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Immunogenicity, reactogenicity and safety of a human rotavirus vaccine (RIX4414) in Korean infants: a randomized, double-blind, placebo-controlled, phase IV study

Authors
Kim, JS; Bae, CW; Lee, KY; Park, MS; Choi, YY; Kim, KN; Kim, JD; Park, WS; Sin, JB; Kim, EA; Lee, SG; Kim, CS; Cha, SH; Hong, YJ; Shin, SM; Shim, GH; Choi, KM; Yang, JW; Liu, A; Suryakiran, PV; Han, HH
Citation
Human vaccines & immunotherapeutics, 8(6):806-812, 2012
Journal Title
Human vaccines & immunotherapeutics
ISSN
2164-55152164-554X
Abstract
Rotavirus (RV) infection is the primary cause for childhood gastroenteritis worldwide. In Korea, RV infection is most common among children less than 5 years of age. This post-licensure study was conducted to further evaluate the RV vaccine (RIX4414) to provide additional local clinical data to the Korean Food and Drug Association. Healthy infants aged 6-12 weeks were enrolled to receive two doses of either RIX4414 or placebo as per 0, 1-2 month schedule. Blood samples were collected before dose-1 and one month post-dose-2 of RIX4414/placebo to assess serum anti-RV IgA antibody concentrations using ELISA. Gastroenteritis stool samples were tested for the presence of RV using ELISA. RV positive samples were subjected to further analysis for G and P typing. Among 684 infants enrolled and vaccinated, 432 infants (RIX4414=318; placebo=114) were included in the according-to-protocol cohort for immunogenicity. The anti-RV IgA antibody seroconversion rates in the RIX4414 group following one month post-dose-2 were 88.1% (95% CI: 84.0-91.4) and the corresponding geometric mean concentration in the RIX4414 group was 208.5 U/ml (95% CI: 174.2-249.5). Occurrence of solicited and unsolicited adverse events were similar in both, RIX4414 and placebo groups. None of the gastroenteritis stool samples tested positive for RV and no fatal SAEs were reported in either groups. The two-dose regimen of RIX4414 was observed to be immunogenic with a similar safety profile as compared to the placebo group, when administered to healthy Korean infants.
MeSH terms
Antibodies, Viral/immunologyDouble-Blind MethodEnzyme-Linked Immunosorbent AssayFemaleGastroenteritis/immunologyHumansImmunoglobulin A/immunologyInfantMaleRotavirus Vaccines/*adverse effects/*immunology/therapeutic useVaccines, Attenuated/adverse effects/immunology/therapeutic use
DOI
10.4161/hv.19853
PMID
22699440
Appears in Collections:
Journal Papers > School of Medicine / Graduate School of Medicine > Pediatrics & Adolescent Medicine
AJOU Authors
박, 문성
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