Chipotle Mexican Grill faces 518 reports of foodborne illness linked to a possible outbreak at one of its restaurants in Powell, Ohio, according to CNBC.
The Delaware General Health District said Aug. 1 it received 95 emails and 423 calls related to the potential outbreak. The health department interviewed more than 200 people who self-reported symptoms like nausea, diarrhea and fever after eating at the Chipotle restaurant.
The Ohio Department of Health is testing fecal and food samples for salmonella, shigella, E. coli and norovirus. The department will also test the food samples for bacillus cereus and clostridium perfringens.
A Chipotle spokesperson declined CNBC's request for comment on the matter.
Chipotle has a history with foodborne illness, which has put some investors on edge. The company's stock remained mostly flat in aftermarket trading Aug. 1. The stock closed up 2 percent Aug. 1, recovering most of the losses it incurred after the possible outbreak was reported.