There’s a new strain of an intestinal bug making Minnesotans sick. The new strain of norovirus is called the Sydney Strain, and has arrived in Minnesota. Health officials say norovirus is unpleasant and can be very difficult to get rid of because its germs are not easily washed away. Norovirus is the most common cause of intestinal illness. It causes diarrhea, vomiting, cramps and sometimes fever. It peaks in winter and every few years, we get a new strain to which we are not immune. Billions of viral particles can be released when someone has norovirus. Some become airborne and it takes very few to make someone else sick. The best way to avoid it is to wash your hands frequently: after using the restroom, before eating or before preparing food. Norovirus is often transmitted via food prepared by someone who hasn’t washed their hands properly.