- The city of Philadelphia will reinstate an indoor mask mandate, the first major U.S. city to do so this spring.The New York Times
- Philadelphia will reinstate its indoor mask mandate as cases riseCNN
- Philadelphia Health Department To Announce If They Will Reinstate Mask MandateCBS Philly
- Indoor mask mandate could return in Philly; Officials indict 14 for illegally trafficking guns to PhiladelphiaFOX 29 Philadelphia
- Philly will require masks in indoor public spaces again as COVID-19 cases riseThe Philadelphia Inquirer