Now customers and workers must cover their faces at businesses like grocery stores and post offices.
Levine says it's up to businesses to enforce the rule — at least right now. Stores can deny entry to people who do not have something to cover their face.
“If someone comes to a store and is not wearing a mask, then they’ll most likely be asked to go home and to get a mask," Levine said.
“The masks that we are asking people to wear are cloth masks. Those are the cloth masks you can buy in a store or on the internet. Or a cloth mask you make yourself.”
Their purpose is to limit the spread of the coronavirus. Health officials say that anyone, including people who are not showing any symptoms of COVID-19, may be a carrier of the virus.
“We expect that Pennsylvanians will do the right thing, and the shops and businesses will do the right thing, and that everyone will be wearing a mask, which protects our community," she said.
Officials say, even with masks, people should not make non-essential trips. Everyone is still expected to maintain social distancing and to wash their hands frequently.
New Jersey started to enforce a similar statewide rule on face masks a few weeks ago.
In Delaware, masks are recommended, but they are not yet required.