| evidence for transmission of plasmodium vivax among a duffy antigen negative population in western kenya. | we present evidence that a parasite with characteristics of plasmodium vivax is being transmitted among duffy blood group-negative inhabitants of kenya. thirty-two of 4,901 anopheles gambiae and an. funestus (0.65%) collected in nyanza province were elisa positive for the p. vivax circumsporozoite protein vk 247. all positives were found late in the rainy season, when an. funestus predominated, and disproportionately many were found at a single village. a p. vivax specific sequence of the ssu rr ... | 2006 | 17038676 |