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Typhoid conjugate vaccine low dose

Phase 1

Salmonella Infections | Monoclonal antibody | Other |GSK plc|Last Updated: Nov 28, 2025

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedDouble-BlindPLACEBO_CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment155
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05480800A Study to Evaluate Safety, Reactogenicity, and Immune Response of GVGH iNTS-TCV Vaccine Against Invasive Nontyphoidal Salmonella and Typhoid FeverPHASE1 COMPLETED 155Sep 13, 2022Jan 7, 2025Nov 28, 20252 Belgium, Malawi
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Study Endpoints
Primary Endpoints
Stage 1: Number of Participants With Any Solicited Administration Site Events After the First Study Intervention Administration
Within 7 days post vaccination (day of administration and 6 subsequent days post-first vaccination on Day 1)

The solicited administration site events included redness (erythema), pain, and swelling. Data for solicited administration site events is presented for each intervention administered in each arm group. Any = occurrence of the event regardless of intensity grade.

Stage 1: Number of Participants With Any Solicited Administration Site Events After the Second Study Intervention Administration
Within 7 days post vaccination (day of administration and 6 subsequent days post-second vaccination on Day 57)

The solicited administration site events included redness (Erythema), pain and swelling. Data for solicited administration site events is presented for each intervention administered in each arm group. Any = occurrence of the event regardless of intensity grade.

Stage 1: Number of Participants With Any Solicited Administration Site Events After the Third Study Intervention Administration
Within 7 days post vaccination (day of administration and 6 subsequent days post-third vaccination on Day 169)

The solicited administration site events included redness (Erythema), pain and swelling. Data for solicited administration site events is presented for each intervention administered in each arm group. Any = occurrence of the event regardless of intensity grade.

Stage 1: Number of Participants With Any Solicited Systemic Events After the First Study Intervention Administration
Within 7 days post vaccination (day of administration and 6 subsequent days post-first vaccination on Day 1)

The solicited systemic events included arthralgia (joint pain), fatigue (tiredness), headache, myalgia (muscle pain) and fever (pyrexia). Fever is defined as body temperature equal to or above (\>=) 38.0 degrees Celsius (°C). The preferred location for measuring temperature is the axilla. Any = occurrence of the event regardless of intensity grade.

Stage 1: Number of Participants With Any Solicited Systemic Events After the Second Study Intervention Administration
Within 7 days post vaccination (day of administration and 6 subsequent days post-second vaccination on Day 57)

The solicited systemic events included arthralgia (joint pain), fatigue (tiredness), headache, myalgia (muscle pain) and fever (pyrexia). Fever is defined as body temperature equal to or above (≥) 38.0 degrees Celsius (°C). The preferred location for measuring temperature is the axilla. Any = occurrence of the event regardless of intensity grade.

Stage 1: Number of Participants With Any Solicited Systemic Events After the Third Study Intervention Administration
Within 7 days post vaccination (day of administration and 6 subsequent days post-third vaccination on Day 169)

The solicited systemic events included arthralgia (joint pain), fatigue (tiredness), headache, myalgia (muscle pain) and fever (pyrexia). Fever is defined as body temperature equal to or above (≥) 38.0 degrees Celsius (°C). The preferred location for measuring temperature is the axilla. Any = occurrence of the event regardless of intensity grade.

Stage 1: Number of Participants With Any Unsolicited Adverse Events (AE) After the First Study Intervention Administration
Within 28 days post vaccination (day of administration and 27 subsequent days post-first vaccination on Day 1)

An unsolicited AE is an AE reported in addition to those solicited during the clinical study. Also, any 'solicited' symptom with onset outside the specified period of follow-up for solicited symptoms is reported as an unsolicited AE. Any = occurrence of the event regardless of intensity grade.

