 1 mdu =0.5 cm and were graded as mild (\>=0.5 to 2.0 cm), moderate (\>2.0 to 7.0 cm), severe (\>7.0 cm) and Grade 4 (necrosis\[redness and swelling\] or exfoliative dermatitis \[redness\]). Pain at injection site was graded as mild (did not interfere with activity), moderate (interfered with activity),severe (prevented daily activity) and Grade 4 ER visit or hospitalization. Grade 4 reactions were classified by investigator or medically qualified person. Reactions reported as adverse events in case report form within 7 days of study vaccination also included. Two-sided 95% CI was based on Clopper and Pearson method.

Local reactions were collected in e-diary or during unscheduled clinical assessments from Day 1 to Day 7 after Dose 2. Redness and swelling were measured and recorded in mdu where, 1 mdu =0.5 cm and were graded as mild (\>=0.5 to 2.0 cm), moderate (\>2.0 to 7.0 cm), severe (\>7.0 cm) and Grade 4 (necrosis \[redness and swelling\] or exfoliative dermatitis \[redness\]). Pain at injection site was graded as mild (did not interfere with activity), moderate (interfered with activity), severe (prevented daily activity) and Grade 4 ER visit or hospitalization. Grade 4 reactions were classified by investigator or medically qualified person. Reactions reported as adverse events in case report form within 7 days of study vaccination also included. Two-sided 95% CI was based on Clopper and Pearson method.

Local reactions were collected in e-diary or during unscheduled clinical assessments from Day 1 to Day 7 after Dose 3. Redness and swelling were measured and recorded in mdu where, 1 mdu =0.5 cm and were graded as mild (\>=0.5 to 2.0 cm), moderate (\>2.0 to 7.0 cm), severe (\>7.0 cm) and Grade 4 (necrosis \[redness and swelling\] or exfoliative dermatitis \[redness\]). Pain at injection site was graded as mild (did not interfere with activity), moderate (interfered with activity), severe (prevented daily activity) and Grade 4 ER visit or hospitalization. Grade 4 reactions were classified by investigator or medically qualified person. Reactions reported as adverse events in case report form within 7 days of study vaccination also included. Two-sided 95% CI was based on Clopper and Pearson method

Systemic events were recorded in an e-diary and at unscheduled clinical assessments from Day 1 to Day 7 after Dose 1. Fever: oral temperature \>= 38.0 deg C; categorized as \>=38.0 to 38.4 deg C, \>38.4 to 38.9 deg C,\>38.9 to 40.0 deg C and \>40.0 deg C. Fatigue, headache, chills, new or worsened muscle pain \& new or worsened joint pain: mild (did not interfere with activity), moderate (some interference with activity), severe (prevented daily routine activity). Vomiting: mild:1-2 times in 24 hours, moderate: \>2 times in 24 hours; severe: required intravenous hydration. Diarrhea: mild: 2-3 loose stools in 24 hours, moderate: 4-5 loose stools in 24 hours, severe: 6 or more loose stools in 24 hours. Grade 4 for all events: except fever; ER visit/hospitalization and were classified by investigator or medically qualified person. Events reported as AEs in CRF within 7 days after vaccination were included. Exact 95% CI based on Clopper and Pearson method.

Systemic events were recorded in an e-diary and at unscheduled clinical assessments from Day 1 to Day 7 after Dose 2. Fever: oral temperature \>= 38.0 C; categorized as \>=38.0 deg C, 38.0 to 38.4 deg C, \>38.4 to 38.9 deg C, \>38.9 to 40.0 deg C and \>40.0 deg C. Fatigue, headache, chills, new or worsened muscle pain \& new or worsened joint pain: mild (did not interfere with activity), moderate (some interference with activity), severe (prevented daily routine activity). Vomiting: mild:1-2 times in 24 hours, moderate: \>2 times in 24 hours; severe: required intravenous hydration. Diarrhea: mild: 2-3 loose stools in 24 hours, moderate: 4-5 loose stools in 24 hours, severe: 6 or more loose stools in 24 hours. Grade 4 for all events: except fever; ER visit/hospitalization and were classified by investigator or medically qualified person. Events reported as AEs in CRF within 7 days after vaccination were included. Exact 95% CI based on Clopper and Pearson method.

