Lack of avidity maturation of merozoite antigen-specific antibodies with increasing exposure to Plasmodium falciparum amongst children and adults exposed to endemic malaria in Keny... by Ibison, F, Olotu, A, Muema, D, Mwacharo, J, Ohuma, E, Kimani, D, Marsh, K, Bejon, P, Ndungu, F