As the new year begins and the depths of winter approach, U.S. infectious disease experts monitoring the "tripledemic" stew of viruses that have been plaguing the country.

Multisystem inflammatory syndrome in children is a rare, but serious condition that appears two to six weeks after a child’s COVID-19 infection.

The messages, one of which instructed children not to wear masks, were painted on the sidewalks outside Meredith and Nebinger Elementary Schools in South Philly.

The mask mandates follow rising COVID, flu, and RSV cases across the Delaware Valley.

The lawsuit calls Drexel's investigation into Doroshin's conduct and resulting disciplinary process "deeply flawed."

The increase in COVID cases across China follows the rollback of the nation's strict anti-virus controls.

"It's just really critical that [people] — especially those at high risk — understand the value of getting vaccinated and making sure they stay up to date on their boosters."

The district's decision comes amid rising COVID, flu, and RSV cases.

People are gathering indoors for the holidays, and there's been an uptick in COVID-19 cases. The federal government says you should test often to try to prevent virus spread.

The school district’s decision comes amid concerns of the "tripledemic" of respiratory syncytial virus (RSV), influenza (flu), and COVID-19.

NPR asked a handful of public health experts how to approach a holiday season with not one but three respiratory pathogens helping fill hospitals: COVID, the flu and RSV.

The CDC is advising people to practice indoor masking in nearly a tenth of U.S. counties, as three highly contagious respiratory viruses sweep the country.

Nursing homes leaders are redoubling efforts to get staff and residents boosted with the new version of the COVID-19 vaccine.

Just under 14% of Pennsylvanians, age five or older, have gotten the shot, according to data from the Centers for Disease Control and Prevention.

During the first three Fridays of December, residents can pick up tests at the county Wellness Centers in Yeadon and Chester from 2 to 4 p.m.