Two new COVID-19 cases have been recorded in Victoria, linked to the member's reserve at the MCG

The Herald Sun and ABC are both reporting a snap lockdown will be announced later this afternoon.

EARLIER:

Victoria has recorded two new positive COVID-19 cases, both linked to the member's reserve at the MCG. One of the cases is a child and one is an adult. The cases are not believed to be known to each other.

Testing commander Jeroen Weimar said those cases were in addition to the 10 reported in the past 24 hours (seven of which he reported yesterday).

"In the last couple of hours, we have identified a further two cases - two positive cases, both from the extensive testing done around the member's reserve at the MCG on tier two - level two of the MCC members reserve," Mr Weimar said.

"One is likely to be a tier one contact and one is likely to be a tier two contact ... the man in his 60s who was at the football game, who was the positive case, unbeknownst to himself went to the Geelong v Carlton game, sat at level two, in the member's reserve.

"There's 2000 people in that block, they are all tier two contacts. In addition, 23 people were identified as likely tier one, because they sat in close proximity. We asked all tier one and tier two to get tested as a matter of urgency."

Mr Weimar said the two new cases were concerning as transmission up to this point had been between people who had spent significant time together, whereas the new cases were likely stranger-to-stranger and sitting in different parts of the ground.

"I think both these cases put us in a serious situation. The situation we're dealing with when we stood here 24-hours-ago was all the contact at the point, up to that point, had been between people who spent significant time together, known to each other," he said.

"Again, the interviews are ongoing. Our initial information is that the two new cases we have today are not known to the gentleman from the Ariele Apartments. That gives us significant cause for concern."

But Mr Weimar said he was confident contact tracers would be able to reach all new contacts, based on the QR code and ticketing systems.

"I'm very confident we have managed to get hold of people, unless their phone is dead and they're living under a rock," he said.

"So I'm confident around that. I think we've got a good response yesterday. I'll have a better sense during the course of the evening how the results are coming in. Our testing system is delivering all those results, 99 plus per cent of the time within a day. 95 per cent within 24 hours. The picture will build very rapidly."

Mr Weimar said the outbreak was moving more quickly than any outbreak they'd seen. He said there were currently 16 cases total associated with two strains of transmission (the Hume family and the removalists) and 1500 primary close contacts.

Five cases are linked to the Hume cluster - the family of four and one person from Coles. Six cases are linked to the NSW removalists who attended the Ariele apartment complex. Four are from the apartments themselves, two are parents of a positive case.

There are three cases around the MCG/Barwon cluster - a man who spent the day at the football with a positive case from the apartments. He has tested positive as has a nine-year-old and man in his 60s in his household.

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