National Party leader Christopher Luxon is "doing okay" after testing positive for COVID-19 on Monday night.
A spokesperson for his party told Newshub he is now isolating in his apartment in Wellington.
His deputy leader, Nicola Willis, wished him a speedy recovery and said she's standing in for him during Question Time in Parliament while he's away.
"He is doing okay, but COVID is something that we're encouraged to rest when we have [it] and to recover from and that's what he'll be doing," she told reporters on Tuesday.
Willis said Luxon started going "downhill pretty fast" following a press conference on Monday and began feeling foggy-headed. He then took a rapid antigen test, which returned a positive result.
She added she doesn't believe he was showing symptoms before that press conference.
Willis wasn't wearing a mask on Tuesday, but said some staff were because they were in a closed room with Luxon before he tested positive.
It's the second time Luxon has tested positive for COVID-19, with a previous infection in 2022.
Other politicians who have previously tested positive for COVID-19 include current Prime Minister Chris Hipkins, former Prime Minister Jacinda Ardern, Finance Minister Grant Robertson and Attorney-General David Parker.
On Monday, the Ministry of Health revealed there have been 11,544 new cases of COVID-19 reported in New Zealand over the past week. There have also been a further 12 deaths attributed to the virus.
