Norovirus outbreaks occur throughout the year but are most common from November to April. Norovirus infection can cause the sudden onset of severe vomiting and diarrhea. The virus is highly contagious and commonly spread through food or water that is contaminated during preparation or through contaminated surfaces. The most important thing you can do to prevent the spread of norovirus is to WASH YOUR HANDS properly and stay home if you have symptoms! https://www.mayoclinic.org/.../symptoms-causes/syc-20355296
You can always report any potential foodborne illness after eating at a restaurant in Peoria County: https://redcap.dph.illinois.gov/surveys/?s=DDK4MYY4MK