<style face="normal" font="default" size="100%">Why onchocerciasis transmission persists after 15 annual ivermectin mass drug administrations in South-West Cameroon.</style>

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0<style face="normal" font="default" size="100%">Why onchocerciasis transmission persists after 15 annual ivermectin mass drug administrations in South-West Cameroon.</style><style face="normal" font="default" size="100%">Why onchocerciasis transmission persists after 15 annual ivermectin mass drug administrations in South-West Cameroon.</style>