A health warning has been issued for those who have consumed food from Sumo Salad in the Sydney CBD following the diagnosis of Hepatitis A in an employee.

People who have eaten from the Kent St store between July 19-26 are being urged to seek out the Hepatitis A vaccine.

Those who bought food from the outlet between July 11-18 are encouraged to visit their GP if they begin to develop any symptoms including poor appetite, abdominal discomfort, jaundice and dark urine.

The individual employee, who contracted the virus while overseas. is no longer working in the store.