title: Human onchocerciasis foci and vectors in the American tropics and subtropics.
mesh_terms: D000818:Animals; D002489:Central America; D006801:Humans; D009855:Onchocerciasis / Q000635:transmission*; D012843:Simuliidae / Q000469:parasitology*; D013020:South America; D014329:Tropical Climate