AE is any untoward medical occurrence in a participant or clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of a medicinal product. For marketed medicinal products, this also includes failure to produce expected benefits (i.e., lack of efficacy), abuse or misuse. SAE is any untoward medical occurrence that, at any dose results in death, is life-threatening, requires hospitalization or prolongation of existing hospitalization, results in disability/incapacity, or is a congenital anomaly/birth defect or is medically significant.

Hematology parameters included Basophils, Eosinophils, Lymphocytes, Monocytes, Total neutrophils (Total ANC), Platelet count and WBC count. Blood samples were collected on Day 1, Day 3, Day 5 and Day28/withdrawal. Assessments recorded on Day 1 were considered as Baseline. Change from Baseline was equal to Post-Dose Visit Value minus Baseline.

Hematology parameters included Hemoglobin. Blood samples were collected on Day 1, Day 3, Day 5 and Day28/withdrawal. Assessments recorded on Day 1 were considered as Baseline. Change from Baseline was equal to Post-Dose Visit Value minus Baseline.

Hematology parameters included Hematocrit. Blood samples were collected on Day 1, Day 3, Day 5 and Day28/withdrawal. Assessments recorded on Day 1 were considered as Baseline. Change from Baseline was equal to Post-Dose Visit Value minus Baseline.

Hematology parameters included Mean corpuscle hemoglobin (MCH). Blood samples were collected on Day 1, Day 3, Day 5 and Day28/withdrawal. Assessments recorded on Day 1 were considered as Baseline. Change from Baseline was equal to Post-Dose Visit Value minus Baseline.

Hematology parameters included Mean corpuscle volume (MCV). Blood samples were collected on Day 1, Day 3, Day 5 and Day28/withdrawal. Assessments recorded on Day 1 were considered as Baseline. Change from Baseline was equal to Post-Dose Visit Value minus Baseline.

Hematology parameters included RBC count and Reticulocytes count. Blood samples were collected on Day 1, Day 3, Day 5 and Day28/withdrawal. Assessments recorded on Day 1 were considered as Baseline. Change from Baseline was equal to Post-Dose Visit Value minus Baseline.

Clinical chemistry parameters included Albumin and Total protein. Blood samples were collected on Day 1, Day 3, Day 5 and Day28/withdrawal. Assessments recorded on Day 1 were considered as Baseline. Change from Baseline was equal to Post-Dose Visit Value minus Baseline.

Clinical chemistry parameters included Alkaline phosphatase, Alanine Amino Transferase, Aspartate Amino Transferase and Gamma Glutamyl Transferase. Blood samples were collected on Day 1, Day 3, Day 5 and Day28/withdrawal. Assessments recorded on Day 1 were considered as Baseline. Change from Baseline was equal to Post-Dose Visit Value minus Baseline.

Clinical chemistry parameters included Direct Bilirubin, Total Bilirubin, Creatinine and Uric acid. Blood samples were collected on Day 1, Day 3, Day 5 and Day28/withdrawal. Assessments recorded on Day 1 were considered as Baseline. Change from Baseline was equal to Post-Dose Visit Value minus Baseline.

Clinical chemistry parameters included Calcium, CO2 content/ Bicarbonate, Glucose, Potassium, Sodium and Urea/(BUN). Blood samples were collected on Day 1, Day 3, Day 5 and Day 28/withdrawal. Assessments recorded on Day 1 were considered as Baseline. Change from Baseline was equal to Post-Dose Visit Value minus Baseline.

Urinalysis parameters included urine pH. pH is calculated on a scale of 0 to 14, such that, the lower the number, more acidic the urine and higher the number, more alkaline the urine with 7 being neutral. Urinalysis was done on Day 1, Day 5 and Day 28/withdrawal. Assessments recorded on Day 1 were considered as Baseline. Change from Baseline was equal to Post-Dose Visit Value minus Baseline.

