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Fred L. Soper and Alexander W. Burke crossing a bridge to investigate an area where yellow fever occurred without the Aedes aegypti mosquito
Fred L. Soper and Alexander W. Burke crossing a bridge to investigate an area where yellow fever occurred without the Aedes aegypti mosquito
Though a senior Rockefeller Foundation representative by 1934, Soper spent considerable time in the field, verifying reports of unexpected disease occurrences.
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