Hundreds of people who dined at one of Melbourne’s best restaurants will be contacted by the health department after a food handler was diagnosed with a highly contagious liver infection.

The Age reports the staff member at Cumulus Inc., in the fine-dining hotspot of Flinders Lane, was recently found to have hepatitis A.

An alert issued by Victoria’s Department of Health on Thursday afternoon said anyone who ate at the restaurant between February 26 and March 19 should visit their GP for a free hepatitis A vaccine, and seek urgent medical attention if they feel unwell.

The department is also contacting anyone who booked at the restaurant during the same time period.

It is not yet clear how the male staff member contracted hepatitis A.

However, Victoria has been recently experiencing a local outbreak of the infectious disease, which has already claimed one life.

In response to the dozens of cases in recent months, a free vaccine has been offered to Victorian men who have sex with men and people who have injected drugs in the past year.

It follows an unusual increase in hepatitis A cases in Europe and North America that has affected hundreds of people.

The restaurant said that the hygiene systems at Cumulus Inc. were robust and safety of guests paramount.

The sick employee, who was involved in the plating up and preparation of food, is expected to make a full recovery.

Cumulus Inc. is prolific restaurateur Andrew McConnell’s stalwart all-day city restaurant, with wine bar Cumulus Up operating above.

Occupying an old clothing factory in Flinders Lane, the restaurant has consistently maintained a hat in the Good Food Guide since it opened in 2008.

Famous for its slow-cooked lamb shoulder, and still the go-to for boozy business brunches it is a kingpin of the McConnell restaurant empire, which also includes Marion, Cutler and Co. and fellow Flinders Lane occupant Supernormal.