OPINIONDr. Konstantin Chumakov and Dr. Robert Gallo, Opinion Contributors Published 3:15 a.m. ET April 21, 2020 | Updated 6:23 a.m. ET April 21, 2020CLOSE Pressure to create a coronavirus vaccine is increasing by the day, but for a safe vaccine to enter the market, it takes time. USA TODAYUsing the oral polio vaccine could prevent…
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