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Why the COVID-19 variants are so dangerous and how to stop them spreading

By Michael Plank, Professor in Applied Mathematics, University of Canterbury
Shaun Hendy, Professor of Physics, University of Auckland

With new, more infectious variants of COVID-19 detected around the world, and at New Zealand’s border, the risk of further level 3 or 4 lockdowns is increased if those viruses get into the community.

These include a variant called B.1.1.7 that has spread very quickly within the UK, with other new variants now observed in South…

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