Victoria’s flesh-eating ulcer outbreak has spread, which has caused authorities to issue a statewide alert to doctors.

Buluri Ulcer had been confined to the Bellarine and Mornington peninsulas.

However, new cases have now been reported in the suburb of Belmont, Geelong and the nearby town of Aireys Inlet on the Surf Coast.

Chief Health Officer Dr Brett Sutton issued an alert on Thursday, warning of the possible new areas of transmission.

The previously rare Buruli ulcer is an infectious disease that can cause gruesome, painful open wounds as bacteria chews through skin and tissue.

Anyone travelling to areas where cases have been reported are urged to avoic insect bites, protect cuts and see a doctor if they have any persistent skin lesions.

There were 340 cases of the disease in 2018.