US doctor issues warning of many undiagnosed polio cases BBCBill Gates Reacts To Polio Virus Detection In New York Sewers: 'Remains A Threat Until We End It' BenzingaNY Health Officials Warn Hundreds of People Are Possibly Infected with Polio, Urge Immediate Action CBN.comPolio outbreak: What to know about signs, symptoms of virus as fears rise in New York amid possible community spread WABC-TVRichmond health leader encourages vaccination amid reported polio case in New York CBS 6 News Richmond WTVR