Distribution of HIV-1 and HSV-2 epidemics in Chad revealing HSV-2 hot-spot in regions of high-risk HIV spread.

Introduction: Herpes Simplex Virus-2 (HSV-2) is known to be a potent co-factor of Human Immunodeficiency type 1 virus (HIV-1) heterosexual transmission. We were interested in assessing the distribution of HIV-1 and HSV-2 epidemics at the national level in Chad.

Methodology: In 2007, a population-based anonymous serosurvey for HIV-1 and HSV-2 infections, using dried blood spots, was conducted.