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Articles on COVID-19 variants

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New Zealand’s chief science advisor Dame Juliet Gerrard receiving her first vaccination dose. Hannah Peters/Getty Images

At least four in five New Zealanders will have to be vaccinated before border controls can be fully relaxed

New Zealand will have to vaccinate 80-85% to reach population immunity. Until then, a blanket border re-opening, even if only for vaccinated people, would pose a high risk of new outbreaks.
Federal officials have repeatedly touted Canada’s border measures during COVID-19 as among the most stringent in the world. THE CANADIAN PRESS/Ryan Remiorz

Canada needs to fix its border management now to prevent a fourth wave of COVID-19

Pressure is mounting to reopen the Canada-U.S. border, but there are risks. How well those risks are managed may be the difference between pandemic recovery or a fourth wave of COVID-19.
Luis Ascui/AAP

What’s the ‘Indian’ variant responsible for Victoria’s outbreak and how effective are vaccines against it?

The COVID-19 variant responsible for Victoria’s latest outbreak is one of three Indian variant sub-types, which spreads more easily than the original strain. Here’s what we know so far.
This giant effigy of the SARS-CoV-2 coronavirus is intended to be burned as part of the Holika Dahan, during which the demon Holika is led to the stake on the eve of the Holi celebrations, a popular Hindu festival. Sujit Jaiswal/AFP

RNA vaccines: what protection do they provide against Covid-19 variants?

One of the main fears regarding new SARS-CoV-2 variants is that they might be resistant to immunity granted by vaccines, including RNA vaccines.

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