Health & Science

A person in California became the first in the U.S. to have an identified case of the COVID-19 omicron variant, the White House announced Wednesday.

Today is World AIDS Day, an annual opportunity to show support for people living with HIV and honor those who have died from AIDS-related illnesses.

There have been no reports of the omicron variant in Philadelphia. But health officials warn city residents to take caution, as the variant will likely find its way here.

The city’s rate for 5- to 11-year-olds is still below the national average.

What's the U.S. doing to watch out for the omicron variant? Here's the work underway and the challenges that experts say may slow down the country's efforts.

What we know and don't know about the new COVID variant omicron?

Pfizer's CEO says the vaccine maker has asked federal regulators to authorize boosters for 16- and 17-year-olds.

Among the policies being considered is a requirement that all air travelers to the U.S. be tested for COVID-19 within a day of boarding their flight.

The FDA isn’t bound by the panel’s recommendation and is expected to make its own decision before the end of the year.

After a bruising year in 2020, natural gas production and prices in Pennsylvania are on the rise this year.

The more COVID-19 spreads among unvaccinated populations, the more possibilities it has to mutate and potentially become more dangerous, prolonging the pandemic for everyone.

The FDA is considering pills that could treat people in early stages of COVID. Here's what to know about how they work, how effective they are and the impact they could make.

The preliminary injunction applies to a coalition of suing states that includes Alaska, Arkansas, Iowa, Kansas, Missouri, Nebraska, New Hampshire, North Dakota, South Dakota.

Health officials said the Garden State’s public and commercial labs are sequencing around 1,200 specimens a week, on the lookout for changes to the coronavirus.

A leading scientist at the Penn lab that detected the first cases of delta says omicron will inevitably arrive here. He says the question is, “how much does it matter?"