Stage 1: Number of Participants With Any Unsolicited AEs After the Second Study Intervention Administration
Within 28 days post vaccination (day of administration and 27 subsequent days post-second vaccination on Day 57)

An unsolicited AE is an AE reported in addition to those solicited during the clinical study. Also, any 'solicited' symptom with onset outside the specified period of follow-up for solicited symptoms is reported as an unsolicited AE. Any = occurrence of the event regardless of intensity grade.

Stage 1: Number of Participants With Any Unsolicited AEs After the Third Study Intervention Administration
Within 28 days post vaccination (day of administration and 27 subsequent days post-third vaccination on Day 169)

An unsolicited AE is an AE reported in addition to those solicited during the clinical study. Also, any 'solicited' symptom with onset outside the specified period of follow-up for solicited symptoms is reported as an unsolicited AE. Any = occurrence of the event regardless of intensity grade.

Stage 1: Number of Participants With Any Serious Adverse Events (SAEs)
From first study intervention administration (Day 1) up to 28 days after the third study intervention administration (Day 197)

An SAE is defined as any untoward medical occurrence that results in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in disability/incapacity, is a congenital anomaly/birth defect in the offspring of a study participant, results in abnormal pregnancy outcomes or any other situation based on appropriate medical or scientific judgement. Any = occurrence of the event regardless of intensity grade.

Stage 1: Number of Participants With Any AEs/SAEs Leading to Withdrawal From the Study
From first study intervention administration (Day 1) up to 28 days after the third study intervention administration (Day 197)

An SAE is defined as any untoward medical occurrence that results in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in disability/incapacity, is a congenital anomaly/birth defect in the offspring of a study participant, results in abnormal pregnancy outcomes or any other situation based on appropriate medical or scientific judgement. An AE is any untoward medical occurrence (an unfavourable/unintended sign - including an abnormal laboratory finding), symptom, or disease (new or exacerbated) in a clinical study participant that is temporally associated with the study intervention. A participant is considered to have withdrawn from the study if no new study procedure has been performed or no new information has been collected for him/her since the date of withdrawal/last contact. Any = occurrence of the event regardless of intensity grade.

Stage 1: Number of Participants With Any AEs/SAEs Leading to Withholding Further Study Intervention Administration
From first study intervention administration (Day 1) up to 28 days after the third study intervention administration (Day 197)

An SAE is defined as any untoward medical occurrence that results in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in disability/incapacity, is a congenital anomaly/birth defect in the offspring of a study participant, results in abnormal pregnancy outcomes or any other situation based on appropriate medical or scientific judgement. An AE is any untoward medical occurrence (an unfavourable/unintended sign - including an abnormal laboratory finding), symptom, or disease (new or exacerbated) in a clinical study participant that is temporally associated with the study intervention. AEs/SAEs that lead to withholding of the study intervention administration were considered under this outcome measure. Any = occurrence of the event regardless of intensity grade.

Stage 1: Number of Participants With Deviations From Normal or Baseline Values of Haematological, Renal, and Hepatic Panel Test Results at Day 8
At Day 8 (7 days after the first study intervention administration) compared to Baseline (Day 1)

Assessed hepatic laboratory parameters included alanine aminotransferase \[ALT\] and aspartate aminotransferase \[AST\], and renal laboratory parameters included creatinine and urea/blood urea nitrogen. Hematological laboratory parameters included basophils, eosinophils, hemoglobin, lymphocytes, monocytes, neutrophils, platelets and white blood cells (WBCs). Categories reported when comparing Day 1 (baseline) and Day 8 hematological, renal and hepatic laboratory results are defined as follows: \<range\> (at baseline) - \<range\> (at timing) (e.g. Within (Baseline) - Within (Day 8)) where range is being classified as below, within or above the normal range. Below = value below the laboratory reference range defined for the specified visit and laboratory parameter; Within = value within the laboratory reference range defined for the specified visit and laboratory parameter; Above = value above the laboratory reference range defined for the specified visit and laboratory parameter.

