Health & Science

Philly reinstated an indoor mask mandate, a federal judge struck down the mask mandate on planes, trains, and public transportation, and COVID infections are climbing.

The CDC continues to assess public health conditions, and if the agency determines a mandate is necessary, the Justice Department will file an appeal.

Less than 24 hours after the city's mask mandate went into effect, the city’s regional transit provider SEPTA announced that masks would no longer be required on its vehicles.

HIV remains a problem in the U.S. because people don't use life-saving prevention and treatments. COVID is heading down the same path.

The agency says it will take stronger actions to curb water pollution in the state.

Area quarantined — 1.4 million chickens killed to prevent spread.

The city of Philadelphia's renewed mask mandate went into effect today, as the city's infection rate has nearly doubled over the past two weeks.

In light of the growing kids' mental health crisis, the group says it's crucial to identify kids who are struggling.

There’s a lawsuit to stop it, but no court decisions have been made.

Some groups of people are eligible for second COVID-19 booster shots. But the advice around boosters can be confusing. Here’s what Penn experts suggest you know.

A bipartisan bill aims to permanently allow pharmacists and trained pharmacy staff members to vaccinate children. Pennsylvania Medical Society doctors oppose it.

The U.S. Justice Department grant will be used, in part, to get people into treatment. And, to help children of substance abusers.

Climate change is causing fish species to travel in search of suitable temperatures, and it’s impacting the marine food web, a Rutgers study finds.

The four-hospital system in Delaware County has been reaching out to municipalities, threatening to shut off emergency medical services within 90 days unless they pay up.

The U.S. may be heading into another COVID-19 surge, with cases rising nationally and in most states after a two-month decline.