A new study finds that COVID 19 vaccine mandates at U-S colleges last year helped to save lives in their surrounding counties. KYW Newsradio's John McDevitt reports….although the vaccine mandates were controversial, researchers say they had sizable positive effects. (Photo credit -slav-/Getty Images)

<p>A new study finds that COVID 19 vaccine mandates at U-S colleges last year helped to save lives in their surrounding counties. KYW Newsradio's John McDevitt reports….although the vaccine mandates were controversial, researchers say they had sizable positive effects. (Photo credit -slav-/Getty Images)</p>

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