In the 24 hours to 8pm on Tuesday, NSW recorded no new cases of locally-acquired COVID-19, as well as seven cases in hotel quarantine.
However, NSW Health Minister Brad Hazzard said on Wednesday that a locally-acquired case of COVID-19 was discovered after 8pm on Tuesday.
The case was diagnosed in a 45-year-old man who drove vans ferrying international air crew to and from Sydney Airport.
He was first symptomatic on Saturday but did not get tested until Tuesday afternoon.
He was confirmed virus-positive early on Wednesday morning.
"(This) highlights what I was talking about last week when I said that the NSW government's focus, as the virus seemed to be contained in terms of community transmission, our most exposed areas (were) principally around our borders," Mr Hazzard told reporters.
Obviously, we may be an island but we are not totally isolated from the pandemic that is raging across the world.