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Upper Volta (now Burkina Faso 1971 SG353) Regional anti-onchocerciasis campaign: Control of Simulium damnosum, the black fly responsible for the transmission of onchocerciasis parasites. |
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Upper Volta (now Burkina Faso 1971 SG353) Regional anti-onchocerciasis campaign: Control of Simulium damnosum, the black fly responsible for the transmission of onchocerciasis parasites. |
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