Omicron subvariant fuels COVID-19 surge across US | WNT Posted by covid 19 updates April 13, 2022 ShareABC News Philadelphia has become the first major U.S. city to reinstate an indoor mask mandate in response to rapidly rising COVID-19 cases fueled by the BA-2 variant. #Coronavirus #Omicron #MaskMandate #COVID-19 #WorldNewsTonight covid 19 updates April 13, 2022
