Nearly half a million Americans visit the emergency room (ER) each year with a fast-spreading stomach bug called norovirus.

What is norovirus? The stomach bug is so contagious and it spreads easily this time of year.

Here's what you need to know about this season's H3N2 flu symptoms, treatment, when to go to the hospital and whether to get ...

A norovirus particle is pictured in this 3D illustration by Jessica A. Allen for the U.S. Centers for Disease Control and Prevention, shared via Wikimedia Commons. CDC / Jessica A. Allen, Illustrator: ...

If you’re in the Tri-Cities and have been feeling ill, it may be norovirus. The Benton Franklin Health District reports a sharp rise in the highly contagious stomach bug throughout the two counties.

Norovirus, also known as the "stomach flu" or "winter vomiting sickness," is active in California and across the nation. But cleaning and disinfecting can help check its spread, experts say.

A nasty stomach bug is on the rise again in the U.S. as winter sets in, and key habits can keep you safe, according to health officials. The top driver of foodborne illness nationwide, norovirus ...

Norovirus, also known as the “stomach flu” or “winter vomiting sickness,” is active across the nation. But cleaning and disinfecting can help check its spread, experts say. Precautions are crucial ...

A highly contagious stomach virus with no real treatment is spreading rapidly across the United States. From Aug. 1 through Nov. 13, there were 153 norovirus outbreaks reported in 14 states, according ...

Drink clear liquids like water and broth to stay hydrated and prevent dehydration. Eat bland carbohydrates like saltine crackers and white rice to settle your stomach. Try plain yogurt with probiotics ...

Don't just assume symptoms like nausea and vomiting are a stomach bug. It could also be this nightmare illness.