As the flu season goes into overdrive, how do you know if you have the viral infection or another of the nasty diseases that tend to be more prevalent in the winter?

Symptoms usually develop between 12 to 48 hours after a person is exposed to norovirus. It is also possible for someone to never show symptoms of the virus but still be contagious. The most common symptoms include diarrhea, vomiting, nausea and stomach pain. Less common but still possible are fever, headache and body aches.

Flu season is here in New Jersey, but other illnesses are in full swing in the Garden State. Here are the symptoms and how long you're contagious.

Cold, flu, norovirus, and COVID-19 share overlapping symptoms like fever, cough, and fatigue, but differ in severity and duration. Handwashing, vaccines, and staying home when sick can help prevent infections.