Systemic events were recorded in an e-diary and at unscheduled clinical assessments from Day 1 to Day 7 after Dose 3. Fever: oral temperature \>= 38.0 C; categorized as \>=38.0 deg C, 38.0 to 38.4 deg C, \>38.4 to 38.9 deg C, \>38.9 to 40.0 deg C and \>40.0 deg C. Fatigue, headache, chills, new or worsened muscle pain \& new or worsened joint pain: mild (did not interfere with activity), moderate (some interference with activity), severe (prevented daily routine activity). Vomiting: mild:1-2 times in 24 hours, moderate: \>2 times in 24 hours; severe: required intravenous hydration. Diarrhea: mild: 2-3 loose stools in 24 hours, moderate: 4-5 loose stools in 24 hours, severe: 6 or more loose stools in 24 hours. Grade 4 for all events: except fever; ER visit/hospitalization and were classified by investigator or medically qualified person. Events reported as AEs in CRF within 7 days after vaccination were included. Exact 95% CI based on Clopper and Pearson method.

Local reactions were collected in e-diary or during unscheduled clinical assessments from Day 1 to Day 7 after Dose 1. Redness and swelling were measured and recorded in mdu where,1 mdu =0.5 cm and were graded as mild (\>=0.5 to 2.0 cm), moderate (\>2.0 to 7.0 cm), severe (\>7.0 cm) and Grade 4 (necrosis \[redness and swelling\] or exfoliative dermatitis \[redness\]). Tenderness at injection site was graded as mild (hurts if gently touched), moderate (hurts if gently touched with crying), severe (causes limitation of limb movement) and Grade 4 (ER visit or hospitalization).Grade 4 were classified by investigator or medically qualified person. Reactions reported as adverse events in case report form within 7 days of study vaccination were also included. Two-sided 95% CI was based on Clopper and Pearson method.

Local reactions were collected in e-diary or during unscheduled clinical assessments from Day 1 to Day 7 after Dose 2. Redness and swelling were measured and recorded in mdu where,1 mdu =0.5 cm and were graded as mild (\>=0.5 to 2.0 cm), moderate (\>2.0 to 7.0 cm), severe (\>7.0 cm) and Grade 4 (necrosis \[redness and swelling\] or exfoliative dermatitis \[redness\]). Tenderness at injection site was graded as mild (hurts if gently touched), moderate(hurts if gently touched with crying), severe (causes limitation of limb movement) and Grade 4 (ER visit or hospitalization).Grade 4 were classified by investigator or medically qualified person. Reactions reported as adverse events in case report form within 7 days of study vaccination were also included. Two-sided 95% CI was based on Clopper and Pearson method.

Local reactions were collected in e-diary or during unscheduled clinical assessments from Day 1 to Day 7 after Dose 3. Redness and swelling were measured and recorded in mdu where,1 mdu =0.5 cm and were graded as mild (\>=0.5 to 2.0 cm), moderate (\>2.0 to 7.0 cm), severe (\>7.0 cm) and Grade 4 (necrosis \[redness and swelling\] or exfoliative dermatitis \[redness\]). Tenderness at injection site was graded as mild (hurts if gently touched), moderate (hurts if gently touched with crying), severe (causes limitation of limb movement) and Grade 4 (ER visit or hospitalization).Grade 4 were classified by investigator or medically qualified person. Reactions reported as adverse events in case report form within 7 days of study vaccination were also included. Two-sided 95% CI was based on Clopper and Pearson method.

Systemic events recorded in an e-diary \& at unscheduled clinical assessments up to Day 7 after Dose 1. Fever: oral temperature \>= 38.0 deg C; categorised as \>=38.0 to 38.4 deg C,\>38.4 to 38.9 deg C, \>38.9 to 40.0 deg C and \>40.0 deg C. Decreased appetite: mild (decreased interest in eating),moderate (decreased oral intake),severe(refusal to feed). Drowsiness: mild (increased or prolonged sleeping bouts), moderate (slightly subdued interfering with daily activity), severe (disabling; not interested in usual daily activity). Irritability: mild (easily consolable), moderate (requiring increased attention), severe (Inconsolable; crying cannot be comforted). Grade 4 for all events: ER visit or hospitalization and were classified by investigator or medically qualified person. Events reported as AEs in CRF within 7 days after vaccination were also included. Exact 95% CI based on Clopper and Pearson method.

