The objectives of this study were to analyze the immunogenicity and reactogenicity of DTP/HB/Hib (Bio Farma) combination vaccine.

This trial was randomized, double blind, prospective intervention and multi centers. Total 600 subject (6-11 weeks of ages) followed this trial, divided into 3 groups, each group consists of 200 subjects. A number of 342 subjects were recruited in Bandung, while 258 subjects were recruited in Jakarta.

Inclusion Criteria:

• Infant 6-11 week of age
• Infant born after 37-42 week of pregnancy
• Infant weighting more than 2.5 kg at birth
• Father, mother or legally acceptable representative properly informed about the study and having signed the informed consent form
• Parents commit themselves to comply with the indication of the investigator and with the schedule of the trial
• Mother at least graduate from elementary school
• Received Hepatitis B vaccine (Bio Farma) at birth

Exclusion Criteria:

• Child concomitantly enroll or schedule to be enroll in another trial
• Evolving moderate or severe illness, especially infectious diseases or fever (axillary temperature >=37.5 Celsius on Day 0)
• Known history of allergy to any component of the vaccine component (e.g.formaldehyde)
• History of uncontrolled coagulopathy or blood disorder contraindicating intramuscular injection
• Known history of congenital or acquired immunodeficiency (including HIV infection)
• Child who has received in the previous 4 weeks a treatment likely to alter the immune response (intravenous immunoglobulin, blood derived product or long term corticotherapy (>2 weeks)
• Other vaccination within the 1 month prior to inclusion with the exception of BCG and poliomyelitis
• Any abnormality or chronic disease which according to the investigator might interfere with the assessment of the trial objective
• Infant with a known history of diphteria, tetanus, pertussis, Hib, Hepatitis B infection