Stage 1: Number of Participants With Deviations From Normal or Baseline Values of Haematological, Renal, and Hepatic Panel Test Results at Day 64
At Day 64 (7 days after the second study intervention administration) compared to Baseline (Day 57)

Assessed hepatic laboratory parameters included ALT and AST, and renal laboratory parameters included creatinine and urea/blood urea nitrogen. Hematological laboratory parameters included basophils, eosinophils, hemoglobin, lymphocytes, monocytes, neutrophils, platelets and white blood cells (WBCs). Categories reported when comparing Day 57 (baseline) and Day 64 hematological, renal and hepatic laboratory results are defined as follows: \<range\> (at baseline) - \<range\> (at timing) (e.g. Within (Baseline) - Within (Day 64)) where range is being classified as below, within or above the normal range. Below = value below the laboratory reference range defined for the specified visit and laboratory parameter; Within = value within the laboratory reference range defined for the specified visit and laboratory parameter; Above = value above the laboratory reference range defined for the specified visit and laboratory parameter.

Stage 1: Number of Participants With Deviations From Normal or Baseline Values of Haematological, Renal, and Hepatic Panel Test Results at Day 176
At Day 176 (7 days after the third study intervention administration) compared to Baseline (Day 169)

Assessed hepatic laboratory parameters included ALT and AST, and renal laboratory parameters included creatinine and urea/blood urea nitrogen. Hematological laboratory parameters included basophils, eosinophils, hemoglobin, lymphocytes, monocytes, neutrophils, platelets and white blood cells (WBCs). Categories reported when comparing Day 169 (baseline) and Day 176 hematological, renal and hepatic laboratory results are defined as follows: \<range\> (at baseline) - \<range\> (at timing) (e.g. Within (Baseline) - Within (Day 176)) where range is being classified as below, within or above the normal range. Below = value below the laboratory reference range defined for the specified visit and laboratory parameter; Within = value within the laboratory reference range defined for the specified visit and laboratory parameter; Above = value above the laboratory reference range defined for the specified visit and laboratory parameter.

Stage 1: Number of Participants With Deviations From Normal or Baseline Values of Haematological, Renal, and Hepatic Panel Test Results at Day 29
At Day 29 (28 days after the first study intervention administration) compared to Baseline (Day 1)

Assessed hepatic laboratory parameters included ALT and AST, and renal laboratory parameters included creatinine and urea/blood urea nitrogen. Hematological laboratory parameters included basophils, eosinophils, hemoglobin, lymphocytes, monocytes, neutrophils, platelets and white blood cells (WBCs). Categories reported when comparing Day 1 (baseline) and Day 29 hematological, renal and hepatic laboratory results are defined as follows: \<range\> (at baseline) - \<range\> (at timing) (e.g. Within (Baseline) - Within (Day 29)) where range is being classified as below, within or above the normal range. Below = value below the laboratory reference range defined for the specified visit and laboratory parameter; Within = value within the laboratory reference range defined for the specified visit and laboratory parameter; Above = value above the laboratory reference range defined for the specified visit and laboratory parameter.

Stage 1: Number of Participants With Deviations From Normal or Baseline Values of Haematological, Renal, and Hepatic Panel Test Results at Day 85
At Day 85 (28 days after the second study intervention administration) compared to Baseline (Day 57)

Assessed hepatic laboratory parameters included ALT and AST, and renal laboratory parameters included creatinine and urea/blood urea nitrogen. Hematological laboratory parameters included basophils, eosinophils, hemoglobin, lymphocytes, monocytes, neutrophils, platelets and white blood cells (WBCs). Categories reported when comparing Day 57 (baseline) and Day 85 hematological, renal and hepatic laboratory results are defined as follows: \<range\> (at baseline) - \<range\> (at timing) (e.g. Within (Baseline) - Within (Day 85)) where range is being classified as below, within or above the normal range. Below = value below the laboratory reference range defined for the specified visit and laboratory parameter; Within = value within the laboratory reference range defined for the specified visit and laboratory parameter; Above = value above the laboratory reference range defined for the specified visit and laboratory parameter.