Systemic events recorded in an e-diary \& at unscheduled clinical assessments up to Day 7 after Dose 2. Fever: oral temperature \>= 38.0 deg C; categorised as \>=38.0 to 38.4 deg C,\>38.4 to 38.9 deg C, \>38.9 to 40.0 deg C and \>40.0 deg C. Decreased appetite: mild (decreased interest in eating), moderate (decreased oral intake), severe (refusal to feed). Drowsiness: mild (increased or prolonged sleeping bouts), moderate (slightly subdued interfering with daily activity), severe (disabling; not interested in usual daily activity). Irritability: mild (easily consolable), moderate (requiring increased attention), severe (Inconsolable; crying cannot be comforted). Grade 4 for all events: ER visit or hospitalization and were classified by investigator or medically qualified person. Events reported as AEs in CRF within 7 days after vaccination were also included. Exact 95% CI based on Clopper and Pearson method.

Systemic events recorded in an e-diary and at unscheduled clinical assessments up to Day 7 after Dose 3. Fever: oral temperature \>= 38.0 deg C; categorised as \>=38.0 to 38.4 deg C,\>38.4 to 38.9 deg C, \>38.9 to 40.0 deg C and \>40.0 deg C. Decreased appetite: mild (decreased interest in eating), moderate (decreased oral intake), severe (refusal to feed). Drowsiness: mild (increased or prolonged sleeping bouts), moderate (slightly subdued interfering with daily activity), severe(disabling; not interested in usual daily activity). Irritability: mild (easily consolable), moderate (requiring increased attention), severe (Inconsolable; crying cannot be comforted). Grade 4 for all events: ER visit or hospitalization and were classified by investigator or medically qualified person. Events reported as AEs in CRF within 7 days after vaccination were also included. Exact 95% CI based on Clopper and Pearson method.

An AE was defined as any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. Percentage of participants reporting AEs from dose 1 to 1 month after dose 2 were reported in this outcome measure. Exact 2-sided CI based on the Clopper and Pearson method. Only AEs collected by non-systematic assessment (i.e. excluding local reactions and systemic events) were reported in this outcome measure.

An AE was defined as any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. Percentage of participants reporting AEs from dose 3 to 1 month after dose 3 were reported in this outcome measure. Exact 2-sided CI based on the Clopper and Pearson method. Only AEs collected by non-systematic assessment (i.e. excluding local reactions and systemic events) were reported in this outcome measure.

An SAE was defined as any untoward medical occurrence that at any dose resulted in death, was life-threatening; resulted in persistent disability/incapacity; constituted a congenital anomaly/birth defect; was an important medical event; required inpatient hospitalization or prolongation of existing hospitalization, was a suspected transmission via a Pfizer product of an infectious agent, pathogenic or non-pathogenic. Exact 2-sided 95% CI was based on the Clopper and Pearson method.

An SAE was defined as any untoward medical occurrence that at any dose resulted in death, was life-threatening; resulted in persistent disability/incapacity; constituted a congenital anomaly/birth defect; was an important medical event; required inpatient hospitalization or prolongation of existing hospitalization, was a suspected transmission via a Pfizer product of an infectious agent, pathogenic or non-pathogenic. Exact 2-sided 95% CI was based on the Clopper and Pearson method.

An AE was defined as any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. Percentage of participants reporting AEs after dose 1 to 1 month from dose 2 were reported in this outcome measure. Exact 2-sided CI based on the Clopper and Pearson method. Only AEs collected by non-systematic assessment (i.e. excluding local reactions and systemic events) were reported in this outcome measure.

An AE was defined as any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. Percentage of participants reporting AEs from dose 3 to 1 month after dose 3 were reported in this outcome measure. Exact 2-sided CI based on the Clopper and Pearson method. Only AEs collected by non-systematic assessment (i.e. excluding local reactions and systemic events) were reported in this outcome measure.

An SAE was defined as any untoward medical occurrence that at any dose resulted in death, was life-threatening; resulted in persistent disability/incapacity; constituted a congenital anomaly/birth defect; was an important medical event; required inpatient hospitalization or prolongation of existing hospitalization, was a suspected transmission via a Pfizer product of an infectious agent, pathogenic or non-pathogenic. Exact 2-sided 95% CI was based on the Clopper and Pearson method.

An SAE was defined as any untoward medical occurrence that at any dose resulted in death, was life-threatening; resulted in persistent disability/incapacity; constituted a congenital anomaly/birth defect; was an important medical event; required inpatient hospitalization or prolongation of existing hospitalization, was a suspected transmission via a Pfizer product of an infectious agent, pathogenic or non-pathogenic. Exact 2-sided 95% CI was based on the Clopper and Pearson method.

