Norovirus and its varying strains are nothing new, but health experts are seeing increased activity compared to other years.

A 'quad-demic' of winter illnesses is surging throughout the South, Midwest, and parts of the Northeast US, according to the ...

Both states have reported declines in uptake of the measles, mumps, and rubella (MMR) vaccine, which is one of the most ...

The U.S. is seeing a "quad-demic" as cases of COVID-19, flu, RSV and norovirus spread at the same time. Experts said this is ...

At least 15 states have very high levels of influenza, according to the Centers for Disease Control and Prevention.

Dr. Kristin Moffitt from Boston Children's Hospital discusses spike in flu cases among children across Massachusetts.

Twenty states (plus D.C.) had "very high" levels of the virus present in wastewater, an increase from 16 states the week before.

COVID-19, influenza, RSV, and norovirus—have created what experts are calling a "quad-demic" in the U.S. Here's what to know ...

Respiratory illnesses, including COVID-19, influenza, and RSV, are surging across the United States, with healthcare systems ...