Food poisoning, a widespread illness, stems from consuming food contaminated with bacteria, viruses, or parasites. Symptoms ...

Jon Gonella, a MedStar physician's assistant, has 25 years of experience treating patients with vomiting and diarrhea and diagnosing and managing viral illnesses, particularly norovirus.

Outbreaks of norovirus, which causes acute gastroenteritis, leading people to get sick with nausea, vomiting or diarrhea, are being reported as above the range in the U.S. compared to previous years, ...

Norovirus has been linked to twelve outbreaks on cruise ships in 2025, sickening nearly 1,500 people, according to CDC data.

Norovirus is highly contagious, with fewer than 100 particles enough to cause illness. It spreads through close contact, contaminated surfaces, and food prepared by infected individuals.

A Vaccine for the Dreaded Norovirus Is Closer Than Ever Norovirus infection rates are extremely high this year, raising the question: Why can’t a vaccine protect us from the stomach bug?

Tiffany Mattingly of Ohio's Health Collaborative said that while most people recover from the nausea, vomiting, and diarrhea caused by norovirus, it can lead to hospitalizations.

How long does norovirus last? Norovirus runs its course fairly quickly — in just a couple of days — compared to some viral infections that can last for up to a few weeks.

Norovirus is the the leading cause of vomiting and diarrhea in the United States. It infects an average of about 20 million U.S. residents annually, according to the CDC.