BACKGROUND: Human immunodeficiency virus (HIV) and malaria co-infection has become an important public health problem in sub-Saharan Africa. Data on HIV and malaria interaction in Nigerian adults is scanty. We determined the prevalence of malaria parasitaemia in HIV-infected adults and further investigated the role of immune status in the HIV/malaria association. METHODS: This was a cross-sectional study involving 100 newly-diagnosed HIV-infected adults and 100 age and sex-matched HIV negative controls. Malaria parasitaemia was diagnosed by blood film microscopy using Giemsa staining technique and was defined as the presence of malaria parasites irrespective of species or parasite density. HIV infection was confirmed by western blot assay and CD4 T-lymphocyte count of the HIV-infected patients was quantified by flow cytometry. RESULTS: The prevalence of malaria parasitaemia was higher in HIV-infected adults (24%) than in the controls (9%) (chi2 = 8.17, p = 0.04). Participants residing in rural areas had higher prevalence of malaria parasitaemia than urban dwellers both for HIV-infected patients (34.1% Vs. 16.1%, chi2 = 4.3, p = 0.04) and controls (18.4%, Vs. 6.5%, chi2 = 3.4, p = 0.04). HIV-infected male patients tended to have malaria parasitemia more than their female counterparts (33.3% Vs. 17.2%, chi2 = 3.4, p = 0.06). Among HIV-infected patients, the prevalence of malaria parasitaemia progressively increased at lower CD4 cell counts, 10.3% for CD4 cell count of = 500, 17.5% for 200-499 and 45.2% for < 200 cells/microL (chi2 = 11.5, p = 0.003). CONCLUSION: HIV is likely to fuel malaria infection in tropical countries where both diseases are endemic. Malaria control practices should be further intensified in HIV-infected populations.
BACKGROUND: Human immunodeficiency virus (HIV) and malaria co-infection has become an important public health problem in sub-Saharan Africa. Data on HIV and malaria interaction in Nigerian adults is scanty. We determined the prevalence of malaria parasitaemia in HIV-infected adults and further investigated the role of immune status in the HIV/malaria association. METHODS: This was a cross-sectional study involving 100 newly-diagnosed HIV-infected adults and 100 age and sex-matched HIV negative controls. Malaria parasitaemia was diagnosed by blood film microscopy using Giemsa staining technique and was defined as the presence of malaria parasites irrespective of species or parasite density. HIV infection was confirmed by western blot assay and CD4 T-lymphocyte count of the HIV-infectedpatients was quantified by flow cytometry. RESULTS: The prevalence of malaria parasitaemia was higher in HIV-infected adults (24%) than in the controls (9%) (chi2 = 8.17, p = 0.04). Participants residing in rural areas had higher prevalence of malaria parasitaemia than urban dwellers both for HIV-infectedpatients (34.1% Vs. 16.1%, chi2 = 4.3, p = 0.04) and controls (18.4%, Vs. 6.5%, chi2 = 3.4, p = 0.04). HIV-infected malepatients tended to have malaria parasitemia more than their female counterparts (33.3% Vs. 17.2%, chi2 = 3.4, p = 0.06). Among HIV-infectedpatients, the prevalence of malaria parasitaemia progressively increased at lower CD4 cell counts, 10.3% for CD4 cell count of = 500, 17.5% for 200-499 and 45.2% for < 200 cells/microL (chi2 = 11.5, p = 0.003). CONCLUSION:HIV is likely to fuel malaria infection in tropical countries where both diseases are endemic. Malaria control practices should be further intensified in HIV-infected populations.
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