See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Norovirus is the leading cause of acute gastroenteritis in the United ...

Flu season may be mostly behind us, but a nasty, highly contagious stomach bug is rising. In recent weeks, hikers in Southern California have been hit with norovirus, according to the Pacific Crest ...

Add Yahoo as a preferred source to see more of our stories on Google. A highly contagious illness that can cause severe and even deadly vomiting and diarrhea is spreading at an alarmingly high rate ...

Add Yahoo as a preferred source to see more of our stories on Google. Hikers along Southern California's Pacific Crest Trail have been smacked with fast-spreading cases of a "winter vomiting disease" ...

Stomach flu during the monsoon is not limited to diarrhea and vomiting. Doctors explain why viral gastroenteritis can also cause brain fog, body aches, fatigue and dehydration, and when these symptoms ...

Hikers along Southern California's Pacific Crest Trail have been smacked with fast-spreading cases of a "winter vomiting disease" – and they aren't the only ones. The northeast has also been impacted.

Hikers along Southern California's Pacific Crest Trail have been smacked with fast-spreading cases of a "winter vomiting disease" – and they aren't the only ones. The northeast also has been impacted.