Lead: Sanitation made possible the construction of the Panama Canal.

Tag: A Moment in Time with Dan Roberts.

Content: In the years following the Spanish American War, Army Surgeon Dr. Walter Reed had transformed the city of Havana, Cuba, virtually eliminating the tropical diseases of malaria and yellow fever. He did so by rejecting the common medical wisdom of the time that such illnesses were caused by bad air or swamp gas. Reed went after the mosquito which, some scientists at the time believed, transmitted the diseases when it fed upon a victim. Reed cleaned up the city. Malaria and yellow fever were almost completely eradicated.

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