Stage 1: Number of Participants With Deviations From Normal or Baseline Values of Haematological, Renal, and Hepatic Panel Test Results at Day 197
At Day 197 (28 days after the third study intervention administration) compared to Baseline (Day 169)

Assessed hepatic laboratory parameters included ALT and AST, and renal laboratory parameters included creatinine and urea/blood urea nitrogen. Hematological laboratory parameters included basophils, eosinophils, hemoglobin, lymphocytes, monocytes, neutrophils, platelets and white blood cells (WBCs). Categories reported when comparing Day 169 (baseline) and Day 197 hematological, renal and hepatic laboratory results are defined as follows: \<range\> (at baseline) - \<range\> (at timing) (e.g. Within (Baseline) - Within (Day 197)) where range is being classified as below, within or above the normal range. Below = value below the laboratory reference range defined for the specified visit and laboratory parameter; Within = value within the laboratory reference range defined for the specified visit and laboratory parameter; Above = value above the laboratory reference range defined for the specified visit and laboratory parameter.

Stage 2: Number of Participants With Any Solicited Administration Site Events After the First Study Intervention Administration
Within 7 days post vaccination (day of administration and 6 subsequent days post-first vaccination on Day 1)

The solicited administration site events included redness (Erythema), pain and swelling. Data for solicited administration site events is presented for each intervention administered in each arm group. Any = occurrence of the event regardless of intensity grade.

Stage 2: Number of Participants With Any Solicited Administration Site Events After the Second Study Intervention Administration
Within 7 days post vaccination (day of administration and 6 subsequent days post-second vaccination on Day 57)

The solicited administration site events included redness (Erythema), pain and swelling. Data for solicited administration site events is presented for each intervention administered in each arm group. Any = occurrence of the event regardless of intensity grade.

Stage 2: Number of Participants With Any Solicited Administration Site Events After the Third Study Intervention Administration
Within 7 days post vaccination (day of administration and 6 subsequent days post-third vaccination on Day 169)

The solicited administration site events included redness (Erythema), pain and swelling. Data for solicited administration site events is presented for each intervention administered in each arm group. Any = occurrence of the event regardless of intensity grade.

Stage 2: Number of Participants With Any Solicited Systemic Events After the First Study Intervention Administration
Within 7 days post vaccination (day of administration and 6 subsequent days post-first vaccination on Day 1)

The solicited systemic events included arthralgia (joint pain), fatigue (tiredness), headache, myalgia (muscle pain) and fever (pyrexia). Fever is defined as body temperature \>=38.0 degrees Celsius (°C). The preferred location for measuring temperature is the axilla. Any = occurrence of the event regardless of intensity grade.

Stage 2: Number of Participants With Solicited Systemic Events After the Second Study Intervention Administration
Within 7 days post vaccination (day of administration and 6 subsequent days post-second vaccination on Day 57)

The solicited systemic events included arthralgia (joint pain), fatigue (tiredness), headache, myalgia (muscle pain) and fever (pyrexia). Fever is defined as body temperature \>=38.0 degrees Celsius (°C). The preferred location for measuring temperature is the axilla. Any = occurrence of the event regardless of intensity grade.

Stage 2: Number of Participants With Any Solicited Systemic Events After the Third Study Intervention Administration
Within 7 days post vaccination (day of administration and 6 subsequent days post-third vaccination on Day 169)

The solicited systemic events included arthralgia (joint pain), fatigue (tiredness), headache, myalgia (muscle pain) and fever (pyrexia). Fever is defined as body temperature \>=38.0 degrees Celsius (°C). The preferred location for measuring temperature is the axilla. Any = occurrence of the event regardless of intensity grade.

