Dr Ashley Bloomfield comments on the cases of the new UK variant that have been found in New Zealand's managed isolation facilities. Video / Ministry of Health
The new Covid-19 variant that first emerged in the United Kingdom is set to become more prevalent across the world due to its more transmissible nature, an epidemiologist says.
Six cases of the recently identified UK variant have been found in New Zealand's managed isolation facilities over the past three days.
Professor Michael Baker said the new strain was always going to make its way here.
"It was inevitable - because once it becomes a dominant strain, like it has in the UK, people coming here will obviously bring it with them.
"This new variant will become dominant all over the world over the next couple of weeks and months because it's more infectious."
He said if there was community transmission with the new strain in New Zealand it would be harder to control.
Professor Michael Baker: "We really want to avoid going into a lockdown but that could easily happen if an outbreak happens with the new variant." Photo / Supplied
"We've seen figures that it is up to 50 to 70 per cent more infectious, that means a higher reproduction number which means it would be harder to contain an outbreak if one occurs.
"We really want to avoid going into a lockdown but that could easily happen if an outbreak happens with the new variant."
Pre-departure test move was inevitable - Prof Baker
Yesterday, the Government announced that from January 15 people travelling to New Zealand from the United States and the UK will need to show they've tested negative less than 72 hours before departing.
But many travellers were already taking pre-flight coronavirus tests as a requirement for some transit countries, Baker said.
The only main route from the UK to New Zealand which doesn't require a pre-departure test currently is through Doha, Qatar.
New Zealanders in the UK are not allowed to transit through Japan, China or Hong Kong, and currently need a negative test before transiting through Singapore.
Baker said the new requirement was an inevitable shift in policy.
"Almost all airline routes into New Zealand require testing before you travel through them so I'm not sure if this new requirement will change much for people trying to travel here," he said.
"We have several hundreds of people travelling here each day and lots are coming from countries where the pandemic is out of control and it might get more intense over the next couple of weeks."
A worker at a Covid-19 testing station in west Auckland in August 2020. Photo / Alex Burton
He said it made sense for the Government to constantly review standards at the border.
"Hopefully the pre-departure test will encourage people to take more precautions before they get on the flight - that would mean basically limiting your social contacts, wearing a mask and having a period of quarantine at home before you get on the plane to New Zealand.
"Every time an infected person gets on a plane they can infect others on the flight [and] staff at MIQ facilities. We have had border failures and they are driven by the number of infected people arriving here, so the more we can turn down that tap the better for New Zealand."
However, testing did not always pick up people in the early stages of infection, so positive cases could still arrive at the border, Baker said.
If you have symptoms of the coronavirus, call the NZ Covid-19 Healthline on 0800 358 5453 (+64 9 358 5453 for international SIMs) or call your GP - don't show up at a medical centre.
