The National Party is distancing itself from a former MP who has shared anti-vaccination opinions in a lengthy video that has since been labelled dangerous.
Matt King was voted out as Northland MP last election after serving one term and has been a vocal critic of the government's Covid-19 response in recent months.
Last week he hosted a 40-minute conversation on Facebook with University of Auckland epidemiologist Simon Thornley, during which the pair discussed ideas common in anti-vax groups.
Their claims, and the video in general, are being rubbished by Thornley's fellow University of Auckland epidemiologist, Professor Rod Jackson.
"There is no trial evidence that Ivermectin works in people with Covid - it doesn't exist. There are trials going on, which is appropriate, but there is no trial evidence," he told Checkpoint.
"None of the medications - even ones where there's good evidence - are going to be the ones to stop Covid. You have to stop Covid outbreaks because even if you've got some great medicines, you'll still fill up your hospitals with sick people - as we see all around the world."
Professor Jackson also said it claiming Covid-19 was no worse than the flu was nonsense, and that comments around the vaccine affecting transmission were irrelevant, as the shots significantly reduce the chance of infection.
"This is typical of Simon and typical of many of the people who are against vaccination, and against the New Zealand approach to addressing Covid," he said.
"They pull out little bits of largely irrelevant information and don't look at the whole context."
Professor Jackson said it was dangerous for Matt King to be highlighting those claims, when Thornley is an outlier in his field and the only academic public health doctor in New Zealand who holds such views.
"This is a severe disease and we have a evidence-based treatment where there is definitive evidence that it reduces the risk of severe disease and death by 95 percent, in that order.
"And we have someone who is questioning that evidence, who doesn't know what they're talking about, talking to an epidemiologist who doesn't know what he's talking about. I think it's dangerous, because people could die."
Northland has some of the lowest vaccination rates in the country, and misinformation is proving to be a massive challenge in getting some people across the line.
Approximately 72 percent of Northlanders are fully vaccinated; 83 percent have had their first dose.
Matt King's video has been viewed more than 56,000 times. In the comments section he encourages people to share it far and wide.
The National Party will not say whether King is still a member and they have not confirmed who their candidate will be for the region in the next election.
Leader Judith Collins will not say whether she has spoken to King about his views.
"Obviously I don't discuss publicly any private conversations I have with people but I'm making this really clear... the National Party supports vaccinations, we have been absolutely robust in this and that Matt is not speaking for us on it," she said.
King did not respond to Checkpoint's request for comment. The University of Auckland declined to comment.