About 170 people have been sickened with a gastrointestinal illness after going to Yosemite National Park in California this month, and two of them have confirmed cases of norovirus.
The people sickened include park visitors and employees. The illnesses happened around the first week of January. Most peoples' symptoms are consistent with norovirus.
Norovirus is contagious and causes vomiting and diarrhea. It can be contracted by direct contact with an infected person, eating or drinking contaminated food and water and touching contaminated surfaces.
Yosemite National Park officials and medical professionals with the National Park Service Office of Public Health are investigating.
More articles on clinical leadership and infection control:
VA hospital deaths prompt House bill mandating safety reports
Allegheny Health Network cancels surgeries after Cardinal Health puts hold on surgical gowns
Flu has killed 6,600 Americans, CDC estimates