The San Francisco Department of Public Health is investigating a 14-person E. coli outbreak that has reportedly been linked to a popular Burmese restaurant, according to a report in the San Francisco Chronicle. On Friday, the Chronicle reported that public health department employees believe 9 of 14 E. coli O157:H7 cases can be linked to food served at the Burma Superstar restaurant in the Inner Richmond neighborhood on August 16 or 17. While the outbreak source is unknown, Burma Superstar reportedly closed voluntarily for the weekend. E. coli O157:H7 causes severe diarrheal illness. Diarrhea and severe stomach cramps are the most common symptoms of E. coli infection. Diarrhea can contain mucous or be bloody. According to the health department, at least one case of hemolytic uremic syndrome has been reported among the 14 E. coli cases. Hemolytic uremic syndrome, or HUS, can cause kidney failure.