The primary objective of this study is to assess the cumulative anti-rotavirus serum IgA response (defined as a ≥3 fold increase from baseline) 4 weeks after 3 doses of RV3-BB administered in a neonatal schedule at a High, Mid or low vaccine titre. In addition the cumulative anti-rotavirus serum IgA response (defined as a ≥3 fold increase from baseline) 4 weeks after 3 doses of RV3-BB administered in an infant schedule at a high dose of vaccine will be assessed along with cumulative vaccine take and components of vaccine take after 3 doses of RV3-BB administered in a neonatal or infant schedule.~The safety and tolerability of RV3-BB when administered as an infant or as a neonatal schedule will be described.
The purpose of this study is to determine the serum IgA response of three dose levels of the oral RV3-BB vaccine when administered in a neonatal schedule or when administered as a high dose in an infant schedule.