Immunogenicity, reactogenicity and safety of human rotavirus vaccine (RIX4414) in Indian infants

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Abstract

Aim:

This study was undertaken to assess the immunogenicity, reactogenicity and safety of two doses of an oral live-attenuated human rotavirus vaccine, strain RIX4414 (RotarixTM) in an Indian setting.

Results:

The seroconversion rate observed one month post-dose 2 in the RIX4414 group 58.3% [95% CI: 48.7; 67.4] was significantly higher when compared to the placebo group 6.3%; [95% CI: 2.5; 12.5]. The reactogenicity and safety profile was similar for both groups.

Patients and methods:

Healthy infants (N = 363), approximately eight weeks of age were enrolled to receive two doses of RIX4414 vaccine (n = 182) or placebo (n = 181) separated by one month. To assess the immune response, blood samples were taken before vaccination and one month post-dose 2 of RIX4414/placebo. Solicited symptoms were collected for eight-days post each dose and safety data was collected throughout the study.

Conclusions:

Two doses of RIX4414 (RotarixTM) were immunogenic, had a good safety profile and were well-tolerated when administered to healthy Indian infants.

Clinical trials registration:

ClinicalTrials.gov; NCT00289172; eTrack 103792.

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