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The top documents tagged [polio epidemics]
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Non invasive ventilation
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Health & Medicine
The unknown facts of polio
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1954 Salk polio vaccine trials ► Biggest public health experiment ever ► Polio epidemics hit U.S. in 20 th century ► Struck hardest at children ► Responsible
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THE TEN GREAT ACHIEVEMENTS OF PUBLIC HEALTH MODULE #2
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FREEDOM OF THE PRESS
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Eleanor Roosevelt “First Lady of the World”
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