Stage 2: Number of Participants With Any Unsolicited AE After the First Study Intervention Administration
Within 28 days post vaccination (day of administration and 27 subsequent days post-first vaccination on Day 1)

An unsolicited AE is an AE reported in addition to those solicited during the clinical study. Also, any 'solicited' symptom with onset outside the specified period of follow-up for solicited symptoms is reported as an unsolicited AE. Any = occurrence of the event regardless of intensity grade.

Stage 2: Number of Participants With Any Unsolicited AE After the Second Study Intervention Administration
Within 28 days post vaccination (day of administration and 27 subsequent days post-second vaccination on Day 57)

An unsolicited AE is an AE reported in addition to those solicited during the clinical study. Also, any 'solicited' symptom with onset outside the specified period of follow-up for solicited symptoms is reported as an unsolicited AE. Any = occurrence of the event regardless of intensity grade.

Stage 2: Number of Participants With Any Unsolicited AE After the Third Study Intervention Administration
Within 28 days post vaccination (day of administration and 27 subsequent days post-third vaccination on Day 169)

An unsolicited AE is an AE reported in addition to those solicited during the clinical study. Also, any 'solicited' symptom with onset outside the specified period of follow-up for solicited symptoms is reported as an unsolicited AE. Any = occurrence of the event regardless of intensity grade.

Stage 2: Number of Participants With Any SAEs
From first study intervention administration (Day 1) up to 28 days after the third study intervention administration (Day 197)

An SAE is defined as any untoward medical occurrence that results in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in disability/incapacity, is a congenital anomaly/birth defect in the offspring of a study participant, results in abnormal pregnancy outcomes or any other situation based on appropriate medical or scientific judgement. Any = occurrence of the event regardless of intensity grade.

Stage 2: Number of Participants With Any AEs/SAEs Leading to Withdrawal From the Study
From first study intervention administration (Day 1) up to 28 days after the third study intervention (Day 197)

Any AEs including SAEs that lead to withdrawal from the study are considered under this outcome measure. A participant is considered to have withdrawn from the study if no new study procedure has been performed or no new information has been collected for him/her since the date of withdrawal/last contact. Any = occurrence of the event regardless of intensity grade.

Stage 2: Number of Participants With Any AEs/SAEs Leading to Withholding Further Study Intervention Administration
From first study intervention administration (Day 1) up to 28 days after the third study intervention (Day 197)

AEs/SAEs that lead to withholding of the study intervention administration were considered under this outcome measure. Any = occurrence of the event regardless of intensity grade.

Stage 2: Number of Participants With Deviations From Normal or Baseline Values of Haematological, Renal, and Hepatic Panel Test Results at Day 8
At Day 8 (7 days after the first study intervention administration) compared to Baseline (Day 1)

Assessed hepatic laboratory parameters included ALT and AST, and renal laboratory parameters included creatinine and urea/blood urea nitrogen. Hematological laboratory parameters included basophils, eosinophils, hemoglobin, lymphocytes, monocytes, neutrophils, platelets and white blood cells (WBCs). Categories reported when comparing Day 1 (baseline) and Day 8 hematological, renal and hepatic laboratory results are defined as follows: \<range\> (at baseline) - \<range\> (at timing) (e.g. Within (Baseline) - Within (Day 8)) where range is being classified as below, within or above the normal range. Below = value below the laboratory reference range defined for the specified visit and laboratory parameter; Within = value within the laboratory reference range defined for the specified visit and laboratory parameter; Above = value above the laboratory reference range defined for the specified visit and laboratory parameter.

