Two Australian states on COVID-19 alert again

Authorities in New South Wales and Queensland are rushing to trace close contacts and locate virus hotspots. The couple may face criminal charges for breaching COVID-19 border restrictions.

The 44-year-old woman tested positive for COVID-19 once in Queensland, authorities said late on Wednesday, and her husband has since tested positive.

Queensland state Health Minister Yvette D'Ath told reporters in Brisbane on Thursday that the couple's tests suggested they were likely at the end of their infectious period.

"This means the risk is lower than we were expecting yesterday, which is really positive news," D'Ath said. No other cases were reported from the state.

Australia has largely contained all prior outbreaks through snap lockdowns, regional border controls and swift contact tracing, with just over 30,200 cases and 910 deaths since the pandemic began. It has reported zero cases most days this year.

Queensland authorities said they were investigating if the couple, who drove from Melbourne, had a travel exemption to enter the state, despite their home state of Victoria being under a hard lockdown.

Queensland has issued alerts for parts of Sunshine Coast, a popular tourist spot, and two regional areas.

NSW authorities said the pair traveled mostly through regional towns over five days last week.

NSW, the country's most populous state, has not reported any locally acquired cases of COVID-19 in more than a month, while Queensland last reported cases in late March.

On Thursday, Victoria reported four new locally acquired cases, versus one case a day earlier, taking the total infections in the latest outbreak to 90.

The new cases come as Melbourne prepares to come out of a two-week lockdown on Thursday night, although some curbs on travel and gatherings remain.

Thursday's cases are from the same household and investigations into the source are underway, Victorian authorities said.