Australia PM Scott Morrison

The testing was prompted following a positive PCR test done on PM Morrison after the meeting.

President Aingimea took a Covid-19 rapid antigen test returning a negative result, and then later took a second test using a Panbio antigen test.

The Panbio test kit is currently used in Nauru which the Nauru Covid-19 Taskforce confirms has a 98 per cent sensitivity rate.

However, President Aingimea is taking extra precautions and was due to do a PCR test yesterday.

PCR testing is the gold standard for detecting Covid-19 in the community.

Eight years ago, New Zealand offered to resettle 150 refugees a year from Australia's offshore detention system.

Williams is urging Morrison to finally accept the offer.

"I think 250 people or close to, have been left in Papua New Guinea and in Nauru that can be brought to have a better life.

"They've been stuck for the last eight years. We can't even do it for two weeks in quarantine, imagine doing it for eight years."

He told Morning Report that New Zealand needed to understand the meaning of refugees.

Brittany Higgins said she had feared losing her job after the 2019 incident, and had little support from her bosses.

Ms Higgins, 26, gave a TV interview on Monday that has prompted shock and outrage over her treatment.

Mr Morrison apologised for the way Ms Higgins' complaint was handled.

The allegations are now under a renewed police investigation.

Mr Morrison said he was "shattered" by her claims, and had called for a review into parliament's environment and culture.

The PM has faced mounting criticism over his government's response to the bushfires and its climate policy.

Since September, bushfires have killed at least 28 people and destroyed thousands of homes.

On Sunday, Mr Morrison conceded there were "things I could have handled on the ground much better".

In recent weeks, Mr Morrison has been heckled by locals when visiting fire-hit communities in the states of New South Wales and Victoria, where the worst blazes are concentrated.

The Nauru government is hosting this year's leaders' summit next week.

Australia's incoming Foreign Affairs Minister, Marise Payne, has told Sky News she will be attending the Forum as her first international engagement.

The former Defence Minister said she has already spent time in the Pacific and the region is an area of some priority for her.

Ms Payne, who replaces Julie Bishop, said she is looking forward to meeting with the leaders.