An AE was defined as any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. Percentage of participants reporting AEs from dose 1 to 1 month after dose 2 were reported in this outcome measure. Exact 2-sided CI based on the Clopper and Pearson method. Only AEs collected by non-systematic assessment (i.e. excluding local reactions and systemic events) were reported in this outcome measure.

An AE was defined as any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. Percentage of participants reporting AEs from dose 3 to 1 month after dose 3 were reported in this outcome measure. Exact 2-sided CI based on the Clopper and Pearson method. Only AEs collected by non-systematic assessment (i.e. excluding local reactions and systemic events) were reported in this outcome measure.

An SAE was defined as any untoward medical occurrence that at any dose resulted in death, was life-threatening; resulted in persistent disability/incapacity; constituted a congenital anomaly/birth defect; was important medical event; required inpatient hospitalization or prolongation of existing hospitalization, was a suspected transmission via a Pfizer product of an infectious agent, pathogenic or non-pathogenic. Exact 2-sided 95% CI was based on the Clopper and Pearson method.

An SAE was defined as any untoward medical occurrence that at any dose resulted in death, was life-threatening; resulted in persistent disability/incapacity; constituted a congenital anomaly/birth defect; was important medical event; required inpatient hospitalization or prolongation of existing hospitalization, was a suspected transmission via a Pfizer product of an infectious agent, pathogenic or non-pathogenic. Exact 2-sided 95% CI was based on the Clopper and Pearson method.

GMRs and the corresponding 2-sided CIs were calculated by exponentiating the mean difference of the logarithm of the titers and the corresponding CIs (based on student t distribution). GMTs and 2-sided 95% CIs were calculated by exponentiating the mean logarithm of the titers and the corresponding CIs (based on the Student t distribution). Assay results below the lower limit of quantitation (LLOQ) were set to 0.5\*LLOQ. Results include those from a comparator group of C4591001 (NCT04368728) Phase 2/3 participants of the age 16 to 25 years who received 2 doses of original BNT162b2 30 mcg who had no serological or virological evidence of past SARS-CoV-2 infection and had no medical history of COVID-19 were also included. GMT is reported in descriptive analysis section and GMR is reported under statistical analysis.

Seroresponse is defined as achieving a \>=4 fold rise from baseline (before Dose 1). Assay result below a postvaccination \>=4\*LLOQ is considered a seroresponse. Results include those from a comparator group of C4591001 (NCT04368728) Phase 2/3 participants who had no serological or virological evidence (prior to the 1-month post-Dose 2 blood sample collection) of past SARS-CoV-2 infection were included for this analysis. Percentage of participants with seroresponse is reported in descriptive analysis section and the difference in percentage of participants is reported under statistical analysis. Evaluable immunogenicity population included all eligible randomized participants who received the study intervention to which they were randomized, had a valid and determinate immunogenicity result within 28-42 days after the study vaccination, and had no other important protocol deviations as determined by the clinician.

GMRs \& corresponding 2-sided CIs were calculated by exponentiating mean difference of logarithm of titers \& corresponding CIs(based on student t distribution).GMTs \& 2-sided 95% CIs were calculated by exponentiating mean logarithm of titers and corresponding CIs(based on the Student t distribution).Assay results below LLOQ were set to 0.5\*LLOQ.Results include those from comparator group of C4591001(NCT04368728) Phase2/3 participants of age 16-25 years who received 2 doses of original BNT162b2 30mcg who had no serological or virological evidence of past SARS-CoV-2 infection\& had no medical history of COVID-19 were also included.GMT is reported in descriptive analysis section \& GMR is reported under statistical analysis.EIP included all eligible randomized participants who received study intervention to which they were randomized,had a valid\&determinate immunogenicity result within 28-42 days after study vaccination,had no other important protocol deviations as determined by clinician.

Seroresponse is defined as achieving a \>=4-fold rise from baseline (before Dose 1). Assay result below a postvaccination \>=4\*LLOQ is considered a seroresponse. Results include those from a comparator group of C4591001 (NCT04368728) Phase 2/3 participants who had no serological or virological evidence (prior to the 1-month post-Dose 2 blood sample collection) of past SARS-CoV-2 infection were included for this analysis. Percentage of participants with seroresponse is reported in descriptive analysis section and the difference in percentage of participants is reported under statistical analysis. Evaluable immunogenicity population included all eligible randomized participants who received the study intervention to which they were randomized, had a valid and determinate immunogenicity result within 28-42 days after the study vaccination, and had no other important protocol deviations as determined by the clinician.

