NSW authorities have enhanced screening at Sydney Airport after New Zealand reported its first case of Covid-19 in the community in months.
The community case - a 56-year-old woman who lives south of Whangarei - was in managed isolation in the Pullman Hotel.
Between leaving the Pullman and Covid being confirmed on Saturday, the woman visited 28 places around Northland. Anyone there at the same time has been asked to get a test and to self-isolate until the results are known.
Australian health authorities urged New Zealanders travelling to Australia to check the list of associated venues and follow health advice if they have been identified as a contact of the case.