Stage 2: Number of Participants With Deviations From Normal or Baseline Values of Haematological, Renal, and Hepatic Panel Test Results at Day 64
At Day 64 (7 days after the second study intervention administration) compared to Baseline (Day 57)

Assessed hepatic laboratory parameters included ALT and AST, and renal laboratory parameters included creatinine and urea/blood urea nitrogen. Hematological laboratory parameters included basophils, eosinophils, hemoglobin, lymphocytes, monocytes, neutrophils, platelets and white blood cells (WBCs). Categories reported when comparing Day 57 (baseline) and Day 64 hematological, renal and hepatic laboratory results are defined as follows: \<range\> (at baseline) - \<range\> (at timing) (e.g. Within (Baseline) - Within (Day 64)) where range is being classified as below, within or above the normal range. Below = value below the laboratory reference range defined for the specified visit and laboratory parameter; Within = value within the laboratory reference range defined for the specified visit and laboratory parameter; Above = value above the laboratory reference range defined for the specified visit and laboratory parameter.

Stage 2: Number of Participants With Deviations From Normal or Baseline Values of Haematological, Renal, and Hepatic Panel Test Results at Day 176
At Day 176 (7 days after the third study intervention administration) compared to Baseline (Day 169)

Assessed hepatic laboratory parameters included ALT and AST, and renal laboratory parameters included creatinine and urea/blood urea nitrogen. Hematological laboratory parameters included basophils, eosinophils, hemoglobin, lymphocytes, monocytes, neutrophils, platelets and white blood cells (WBCs). Categories reported when comparing Day 169 (baseline) and Day 176 hematological, renal and hepatic laboratory results are defined as follows: \<range\> (at baseline) - \<range\> (at timing) (e.g. Within (Baseline) - Within (Day 176)) where range is being classified as below, within or above the normal range. Below = value below the laboratory reference range defined for the specified visit and laboratory parameter; Within = value within the laboratory reference range defined for the specified visit and laboratory parameter; Above = value above the laboratory reference range defined for the specified visit and laboratory parameter.

Stage 2: Number of Participants With Deviations From Normal or Baseline Values of Haematological, Renal, and Hepatic Panel Test Results at Day 29
At Day 29 (28 days after the first study intervention administration) compared to Baseline (Day 1)

Assessed hepatic laboratory parameters included ALT and AST, and renal laboratory parameters included creatinine and urea/blood urea nitrogen. Hematological laboratory parameters included basophils, eosinophils, hemoglobin, lymphocytes, monocytes, neutrophils, platelets and white blood cells (WBCs). Categories reported when comparing Day 1 (baseline) and Day 29 hematological, renal and hepatic laboratory results are defined as follows: \<range\> (at baseline) - \<range\> (at timing) (e.g. Within (Baseline) - Within (Day 29)) where range is being classified as below, within or above the normal range. Below = value below the laboratory reference range defined for the specified visit and laboratory parameter; Within = value within the laboratory reference range defined for the specified visit and laboratory parameter; Above = value above the laboratory reference range defined for the specified visit and laboratory parameter.

Stage 2: Number of Participants With Deviations From Normal or Baseline Values of Haematological, Renal, and Hepatic Panel Test Results at Day 85
At Day 85 (28 days after the second study intervention administration) compared to Baseline (Day 57)

Assessed hepatic laboratory parameters included ALT and AST, and renal laboratory parameters included creatinine and urea/blood urea nitrogen. Hematological laboratory parameters included basophils, eosinophils, hemoglobin, lymphocytes, monocytes, neutrophils, platelets and white blood cells (WBCs). Categories reported when comparing Day 57 (baseline) and Day 85 hematological, renal and hepatic laboratory results are defined as follows: \<range\> (at baseline) - \<range\> (at timing) (e.g. Within (Baseline) - Within (Day 85)) where range is being classified as below, within or above the normal range. Below = value below the laboratory reference range defined for the specified visit and laboratory parameter; Within = value within the laboratory reference range defined for the specified visit and laboratory parameter; Above = value above the laboratory reference range defined for the specified visit and laboratory parameter.

