Key result
BRV-PV did not interfere with the immunogenicity of concomitantly administered routine infant vaccines, demonstrating an anti-pertussis GMC ratio of 1.04 and seroprotection rate differences of less than 1% compared to Rotarix.
Why the study?
Does BRV-PV interfere with the immunogenicity of concomitantly administered routine infant vaccines compared to Rotarix in healthy infants?
RCT (n=1,500)
Open-label
1:1:1:1
Yes
Does BRV-PV interfere with the immunogenicity of concomitantly administered routine infant vaccines compared to Rotarix in healthy infants?
BRV-PV does not interfere with the immunogenicity of concomitantly administered routine infant vaccines.
Answers are grounded in this paper and cite their sources.
Supports co-administration of ROTASIIL with routine EPI vaccines without compromising immunogenicity; extends non-interference evidence to this reassortant vaccine.
BACKGROUND: A newly developed bovine-human reassortant pentavalent vaccine (BRV-PV, ROTASIIL®) was tested for its potential effect on the immunogenicity of concomitantly administered EPI vaccines in infants in a randomized controlled study in India. METHODS: In this Phase III, multicenter, open label, randomized, controlled study, three doses of BRV-PV or two doses of Rotarix® and one dose of placebo were given to healthy infants at 6, 10, and 14 weeks of age. Subjects also received three doses of DTwP-HepB-Hib (diphtheria, tetanus, whole-cell pertussis, hepatitis B, and haemophilus influenzae type b conjugate - pentavalent vaccine) and oral polio vaccine concomitantly at 6, 10, and 14 weeks of age and a single dose of inactivated polio vaccine at 14 weeks of age. Blood samples were collected four weeks after the final vaccination to assess immune responses to all the vaccines administered. For diphtheria, tetanus, hepatitis B, Hib, polio type 1, and polio type 3 antibodies, non-interference was to be supported if the lower limit of the two-sided 90% confidence interval (CI) for the seroprotection rate difference for the BRV-PV group minus the Rotarix® group was >10.0%. For pertussis antibodies, non-interference was to be supported if the lower limit of the two-sided 90% CI for the ratio of geometric mean concentrations (GMCs) was >0.5. RESULTS: A total of 1500 infants were randomized to either BRV-PV (1125 infants) or Rotarix® (375 infants), of which 1341 completed the study as per the protocol. More than 97% of subjects achieved seroprotective antibody titres against diphtheria, tetanus, hepatitis B, Hib, polio type 1, and polio type 3 in both groups. The difference in seroprotection rates between the BRV-PV group and the Rotarix® group for all these antibodies was less than 1%. The ratio of GMCs of anti-pertussis IgG concentrations for the BRV-PV group versus Rotarix® was 1.04 [90% CI: 0.90; 1.19]. CONCLUSION: BRV-PV does not interfere with the immunogenicity of concomitantly administered routine infants vaccines.
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Desai et al. (2018) conducted an RCT in Healthy infants (routine immunization) (n=1,500). Bovine-human reassortant pentavalent rotavirus vaccine (BRV-PV, ROTASIIL) vs. Rotarix (two doses at 6 and 10 weeks, placebo at 14 weeks) was evaluated on Anti-pertussis IgG geometric mean concentration (GMC) ratio (non-interference margin >0.5) (GMC ratio 1.04, 95% CI 0.90-1.19). BRV-PV did not interfere with the immunogenicity of concomitantly administered routine infant vaccines, demonstrating an anti-pertussis GMC ratio of 1.04 and seroprotection rate differences of less than 1% compared to Rotarix.
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