According to the U.S. Centers for Disease Control and Prevention, there were nearly as many outbreaks by mid-2025 as there ...

With the decrease of GII.4 outbreaks since 2024, whether GII.17 viruses will continue to cause an earlier onset of the norovirus season cannot yet be determined," the CDC researchers wrote.

With the decrease of GII.4 outbreaks since 2024, whether GII.17 viruses will continue to cause an earlier onset of the norovirus season cannot yet be determined," the CDC researchers wrote.

As norovirus outbreaks surge on cruises, here's how the CDC says passengers should protect themselves. Thus far in 2025, the CDC has issued notifications on 16 separate cruise outbreaks, outpacing ...

In all of 2023, there were 14 outbreaks that required public notification. In 2024, there were 18. For comparison, just one percent of all norovirus outbreaks take place on cruise ships, per the CDC.

Norovirus cases spike, CDC says. What to know about the highly contagious stomach bug. Story by Natalie Demaree • 5mo. Certain areas of the United States are seeing spikes in cases of norovirus, ...

There were 10 gastrointestinal outbreaks in 2019, and 11 each in 2018 and 2017, according to CDC records. Norovirus was also the cause in many of those cases.