NSW has reached a record 32 days without a single case of COVID-19 being recorded in the community.
NSW Health's Jeremy McAnulty says not a single case was detected in the state - either in the community or in returned travellers - in the 20,906 tests conducted in the 24-hours to 8pm on Wednesday.
"We would like to thank the community for getting tested and being vigilant with social distancing and mask-wearing," Dr McAnulty said on Thursday.
However he warned that as there were cases of COVID-19 in Victoria and New Zealand, as well as regular cases among returning international arrivals to NSW, "the risk of an incursion into the NSW community is ever present".
"It is critical that everyone continues to practice COVID-safe behaviours, as well as continuing to wear masks on public transport," he said.
Meanwhile, people arriving in NSW from Victoria no longer need to isolate, following the end of Victoria's five-day lockdown.
Even so, those who attended any exposure sites in Victoria in the past 14 days should follow relevant advice on the website.
People arriving by plane and train from Victoria also need to fill out a declaration regarding the venues of concern.