Siouxsie Wiles & Toby Morris: How worried should we be about these new Covid-19 mutations?

The new Northland case has been linked to the South African strain of Covid-19, one of a number of new, more contagious Covid variants. Here’s how they emerge and why. Let’s start with the basics. The genetic material of the SARS-CoV-2 virus responsible for Covid-19 is a strand of RNA made up of

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