Covid 19 coronavirus: What you need to know about vaccines and herd immunity
It sounds simple. We roll the Covid-19 vaccine out to the public and enough of us become immune to stop the coronavirus causing any more big outbreaks. But, as University of Auckland vaccine experts Dr Helen Petousis-Harris and Dr Janine Paynter tell Jamie Morton, herd immunity isn’t always straightforward. We’ve been hearing much about “herd immunity” and how and when […]
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