Alexander N, Balmaseda A, Coelho IC, Dimaano E, Hien TT, Hung NT, J%E4nisch T, Kroeger A, Lum LC, Martinez E, Siqueira JB, Thuy TT, Villalobos I, Villegas E, Wills B; on behalf of the European Union, World Health Organization (WHO-TDR) supported DENCO Study Group.