A person who works in two NSW COVID-19 quarantine hotels with overseas travellers and has already had their first-dose of the Pfizer vaccine, has come down with the virus. The positive result was recorded after 8 p.m. 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. There were no locally-acquired COVID-19 cases in the 24 hours to 8 p.m. on Saturday and three cases in travellers in hotel quarantine. Health Minister Brad Hazzard will address the media later on Sunday. 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,” …