CNNPhiladelphia becomes first major US city to reinstate its indoor mask mandate as cases riseApr 11, 2022more_vert
City of Philadelphia (.gov)Philadelphia Moves to Mask Precautions; Masks Required | Department of Public HealthApr 11, 2022more_vert
NPRPhiladelphia to reinstate its mask mandate after a rise in COVID casesApr 11, 2022Jaclyn DiazBy Jaclyn Diazmore_vert