A Taylor Swift-themed party in Sydney, Australia was revealed by authorities as a "superstreader event" after the health administrators issued an urgent warning due to the party being connected to about one hundred (100) COVID-19 cases.

The New South Wales Ministry of Health issued a public health alert on Thursday, December 16, saying:

"NSW Health has been notified of a new venue of concern in Sydney associated with at least 97 confirmed cases of COVID-19. It is likely some of these cases have the Omicron variant of concern.

Anyone who attended the 'On Repeat: Taylor Swift Red Party' at Metro Theatre (624 George Street, Sydney) from 9pm onwards on Friday 10 December is a close contact and must immediately get tested and isolate for 7 days.

NSW Health is asking all household contacts of close contacts to get tested and self-isolate until a negative result is received by everyone in the household.

NSW Health is urgently contacting 600 people who attended Metro Theatre at this time and checked in via the QR code and is directing them and members of their households to immediately get tested and follow public health advice.

NSW Health is appealing for anyone who attended but 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."

The health ministry also said that some of the cases identified may be the omicron variant. They are "urgently contacting" at least 600 people who checked into the event using a QR code.

There has been a surge in cases in New South Wales in recent days, from a 7-day average of 214 cases identified a day at the start of December to a 7-day average of 1,091 as of December 16, according to the Johns Hopkins University.