NSW Health has updated its advice for The Argyle House nightclub in Newcastle after further COVID-19 transmission at the venue.

So far, 24 people linked to the nightclub have tested positive to COVID-19. A number of these cases are likely to be the Omicron variant.

All 680 people who checked in using the QR code to attend the venue from 9pm, 8 December to 3am, 9 December have been assessed as close contacts and must immediately get tested and isolate for 7 days.

NSW Health is appealing for anyone who did not check in using the QR code to urgently get tested and isolate, and for the community to ensure other potential attendees are aware of this advice.

Given the high transmission of COVID-19 at the venue, we ask household contacts of anyone who attended to also immediately get tested and isolate until the close contact tests negative.

NSW Health is urging everyone of the importance of maintaining COVID-safe practices with transmission occurring at social events during the festive period.

Everyone should remain vigilant when celebrating with family, friends and colleagues and should not attend any social functions if they have any symptoms.

There are more than 450 COVID-19 testing locations across NSW, many of which are open seven days a week. To find your nearest clinic visit COVID-19 clinics or contact your GP.