INFERRING THE YELLOW FEVER FORCE OF INFECTION FROM THE OBSERVED AGE DISTRIBUTION OF CONFIRMED CASES - Garske, T; Jean, K; Van, Kerkhove MD; Yactayo, S; Perea, W; Biey, J; Sall, A; Donnelly, CA; Ferguson, NM (AMER SOC TROP MED & HYGIENE, 2015)