Norovirus, or the stomach flu, is making the rounds, leading to warnings from public health officials to stay home if you feel unwell.

The virus results in vomiting, diarrhea and stomach pain, and can be of particular concern for the very young, the very old, and those with compromised immunity.

While most healthy people get over it in a few days, dehydration is the greatest concern, especially when it’s difficult to keep down food or fluids.

The Medical Officer of Health with NL Health Services, Dr. Itai Malkin, says norovirus is spread through close contact with an infected person, or by touching contaminated surfaces.

“For example, if you touch a doorknob and then you go and eat a sandwich, if there are any virus particles on that doorknob, that now made their way to your mouth, that is a risk for catching norovirus.”

Malkin says it’s important to wash your hands frequently with warm water and soap, especially before eating and after touching common surfaces.

Another way to prevent the spread of norovirus is to stay home from work or school while sick, and for two full days after symptoms subside.