"The primary objective of this study was to demonstrate that co-administering HRV vaccine with OPV does not induce a significant decrease in poliovirus immune response one month after the third dose of combined vaccines.

The primary objective was reached if one month after the third dose of polio vaccine, upper limit of the 95% CI for the difference in Seroprotection rate between the group B and C pooled and (minus) the group A was below 10% for each polio serotype."

The study had three groups: Group A: HRV + OPV + DTPa/Hib; Group B: HRV + placebo OPV + DTPa-IPV/Hib; Group C: HRV Placebo + OPV + DTPa/Hib. Two cohorts: Subjects enrolled before the 2002 RV season were to receive two doses of HRV or placebo at approximately 6 and 10 weeks of age (first cohort) and subjects enrolled after the 2002 RV season received vaccinations at approximately 10 and 14 weeks of age (second cohort). Routine EPI vaccinations were to be administered concomitantly with the study vaccines.

Inclusion criteria: Healthy infants between 5 and 10 weeks of age at first study vaccination with (after the 2002 RV season) confirmed negative HIV status of the subject's mother during pregnancy or thereafter. Exclusion criteria: History of allergic disease, any confirmed or suspected immunosuppressive or immunodeficient condition, clinically significant history of chronic gastrointestinal disease or other serious medical condition as determined by the investigator or had not received treatment prohibited by the protocol.

Patient-level data for this study will be made available through www.clinicalstudydatarequest.com following the timelines and process described on this site.