A person who works in two NSW COVID-19 quarantine hotels and has already had their first-dose of the Pfizer vaccine, has come down with the virus.
The positive result was recorded after 8pm on Saturday, meaning the state’s virus-free run will end at 56 days.
NSW Health said in a statement the source of the Sydney worker’s infection remains unclear and testing of their close contacts is underway.
Prime Minister Scott Morrison on Sunday told reporters the hotel quarantine worker had received their first dose of the Pfizer vaccine.
“There are no risk-free responses when you deal with COVID-19, it is unrealistic and naive to think so … there are always vulnerabilities,” Mr Morrison said.
Chief Medical Officer Paul Kelly said there was a time lag between receiving the vaccine and its protection kicking in, particularly with the Pfizer jab.
“This is not a silver bullet that will fix everything right away,” Prof Kelly said.
“There will still be outbreaks, even as we go through this vaccination program.”