Health officials in Ottawa County, MI, have linked more than 100 cases of gastrointestinal illness to a Japanese restaurant in Holland Township. After talking with some of those sickened, the source of the problem was reported as Wild Chef Japanese Steakhouse Grill and Bar. Kristina Wieghmink of the Ottawa County Department of Public Health said officials were waiting for lab results to figure out the virus or bacteria behind the illnesses. “It’s still currently in the investigation process,” she said. Customers who ate at the restaurant between March 27 and April 1 reported symptoms of gastrointestinal illness, including  nausea, vomiting, diarrhea, cramping and low-grade fever. Wieghmink said it’s hard to determine the exact time that symptoms began because it depends on the pathogen and person who becomes ill and can take up to 24 hours after food is consumed. Once the health department was notified of the illnesses, Wieghmink said they contacted the restaurant, which voluntarily closed on Tuesday, April 1, so a full inspection could be launched. She said it is not clear when it will reopen. Health officials are asking people who ate at the restaurant between March 27 and April 1, regardless if they have symptoms, to take an online questionnaire to aid the investigation. The survey can be found at This past fall, there was a Salmonella outbreak linked to a Muskegon-area business, Pints & Quarts Pub and Grill and C.F. Prime Chophouse, which share the same kitchen. That outbreak sickened 32 people this past fall. The report from that outbreak stated “although no single source or act was specifically identified that caused this contamination, several practices were observed that could cause foodborne exposure to salmonella.” Salmonella is a foodborne illness acquired from eating contaminated eggs, raw poultry, and unpasteurized milk and cheese products.