[50 millions people affected by onchocerciasis].
D001766:Blindness / Q000209:etiology*; D006801:Humans; D009855:Onchocerciasis / Q000150:complications / Q000453:epidemiology* / Q000517:prevention & control / Q000635:transmission
50 millioner mennesker rammet av "elveblindhet"/onchocerciasis.