Premier Gladys Berejiklian said one was from the Frenchs Forest suburb.
The new infections followed three locally transmitted cases in Sydney yesterday, including another two on the northern beaches.
Berejiklian today urged anyone in the area who feels ill to get tested.
“I encourage all people with the mildest symptoms on the northern beaches to get tested,” he said.
“We have seen an increase in testing overnight.
“We want to be aware of this and we do not want this to worry us in the last days before Christmas and we urge everyone to be as vigilant as ever.”
The Mona Vale Hospital clinic opened this morning, but the community is on high alert after the positive cases.
Hundreds of people are now being told to isolate themselves for 14 days, even if the test result is negative.
Now there will also be an anxious wait for possible border closures before the Christmas period.
Western Australian Prime Minister Mark McGowan has said the state’s hard border with New South Wales could return.
The recent Sydney cases could jeopardize thousands of vacation plans.
“If the advice comes that we have to establish a firm border, we will,” he said.
The couple visited various cafes and beaches over the weekend, NSW Health said.
All people living in the Northern Beaches area should monitor even the mildest symptoms and present for testing immediately if they appear, then isolate until a negative result is received, NSW Health said.
Dr. Danielle McMullen, president of the NSW AMA, said “we should be concerned.”
“I think we are all excited to have reached a long period of time without cases,” said Dr. McMullen.
“Now we have these two cases on the northern beaches with no clear source at this point, but I know the contact tracers are working hard trying to link that to any existing infection and the genomic sequences here are going to be really key to figuring out from where do these infections come from?
He urged people who have been identified as close contacts of the initial Northern Beaches couple to isolate themselves for 14 days, a difficult decision just eight days before Christmas.
“In Australia we are fortunate to be able to see family and friends during the holidays, but our strong advice is that if you have been to one of these places or a contact in a public health council says to stay at home, please do so. , “Dr. McMullen said.
“The last thing you want to do is give an infection to your family and friends.”
The cases have sparked new fears that the borders will be closed to Sydney residents.
“We are now more into the next 24 to 48 hours as to how big this outbreak is and making any decisions before that would be premature,” said Dr. McMullen.
The 45-year-old man drives international and other aircrews to and from Sydney airport.
The Northern Beaches couple who tested positive yesterday are not believed to be linked to the driver.
The bus driver’s case has sparked calls for international aircrews, and those connected to them must be forced to isolate themselves in a hotel.
“I think it is reasonable, from a medical point of view, these people are at a higher risk of contracting the infection, so it makes sense to us that they should isolate themselves when they are in Australian cities and ports of their international flights.” Dr. McMullen said.
“I hope the government is thinking carefully about its quarantine requirements at this time.”
COVID-19 ‘unlikely’ circulates quietly in New South Wales
Infectious disease expert and adviser to the World Health Organization Professor Mary-Louise McLaws said it was “probably unlikely” that COVID-19 was quietly circulating in New South Wales.
“That would take a lot of circulation and everyone would be pretty quiet because it’s been about 38 days, except for the case of the cleaner in a quarantine hotel,” Professor McLaws told Today.
“It’s a long time for cases to go quiet. So that’s probably unlikely.
“One of the other likely possibilities is that (the couple) know someone in a high-risk work environment and they have acquired it from them (like) hospitals where there may be COVID patients.
“They may have traveled between states, although there are very few infections between states. And then, of course, the other possibility is that they meet the flight crew who have returned home to quarantine.”
Professor McLaws urged people to “be sensible” in the days ahead, especially during Christmas shopping and holiday gatherings.
“We shouldn’t be too concerned because we have one of the best contact tracing teams in the world,” he said.
“But I’d really like to see all of your viewers this holiday season be sensible.
“If they have come into contact with (infected) people, stay home. Get tested. Wear a mask on public transportation.”