GMRs \& corresponding 2-sided CIs were calculated by exponentiating mean difference of logarithm of titers \& corresponding CIs(based on student t distribution).GMTs \& 2-sided 95% CIs were calculated by exponentiating mean logarithm of titers and corresponding CIs(based on the Student t distribution).Assay results below LLOQ were set to 0.5\*LLOQ.Results include those from comparator group of C4591001(NCT04368728) Phase2/3 participants of age 16-25 years who received 2 doses of original BNT162b2 30mcg who had no serological or virological evidence of past SARS-CoV-2 infection\& had no medical history of COVID-19 were also included.GMT is reported in descriptive analysis section \& GMR is reported under statistical analysis.EIP included all eligible randomized participants who received study intervention to which they were randomized,had a valid\&determinate immunogenicity result within 28-42 days after study vaccination,had no other important protocol deviations as determined by clinician.

Seroresponse is defined as achieving a \>=4-fold rise from baseline(before Dose 1). Assay result below a postvaccination \>=4\*LLOQ is considered a seroresponse. Results include those from a comparator group of C4591001 (NCT04368728) Phase 2/3 participants who had no serological or virological evidence (prior to the 1-month post-Dose 2 blood sample collection) of past SARS-CoV-2 infection were included for this analysis. Percentage of participants with seroresponse is reported in descriptive analysis section and the difference in percentage of participants is reported under statistical analysis. Evaluable immunogenicity population included all eligible randomized participants who received the study intervention to which they were randomized, had a valid and determinate immunogenicity result within 28-42 days after the study vaccination, and had no other important protocol deviations as determined by the clinician.

GMRs and the corresponding 2-sided CIs were calculated by exponentiating the mean difference of logarithm of the titers and the corresponding CIs(based on student t distribution).GMTs \& 2-sided 95% CIs were calculated by exponentiating the mean logarithm of the titers and the corresponding CIs (based on the Student t distribution). Assay results below LLOQ were set to 0.5\*LLOQ. Results include those from comparator group of C4591001 (NCT04368728) Phase2/3 participants of age 16-25 years who received 2 doses of original BNT162b2 30 mcg who had no serological or virological evidence of past SARS-CoV-2 infection \& had no medical history of COVID-19 were also included. GMT is reported in descriptive analysis section \& GMR is reported under statistical analysis.

Seroresponse is defined as achieving a \>=4-fold rise from baseline(before Dose 1). Assay result below a postvaccination \>=4\*LLOQ is considered a seroresponse.Results include those from a comparator group of C4591001 (NCT04368728) Phase 2/3 participants who had no serological or virological evidence (prior to the 1-month post-Dose 2 blood sample collection) of past SARS-CoV-2 infection were included for this analysis. Percentage of participants with seroresponse is reported in descriptive analysis section and the difference in percentage of participants is reported under statistical analysis. Evaluable immunogenicity population included all eligible randomized participants who received the study intervention to which they were randomized, had a valid and determinate immunogenicity result within 28-42 days after the study vaccination, and had no other important protocol deviations as determined by the clinician.

GMRs and the corresponding 2-sided CIs were calculated by exponentiating the mean difference of the logarithm of titers and the corresponding CIs (based on student t distribution). GMTs and the 2-sided 95% CIs were calculated by exponentiating the mean logarithm of the titers and the corresponding CIs (based on the Student t distribution). Assay results below LLOQ were set to 0.5\*LLOQ. Results include those from comparator group of C4591001 (NCT04368728) Phase2/3 participants of age 16-25 years who received 2 doses of original BNT162b2 30mcg who had no serological or virological evidence of past SARS-CoV-2 infection\& had no medical history of COVID-19 were also included. GMT is reported in descriptive analysis section \& GMR is reported under statistical analysis.

Seroresponse is defined as achieving a \>=4-fold rise from baseline(before Dose 1). Assay result below a postvaccination \>=4\*LLOQ is considered a seroresponse. Results include those from a comparator group of C4591001(NCT04368728)Phase 2/3 participants who had no serological or virological evidence (prior to the 1-month post-Dose 2 blood sample collection) of past SARS-CoV-2 infection were included for this analysis. Percentage of participants with seroresponse is reported in descriptive analysis section and the difference in percentage of participants is reported under statistical analysis. Evaluable immunogenicity population included all eligible randomized participants who received the study intervention to which they were randomized, had a valid and determinate immunogenicity result within 28-42 days after the study vaccination, and had no other important protocol deviations as determined by the clinician.