Norovirus is the leading cause of foodborne illness across the U.S., according to the Centers for Disease Control and Prevention . Raw or undercooked shellfish, especially oysters

Oysters linked to a norovirus outbreak that were shipped to retailers and distributors in New Jersey and other states have been recalled, according to the U.S. Food and Drug Administration. An event celebrating the top restaurants in Los Angeles that left at least 80 people sickened with norovirus was linked to the oysters,