Urinalysis parameter included Urine specific gravity and was measured on Day 1, Day 5 and Day 28. Urinary specific gravity is a measure of the concentration of solutes in the urine. It measures the ratio of urine density compared with water density and provides information on the kidney's ability to concentrate urine. Assessments recorded on Day 1 were considered as Baseline. Change from Baseline was equal to Post-Dose Visit Value minus Baseline.

The dipstick test gives results in a semi-quantitative manner, and results for urinalysis parameter of urine occult blood can be read as negative, Trace, 1+, 2+, 3+ and 4+, indicating proportional concentrations in the urine sample. Assessments recorded on Day 1 were considered as Baseline.

The dipstick test gives results in a semi-quantitative manner, and results for urinalysis parameter of urine glucose can be read as negative, Trace, 1+ or 1/4 gram per deciliter (G/dL), 2+ OR 1/2 G/dL, 3+ or 1 G/dL and 4+ indicating proportional concentrations in the urine sample. Assessments recorded on Day 1 were considered as Baseline.

The dipstick test gives results in a semi-quantitative manner, and results for urinalysis parameter of urine protein can be read as negative, Trace, 1+, 2+, 3+ and 4+, indicating proportional concentrations in the urine sample. Assessments recorded on Day 1 were considered as Baseline.

Vital signs were measured in semi-supine position after 5 minutes rest and included systolic and diastolic blood pressure. Three readings of blood pressure were taken; the first reading was rejected and the second and third readings were averaged to give the measurement to be recorded. Vital signs were obtained on Baseline (Day 1), Day 3, Day 5, Day 8, Day 14 and Day 28/withdrawal. Assessments recorded on Day 1 were considered as Baseline. Change from Baseline was equal to Post-Dose Visit Value minus Baseline.

Vital signs were measured in semi-supine position after 5 minutes rest and included HR. Three readings of pulse rate were taken; the first reading was rejected and the second and third readings were averaged to give the measurement to be recorded. Vital signs were obtained on Day 1, Day 3, Day 5, Day 8, Day 14 and Day 28/withdrawal. Assessments recorded on Day 1 were considered as Baseline. Change from Baseline was equal to Post-Dose Visit Value minus Baseline.

Vital signs were measured in semi-supine position after 5 minutes rest and included RR. RR was obtained on Day 1, Day 3, Day 5, Day 8, Day 14 and Day 28/withdrawal. Assessments recorded on Day 1 were considered as Baseline. Change from Baseline was equal to Post-Dose Visit Value minus Baseline.

Vital signs were measured in semi-supine position after 5 minutes rest and included temperature. Oral temperature was obtained on Day 1, Day 3, Day 5, Day 8, Day 14 and Day 28/withdrawal. Assessments recorded on Day 1 were considered as Baseline. Change from Baseline was equal to Post-Dose Visit Value minus Baseline.

Vital signs were measured in semi-supine position after 5 minutes rest and included POB. POB was obtained on Baseline (Day 1), Day 3, Day 5, Day 8, Day 14 and Day 28/withdrawal. Assessments recorded on Day 1 were considered as Baseline. Change from Baseline was equal to Post-Dose Visit Value minus Baseline.

12-lead ECGs were obtained on Day 1, Day 3 and Day28/withdrawal using an ECG machine that automatically calculates and measures RR, PR, QRS, QT, and Corrected QT Interval using Bazette's formula (QTcB) and Corrected QT Interval using Fridericia forumula (QTcF) intervals. Assessments recorded on Day 1 were considered as Baseline. Change from Baseline was equal to Post-Dose Visit Value minus Baseline.

Disease-related events of interest included Otitis media, Sinusitis, Bronchitis and Pneumonia and were captured separately from AEs and SAEs. DREs of interest were assessed and recorded by the site on all clinical visit days.

Use of antibiotics for DREs of interest was monitored. Roxithromycin was used for DRE sinusitis by one participant.