Health officials say they are investigating a stomach flu outbreak, after over 100 people are apparently ill after attending an oyster festival, in Worcester County.

The Maryland Department of Health says on Friday, that their Division of Outbreak Investigation is working with the Worcester County Health Department to investigate a gastroenteritis outbreak that happened at a Beer and Oyster Festival, in Ocean City. The festival was apparently held at Fager’s Island Restaurant, on November 4.

According to state health officials, to date, there have been 145 cases of illness reported in Maryland, Delaware, Pennsylvania, and New Jersey that could be connected to the outbreak. There have been no reports of hospitalizations and deaths.