Silent Circulation of Rift Valley Fever in Humans, Botswana, 2013–2014

Abstract

We evaluated the prevalence of Rift Valley fever virus IgG and IgM in human serum samples (n = 1,276) collected in 2013–2014 in northern Botswana. Our findings provide evidence of active circulation of this virus in humans in the absence of clinical disease in this region.

Keywords

• Aedes mosquitos, arboviruses
• Botswana
• Culex mosquitos
• infectious disease transmission
• livestock
• One Health