A.K. Onifade , A.O. Ogundare , Seroprevalence of Malaria Infection among Human Immunodeficiency Virus Patients in Ondo State, Nigeria, International Journal of Tropical Medicine, Volume 1,Issue 4, 2006, Pages 182-185, ISSN 1816-3319, ijtmed.2006.182.185, (https://makhillpublications.co/view-article.php?doi=ijtmed.2006.182.185) Abstract: Blood samples from 1410 patients within the age groups of 0-9, 10-19, 20-29, 30-39, 40-49 and 50-59, in Okitipupa, Akure, Owo, Ondo and Ikare-Akoko all in Ondo state Nigeria, were screened for the presence of human immunodeficiency virus (HIV-1 and HIV-2 antibodies). The subjects were made up of 570 (40.43%) males and 840 (59.57%) females. An overall prevalence of 206 (14.61%) was confirmed positive for HIV antibodies with HIV-1 accounting 75.24% (155/206), HIV-2 16.51% (34/206) and HIV- 1+2 accounting for only 8.25% (17/206). Out of the 206 seropositive samples, only 69 (33.50%) were positive for malaria. The highest prevalence of HIV antibodies was observed among age groups 20-29 (16.2%) and 30-39 (16.2%). There was an association between HIV and malaria infection. The highest prevalence of malaria infection in HIV seropositive patients was 66.7% and was observed among children within the age group of 0-9 years. Also, the prevalence rate of malaria in Okitipupa (50%) was highest, followed by Akure (35%), Owo (20%), Ikare (16.7%) and lastly Ondo town (12.5%). Keywords: Seropositive;seronegative;seroprevalence;malaria;HIV