Officials at the Food Safety Summit, held earlier this month at the Baltimore Convention Center, attended panels on dealing with food allergens, product testing, and food handler training. They also may have eaten food that got them sick.

According to the Baltimore Sun, four people who attended the conference called 311 to report feeling sick shortly after dining at the conference. No one got hospitalized, and no other cases of food poisoning were reported. Baltimore health inspectors visited Centerplate, the convention center’s food contractor, after the reports of illness. They found only one violation: condensation dripping from an ice machine. That problem (which, incidentally, wouldn’t be likely to cause food poisoning) has since been corrected.