Polio vaccine inventor's son on resurgence of virus in U.S.

1 year ago
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New York city health officials says the virus that causes polio has been detected in the city's wastewater. CBS News' Vladimir Duthiers and Anne-Marie Green discuss the resurgence of the virus with Dr. Peter Salk, a professor at University of Pittsburgh School of Public Health and son of the man who invented the polio vaccine.

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