[1] CTR DIS CONTROL, DIV VECTOR BORNE VIRAL DIS, FT COLLINS, CO 80522 USA
[2] FED VACCINE PROD LABS, YABA, NIGERIA
[3] KENYA MED RES INST, VIRUS RES CTR, NAIROBI, KENYA
[4] MINIST HLTH, MAKURDI, NIGERIA
[5] UNICEF, KENYA, NIGERIA
[6] UNIV IBADAN, IBADAN, NIGERIA
[7] NATL MALARIA & VECTOR CONTROL DIV, YABA, NIGERIA
[8] WHO REG HEADQUARTERS, Brazzaville, REP CONGO
[9] FED MINIST HLTH, LAGOS, NIGERIA