We conducted a cross-sectional study of Crimean-Congo hemorrhagic fever virus (CCHFV) in northern Tanzania. CCHFV seroprevalence in humans and ruminant livestock was high, as were spatial heterogeneity levels. CCHFV could represent an unrecognized human health risk in this region and should be included as a differential diagnosis for febrile illness.
Keywords: Crimean-Congo hemorrhagic fever virus; Tanzania; hemorrhagic fever; livestock; public health surveillance; tickborne diseases; vector-borne infections; viruses; zoonoses.