Immunological impact of an additional early measles vaccine in Gambian children: Responses to a boost at 3 years

► Gambian infants were given one or two doses of measles vaccine. ► The kinetics of the immune response was compared after a boost. ► Antibody responses were equally rapid and high. ► Cell mediated responses were insignificantly different. ► Antibody concentrations decayed quicker in the two dose group.