Woolworths Newmarket employee tests positive to COVID-19 in Melbourne

A Woolworths store in Melbourne's inner north-west was closed overnight for deep cleaning after a staff member tested positive to coronavirus.

The Woolworths Newmarket store in Kensington reopened today, with contact tracing now underway.

9News understands the infected employee last worked at the store on July 31.

"We're making contact with our Newmarket team members and will provide our full support to those required to self-isolate in line with advice from the health authorities," a Woolworths statement read.

READ MORE: Your biggest stage four questions answered

"As a food retailer, we already have very high standards of cleaning and hygiene in place. As an extra precautionary measure, the store closed overnight for an additional deep clean."

The risk of transmission to customers and staff is "low", the supermarket giant confirmed. People can continue to safely shop and work at the store.

But anyone who shopped at the Newmarket store on July 31 who develops COVID-19 symptoms in the next two weeks should contact the Department of Health and Human Services (DHHS).  

READ MORE: What changes in Melbourne's stage four restrictions

The positive virus case comes as four other Melbourne stores were deep cleaned on Saturday night due to COVID-19 infections among staff, including Bundoora, Millers Junction in Altona North, Cranbourne East and Karingal Hub in Frankston.

There have been dozens of COVID-19 cases linked to Woolworths stores across Victoria in the past month.

Woolworths and Coles supermarkets in Melbourne will close by 7.45pm in line with the city's new lockdown curfew of 8pm.