Several more people in Melbourne have contracted measles, taking the current outbreak to 11 cases, Victoria's Health Department says.

Eight of the 11 cases are connected through a workplace at the Collins Square building in Docklands and its immediate surroundings. Two other people affected passed through Melbourne's international terminal on flights to and from Asia. Earlier cases in September included a baby boy, but the latest cases are all adults.

Chief Health Officer Charles Guest said those who worked in and around the Collins Square building needed to be aware of the signs and symptoms of the disease.

Collins Square is home to numerous companies, including KPMG, CBA, Transurban, Maddocks and the Australian Taxation Office.