Journal Article

Assessment of safety and immunogenicity of two different lots of diphtheria, tetanus, pertussis, hepatitis B and Haemophilus influenzae type b vaccine manufactured using small and large scale manufacturing process

Wade, Minal, Shewale, Sunil D., Patil, Vishwanath D., Parekh, Sameer S., Lalwani, Sanjay K., Arunprasath, T.K., Sharma, Hitt J., Palkar, Sonali, Ravichandran, Latha, Kumar, Dinesh, Manglani, Mamta V., Kapre, Subhash V., Jadhav, Suresh S., Ashtagi, Girija, Malshe, Nandini

2012

Overview

► Hib vaccine manufactured in small or large scale were equally immunogenic and safe. ► Both vaccines provided adequate seroprotection in the target population. ► Neither immunological interference nor increased reactogenicity was observed. ► Scaled up vaccine can be easily incorporated in the routine immunization programme. Hib vaccine can be easily incorporated in EPI vaccination schedule as the immunization schedule of Hib is similar to that of DTP vaccine. To meet the global demand of Hib vaccine, SIIL scaled up the Hib conjugate manufacturing process. This study was conducted in Indian infants to assess and compare the immunogenicity and safety of DTwP-HB+Hib (Pentavac®) vaccine of SIIL manufactured at large scale with the ‘same vaccine’ manufactured at a smaller scale. 720 infants aged 6–8 weeks were randomized (2:1 ratio) to receive 0.5ml of Pentavac® vaccine from two different lots one produced at scaled up process and the other at a small scale process. Serum samples obtained before and at one month after the 3rd dose of vaccine from both the groups were tested for IgG antibody response by ELISA and compared to assess non-inferiority. Neither immunological interference nor increased reactogenicity was observed in either of the vaccine groups. All infants developed protective antibody titres to diphtheria, tetanus and Hib disease. For hepatitis B antigen, one child from each group remained sero-negative. The response to pertussis was 88% in large scale group vis-à-vis 87% in small scale group. Non-inferiority was concluded for all five components of the vaccine. No serious adverse event was reported in the study. The scale up vaccine achieved comparable response in terms of the safety and immunogenicity to small scale vaccine and therefore can be easily incorporated in the routine childhood vaccination programme.

• Publisher: Elsevier Ltd,Elsevier Limited
• Subject: Allergy and Immunology / Antibodies, Bacterial - blood / Antibodies, Viral - blood / blood serum / childhood / children / Diarrhea / Diphtheria / Diphtheria-Tetanus-Pertussis Vaccine - administration & dosage / Diphtheria-Tetanus-Pertussis Vaccine - adverse effects / Diphtheria-Tetanus-Pertussis Vaccine - immunology / enzyme-linked immunosorbent assay / Haemophilus influenzae / Haemophilus influenzae type b vaccine / Haemophilus Vaccines - administration & dosage / Haemophilus Vaccines - adverse effects / Haemophilus Vaccines - immunology / hepatitis B / hepatitis B antigens / Humans / immune response / Immunization / Immunogenicity / immunoglobulin G / Immunoglobulin G - blood / India / Infant, Newborn / infants / Large scale / Male / Manufacturing / Manufacturing industry / Mortality / Pain / Pentavalent vaccine / Poliovirus Vaccine, Inactivated - administration & dosage / Poliovirus Vaccine, Inactivated - adverse effects / Poliovirus Vaccine, Inactivated - immunology / Safety / safety assessment / Studies / Technology, Pharmaceutical - methods / Tetanus / vaccination / Vaccination - adverse effects / Vaccination - methods / Vaccines / Vaccines, Combined - administration & dosage / Vaccines, Combined - adverse effects / Vaccines, Combined - immunology