The rapid increase in the number of infections is the most obvious reason why new variants of the virus have been emerging recently. Case numbers doubled in just two months at the end of 2020.
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ESR
ESR is New Zealand’s Crown Research Institute specialising in science for communities. ESR uses world-leading science to safeguard our health, keep our communities safer, protect our food-based economy, and improve the health of our water and natural environment.
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