FILE - A sign requiring masks as a precaution against the spread of the coronavirus on a store front in Philadelphia, is seen Feb. 16, 2022. Philadelphia is reinstating its indoor mask mandate after reporting a sharp increase in coronavirus infections, Dr. Cheryl Bettigole, the city's top health official, announced Monday, April 11, 2022. Confirmed COVID-19 cases have risen more than 50% in 10 days, the threshold at which the city's guidelines call for people to wear masks indoors. (AP Photo/Matt Rourke, File)
PHILADELPHIA — Several businesses and residents have filed suit in state court in Pennsylvania seeking to overturn Philadelphia’s renewed indoor mask mandate scheduled to be enforced beginning Monday in an effort to halt a surge in COVID-19 infections.