It was open to Immigration Minister Alex Hawke to infer that Novak Djokovic had refused to get vaccinated and that his presence in Australia might "foster anti-vaccination sentiment", the Federal Court says.

A woman has been released by police without charge after the body of a baby boy was found at a home in southern NSW.

Australian and New Zealand planes carrying humanitarian aid have landed in Tonga after volcanic ash was cleared from an airport runway.

Australia's unemployment rate unexpectedly dropped to 4.2 per cent in December, its lowest level since August 2008 and sparking speculation of a rise in the official cash rate later this year.

Prospective parents are rejoicing at the Victorian government's decision to reverse a ban on most IVF treatments during the escalating Omicron coronavirus wave.

The first two oral treatments for COVID-19 have been approved for use in Australia by the country's medical regulator.

UK Prime Minister Boris Johnson, fighting to save his premiership amid a storm over a series of lockdown parties in Downing Street, has told parliament he will not resign.

Two New Zealand navy vessels will arrive in Tonga on Friday carrying critical water supplies for the Pacific island nation reeling from a volcanic eruption and tsunami.

Prime Minister Scott Morrison has urged businesses not to enforce rules requiring employees to return a negative rapid antigen test each day before they start work.

Victorians can now get their COVID-19 booster shot sooner, with the government shortening the interval between second and third doses to three months at all state hubs.