Two babies in Sydney have contracted measles as they were too young to be vaccinated, putting New South Wales in a position where it is well on its way to breaking its highest rate of the disease in five years.

The eight-month-old and 11-month-old most likely caught the infection from two people, a backpacker in the CBD and a man in Eastwood, who reported spending time in a number of public places while being infected with measles.

This diagnosis has prompted New South Wales Health to warn the public again to be aware and actively looking for measles symptoms.

New South Wales Health director of communicable diseases, Dr Vicky Sheppeard, said it can take up to 18 days for symptoms to appear and “if you [do] develop symptoms, please call ahead to your GP to ensure you do not wait in the waiting room with other patients.”