Stage 2: Number of Participants With Deviations From Normal or Baseline Values of Haematological, Renal, and Hepatic Panel Test Results at Day 197
At Day 197 (28 days after the third study intervention administration) compared to Baseline (Day 169)

Assessed hepatic laboratory parameters included ALT and AST, and renal laboratory parameters included creatinine and urea/blood urea nitrogen. Hematological laboratory parameters included basophils, eosinophils, hemoglobin, lymphocytes, monocytes, neutrophils, platelets and white blood cells (WBCs). Categories reported when comparing Day 169 (baseline) and Day 197 hematological, renal and hepatic laboratory results are defined as follows: \<range\> (at baseline) - \<range\> (at timing) (e.g. Within (Baseline) - Within (Day 197)) where range is being classified as below, within or above the normal range. Below = value below the laboratory reference range defined for the specified visit and laboratory parameter; Within = value within the laboratory reference range defined for the specified visit and laboratory parameter; Above = value above the laboratory reference range defined for the specified visit and laboratory parameter.

Secondary Endpoints
Stage 1 and Stage 2: Number of Participants With Any SAEs
From 28 days after the third study intervention administration (Day 197) up to study end (Day 337)
Stage 1 and Stage 2: Number of Participants With Any AEs/SAEs Leading to Withdrawal From the Study
From 28 days after the third study intervention administration (Day 197) up to study end (Day 337)
Stage 1: Geometric Mean Concentrations (GMCs) of Anti-serotype Specific Immunoglobulin G (IgG) in Participants and Between Group Ratios for Anti-Vi Antigen (Ag) Total IgG
At Days 1, 57, and 169 (before each study intervention administration) and at Days 29, 85, and 197 (28 days after each study intervention administration)
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Study Design & Arms
AllocationRANDOMIZED
MaskingTRIPLE
ModelSEQUENTIAL
PurposePREVENTION
Treatment Arms
ArmTypeDescription
Stage 1: Invasive nontyphoidal Salmonella (iNTS)-Typhoid conjugate vaccine (TCV) low dose groupEXPERIMENTALEuropean participants were randomized to receive 3 doses of iNTS-TCV low dose vaccine and 3 doses of saline solution intramuscularly, in different arms, on Day 1, Day 57 and Day 169.
Stage 1: iNTS-Generalized modules for membrane antigens (GMMA) + TCV low dose groupACTIVE_COMPARATOREuropean participants were randomized to receive 3 doses of iNTS-GMMA low dose vaccine and 3 doses of TCV low dose vaccine intramuscularly, in different arms, on Day 1, Day 57 and Day 169.
Stage 1: iNTS-TCV full dose groupEXPERIMENTALEuropean participants were randomized to receive 3 doses of iNTS-TCV full dose vaccine and 3 doses of saline solution intramuscularly, in different arms, on Day 1, Day 57 and Day 169.
Stage 1: iNTS-GMMA + TCV full dose groupACTIVE_COMPARATOREuropean participants were randomized to receive 3 doses of iNTS-GMMA full dose vaccine and 3 doses of TCV full dose vaccine intramuscularly, in different arms, on Day 1, Day 57 and Day 169.
Stage 1: Placebo groupPLACEBO_COMPARATOREuropean participants were randomized to receive 3 doses of Placebo and 3 doses of saline solution intramuscularly, in different arms, on Day 1, Day 57 and Day 169.
Stage 2: iNTS-TCV full dose groupEXPERIMENTALAfrican participants were randomized to receive 3 doses of iNTS-TCV full dose vaccine and 3 doses of saline solution intramuscularly, in different arms, on Day 1, Day 57 and Day 169.
Stage 2: iNTS-GMMA + TCV full dose groupACTIVE_COMPARATORAfrican participants were randomized to receive 3 doses of iNTS-GMMA full dose vaccine and 3 doses of TCV full dose intramuscularly, in different arms, on Day 1, Day 57 and Day 169.
