To assess the beneficial and harmful effects of pre-exposure hepatitis A vaccines (inactivated and live-attenuated) administered to adults and children versus no intervention, placebo, or any other vaccine.
This is a protocol.
To assess the beneficial and harmful effects of pre-exposure hepatitis A vaccines (inactivated and live-attenuated) administered to adults and children versus no intervention, placebo, or any other vaccine.
This is a protocol.