The border ban was to have been lifted to those groups of travellers on Wednesday, but Chief Medical Officer Paul Kelly has advised that be paused until December 15.
“The temporary pause will ensure Australia can gather the information we need to better understand the Omicron variant, including the efficacy of the vaccine, the range of illness, including if it may generate more mild symptoms, and the level of transmission,” a statement from Prime Minister Scott Morrison’s office said late on Monday.
“The reopening to travellers from Japan and the Republic of Korea will also be paused until 15 December.”
Two fully vaccinated people who flew from southern Africa to Sydney were on Sunday confirmed to have the Omicron strain. They did not have any symptoms.
On Monday another two Sydney cases were confirmed – arrivals on a Singapore Airlines flight from southern Africa on Sunday.
Every other person who was on that flight is now a close contact who needs to get tested and isolate for 14 days immediately.
Separately, a man at the Northern Territory’s Howard Springs quarantine facility was diagnosed with the strain.
The move follows the government’s decision to ban the arrival of non-citizens from eight southern African nations.
South Australia has lifted its quarantine requirement from seven to 14 days for all international travellers, due to concerns about the Omicron variant.
Victoria, NSW and the ACT have a blanket 72-hour quarantine requirement for all international travellers.
Health Minister Greg Hunt stressed Australia was well prepared for Omicron and contracts with vaccine manufacturers covered changes for new variants.
“There are some heartening signs about what may turn out to be mild symptoms,” he told reporters in Canberra on Monday.
While the new strain appeared to be more transmissible, Kelly stressed there was no definite evidence vaccines were less effective against it.
“The information from South Africa is that it has replaced Delta as the major, possibly the only, virus circulating in that country quite quickly. So it is transmitting at least as well as Delta. That seems clear,” he said.
“Some reports out of South Africa are that it’s mostly mild. Other information we have is that hospitalisation rates are increasing.”
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