Sustained reduction in vaccine-type invasive pneumococcal disease despite waning effects of a catch-up campaign in Kilifi, Kenya: A mathematical model based on pre-vaccination data (Vaccine, 2017)

(untitled) - Ojal, J; Flasche, S; Hammitt, L; Akech, D; Kiti, M; Kamau, T; Adetifa, I; Nurhonen, M; Scott, J; Auranen, K