A new coronavirus cluster has emerged at a neonatal intensive care unit (NICU) in Victoria including a baby under three weeks old.
The Department of Health and Human Services (DHHS) announced the new infections on Monday which originated at the Royal Children's Hospital in Melbourne.
"Four cases have been linked to the NICU at the Royal Children's Hospital. The cases are two parents, one patient and a healthcare worker."
Local news outlets 9News and 7News reported the patient is the young baby.
The DHHS said they have begun contact tracing and will be testing potential close contracts for coronavirus.
"All babies, staff and parents, including any RCH staff who have spent more than two hours on Butterfly Ward since 12 July will be tested."
Victoria has been trying to manage a second outbreak of coronavirus with the state recording over 500 new cases on Monday.
Authorities have been struggling to find the origins of many cases with 378 still under investigation.
Residents have been asked to stay at home in the Melbourne metropolitan area, and anyone venturing outside is required to wear face masks.
"These restrictions are necessary because of the ongoing high number of cases we’re seeing," said Victoria's chief health officer Brett Sutton.
"If you live in these areas, there are only four reasons to leave your home: shopping for food and essential items, care and caregiving, daily exercise, and work and study - if you can't do it from home.
"These are tough measures, but this virus is not selective - it will impact anyone it encounters, and personal contact is the clear source of its transmission. We need everyone to do their part and ensure it is stopped in its tracks."
