The San Francisco Chronicle reports that the San Francisco’s Department of Public Health is investigating an E. coli outbreak that infected 14 people earlier this month, many after they dined at the Burma Superstar restaurant on Clement Street.

Investigators said in a statement Friday that they believe nine of the 14 infected people were exposed to the bacteria when they visited the restaurant in the Inner Richmond neighborhood on Aug. 16 or 17. There have been no fatalities.

The origin of the outbreak is still unknown. Investigators said there have been no new cases since mid-August and they do not think there is an ongoing public health risk.

Burma Superstar, located on Clement Street near Fourth Avenue, will remain open during the investigation, but owner Desmond Tan said he will close it voluntarily for the weekend voluntarily and reopen Monday.

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