Anti-hepatitis B (Hep B) antibodies were measured by chemiluminescence detection. Seroprotection was defined as a titer ≥ 10 mIU/mL.

Antibody titers were measured by chemiluminescence detection for hepatitis B (Hep B), by Farr type radioimmunoassay for Haemophilus influenzae type b (PRP), and by toxin neutralization test for diphtheria. Seroprotection criteria were defined as: Criteria 1: Anti-Hep B titer ≥ 10 mIU/mL; Anti-PRP titer ≥ 0.15 µg/mL; Anti-diphtheria titer ≥ 0.01 IU/mL. Criteria 2: Anti-Hep B titer ≥ 100 mIU/mL; Anti-PRP titer ≥ 1 µg/mL; Anti-diphtheria titer or ≥ 0.1 IU/mL.

Antibody titers measured by chemiluminescence detection for Hepatitis B (Hep B); Farr type radioimmunoassay for Haemophilus influenza type b (PRP); toxin neutralization for Diphtheria (D); indirect enzyme-linked immunosorbent assay (ELISA) for Tetanus (T); neutralization assay for Poliovirus types 1, 2, and 3; and ELISA for Pertussis toxoid (PT) and Filamentous hemagglutinin (FHA). Persistence and response: ≥ 10 mIU/mL for anti-Hep B, ≥ 0.15 µg/mL for anti-PRP, ≥ 0.01 IU/mL for anti-D and anti-T, ≥ 8 (1/dil) for anti-Poliovirus; and ≥ 4-fold increase from Day 0 for anti-PT and anti-FHA.

Antibody titers were measured by chemiluminescence detection for Hepatitis B (Hep B); Farr type radioimmunoassay for Haemophilus influenza type b (PRP); toxin neutralization test for Diphtheria (D); indirect enzyme-linked immunosorbent assay (ELISA) for Tetanus (T); neutralization assay for Poliovirus types 1, 2, and 3; and ELISA for Pertussis toxoid (PT) and Filamentous hemagglutinin (FHA).

Solicited Injection Site Reactions: Pain, Erythema, Swelling, and Extensive Swelling of Vaccinated Limb. Solicited Systemic Reactions: Pyrexia (Temperature), Vomiting, Crying, Somnolence, Anorexia, and Irritability. Grade 3 defined as: Pain, cries when injected limb is moved or movement of limb reduced; Erythema and Swelling, ≥ 5 cm; Extensive Swelling of Vaccinated Limb, All; Pyrexia, ≥ 39ºC; Vomiting, ≥ 6 episodes/24 hours or requiring parenteral hydration; Crying \> 3 hours; Somnolence, sleeping most of time or difficult to wake up; Anorexia, refuses ≥ 3 feeds or most feeds; Irritability, inconsolable.

Antibody titers were measured for hepatitis B (Hep B) by enhanced chemiluminescence detection, for Haemophilus influenzae type b (PRP) by Farr type radioimmunoassay, for Diphtheria (D) by toxin neutralization test, and for Tetanus (T) by enzyme-linked immunosorbent assay (ELISA). Seroprotection was defined as a titer ≥ 0.10 mIU/mL for Hep B, ≥ 0.15 µg/mL for PRP, and ≥ 0.01 IU/mL for D and T antibodies.

Antibody titers were measured for pertussis toxoid (PT) and filamentous hemagglutinin (FHA) by enzyme linked immunosorbent assay (ELISA). Seroconversion was defined as a ≥ 4 fold increase in titer from Day 0 (before dose 1) to Day 150, one month post-dose 3.

Antibody titers were measured for poliovirus types 1, 2, and 3 by Enzyme immuno assay. Seroprotection against Poliovirus Types 1, 2, and 3 was defined as a titer ≥ 8 (1/dilutions).

High fever was defined as rectal temperature equivalent to ≥ 39.6ºC.

Seroconversion was assessed by means of enzyme immunoassay (EIA) for anti-pertussis toxoid (PT) and anti-filamentous hemagglutinin (FHA) antibodies. Seroconversion was defined as ≥ 4 fold increase in antibody titers from Day 0 to 30 days after the third vaccination.

Immunogenicity was assessed by radioimmunoassay (RIA) for anti-hepatitis B (HBs) and anti-PRP antibodies, enzyme immunoassay (EIA) for anti-tetanus, serum neutralization (SN) for anti-diphtheria, and microneutralization for anti-polio type 1, 2, and 3 antibodies. Seroprotection was defined as titers ≥ 10 mIU/mL for anti-Hepatitis Bs, ≥ 0.15 μg/mL for anti-PRP, ≥ 0.01 IU/mL for anti-tetanus and anti-diphtheria, and ≥ 8 1/dil for anti-polio types 1, 2, and 3 at 30 days after the third vaccination.

Geometric mean titers to Tetanus antigen was assessed by means of enzyme immunoassay (EIA) before the first vaccination (at Day 0) and 1 month after the third vaccination (Day 150).

Geometric mean titers to the Polio Antigens were assessed by means of microneutralization assay for anti-polio types 1, 2, and 3 before the first vaccination (at Day 0) and 1 month post-vaccination 3 (Day 150).