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NZ’s 9th COVID-19 wave: why infections are rising – and how booster shots still help

By Michael Plank, Professor in Applied Mathematics, University of Canterbury
Helen Petousis-Harris, Associate Professor in Vaccinology, University of Auckland, Waipapa Taumata Rau

COVID-19 hasn’t disappeared, but it’s no longer the health threat it was. Here’s what the latest wave means and who should get boosted.

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