Protectivity and safety following recombinant hepatitis B vaccine with different source of bulk compared to hepatitis B (Bio Farma) vaccine in Indonesia

Comparison of Immunogenicity and Safety of Diphtheria-Tetanus-Pertussis-Hepatitis B-Haemophilus influenza B (Bio Farma) with Pentabio® Vaccine Primed with Recombinant Hepatitis B at Birth (Using Different Source of Hepatitis B) in Indonesian Infants

Satisfying the needs of the national immunization program requires maintaining diphtheria-tetanus-pertussis (DTP)-hepatitis B (HB)-Haemophilus influenza B (Hib) production. Therefore, new hepatitis B sources are needed. This study aimed to evaluate the immunogenicity of the DTP-HB-Hib vaccine (Bio Farma) that used a different source of hepatitis B. A prospective randomized, double-blind, bridging study was conducted. Subjects were divided into two groups with different batch numbers. Healthy infants 6-11 weeks of age at enrollment were immunized with three doses of the DTP-HB-Hib vaccine after a birth dose of hepatitis B vaccine. Blood samples were obtained prior to vaccination and 28 days after the third dose. Adverse events were recorded until 28 days after each dose. Of the 220 subjects, 205 (93.2%) completed the study protocol. The proportion of infants with anti-diphtheria and anti-tetanus titers ≥ 0.01 IU/mL was 100%, with anti-HBsAg titers ≥ 10 mIU/mL was 100%, and with Polyribosylribitol Phosphate-Tetanus Conjugate (PRP-TT) titers > 0.15 µg/mL was 96.1%. The pertussis response rate was 84.9%. No serious adverse events related to the study vaccine occurred. The three-dose DTP-HB-Hib vaccine (Bio Farma) is immunogenic, well tolerated, and suitable to replace licensed-equivalent vaccines.

Inspiration to mRNA-based COVID-19 vaccination: Serious adverse case reports with hepatitis B vaccine in real-world

OBJECTIVES

The hepatitis B vaccine comprises hepatitis B surface antigen (HBsAg) produced by transgenic yeast cells. There are few serious adverse events (SAE) reports after Hepatitis B vaccination.

METHODS

The authors searched the Chinese legal documents database for all SAE with Hepatitis B vaccination from January 2010 to January 2022.

RESULTS

All seven patients received yeast-derived recombinant hepatitis B vaccine. Three cases of myocarditis (death), 2 cases of interstitial pneumonia (death), and 2 cases of encephalitis. The mean time of onset of SAE was 8.3 ± 4.3 h after vaccination.

CONCLUSION

The mechanism of vaccine-induced myocarditis may come from immune protein reactions. Based on the experience of Hepatitis B vaccine adverse events, we present new insights into the mechanism of myocarditis caused by the COVID-19 vaccine.