Stage 2: Control groupACTIVE_COMPARATORAfrican participants were randomized to receive MENVEO as comparator and 1 dose of saline on Day 1, BOOSTRIX as comparator and 1 dose of saline on Day 57 and TYPHIM VI as comparator and 1 dose of saline on Day 169.
Interventions
NameTypeDescription
Invasive nontyphoidal Salmonella-typhoid conjugate vaccine (iNTS-TCV) low doseBIOLOGICAL3 doses of iNTS-TCV low dose vaccine administered intramuscularly at Day 1, Day 57, and Day 169 to participants in the iNTS-TCV low dose Group in Stage 1 (Europe).
Invasive nontyphoidal Salmonella-generalized modules for membrane antigens vaccine (iNTS-GMMA) low doseBIOLOGICAL3 doses of iNTS-GMMA low dose vaccine administered intramuscularly at Day 1, Day 57, and Day 169 to participants in the iNTS-GMMA and TCV low doses Group in Stage 1 (Europe).
Typhoid conjugate vaccine (TCV) low doseBIOLOGICAL3 doses of TCV low dose vaccine administered intramuscularly at Day 1, Day 57, and Day 169 to participants in the iNTS-GMMA and TCV low doses Group in Stage 1 (Europe).
Invasive nontyphoidal Salmonella-typhoid conjugate vaccine (iNTS-TCV) full doseBIOLOGICAL3 doses of iNTS-TCV full dose vaccine administered intramuscularly at Day 1, Day 57, and Day 169 to participants in the iNTS-TCV full dose Group in Stage 1 (Europe) and to participants in iNTS-TCV full dose Group in Stage 2 (Africa).
Invasive nontyphoidal Salmonella-generalized modules for membrane antigens vaccine (iNTS-GMMA) full doseBIOLOGICAL3 doses of iNTS-GMMA full dose vaccine administered intramuscularly at Day 1, Day 57, and Day 169 to participants in the iNTS-GMMA + TCV full dose Group in Stage 1 (Europe) and to participants in the iNTS-GMMA + TCV full dose Group in Stage 2 (Africa).
Typhoid conjugate vaccine (TCV) full doseBIOLOGICAL3 doses of TCV full dose vaccine administered intramuscularly at Day 1, Day 57, and Day 169 to participants in the iNTS-GMMA + TCV full dose Group in Stage 1 (Europe) and to participants in the iNTS-GMMA + TCV full dose Group in Stage 2 (Africa).
GSK's Meningococcal A, C, Y and W-135 conjugate vaccineBIOLOGICAL1 dose of GSK's Meningococcal A, C, Y and W-135 conjugate vaccine administered intramuscularly at Day 1 to participants in the Control Group in Stage 2 (Africa).
GSK's Tetanus toxoid, reduced diphtheria toxoid and acellular pertussis vaccineCOMBINATION_PRODUCT1 dose of GSK's Tetanus toxoid, reduced diphtheria toxoid and acellular pertussis vaccine administered intramuscularly at Day 57 to participants in the Control Group in Stage 2 (Africa).
Sanofi Pasteur's Typhoid Vi polysaccharide vaccineCOMBINATION_PRODUCT1 dose of Sanofi Pasteur's Typhoid Vi polysaccharide vaccine administered intramuscularly at Day 169 to participants in the Control Group in Stage 2 (Africa).
PlaceboDRUG3 doses of Placebo administered intramuscularly at Day 1, Day 57, and Day 169 to participants in the Placebo Group in Stage 1 (Europe).
SalineOTHER3 doses of saline solution administered intramuscularly at Day 1, Day 57, and Day 169 to the participants.
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Eligibility Criteria
Age Range18 Years — 50 Years
SexALL
Healthy VolunteersYes
Study Sites2

Inclusion criteria * Participants, who, in the opinion of the Investigator, can and will comply with the requirements of the protocol. * Written or witnessed/thumb printed informed consent obtained from the participant prior to performance of any study-specific procedure. * Healthy participants as ...

Countries:BelgiumMalawi
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