Covid clustering: Herd immunity will be game of ‘whack-a-mole’ with outbreaks

Covid clustering: Herd immunity will be game of ‘whack-a-mole’ with outbreaks

Previous vaccination efforts suggest that uptake of Covid-19 vaccine will tend to cluster geographically, herd immunity experts explain. In the past, localised resistance to measles vaccination, for example, resulted in small pockets of disease resurgence. “Geographic clustering is going to make the path to herd immunity a lot less of...

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Coronavirus vaccine hesitancy starting to make ‘herd immunity’ a remote possibility

Coronavirus vaccine hesitancy starting to make ‘herd immunity’ a remote possibility

As Covid-19 vaccination rates pick up around the world, people have reasonably begun to ask: how much longer will this pandemic last? It’s an issue surrounded with uncertainties. But the once-popular idea that enough people will eventually gain immunity to Covid-19 to block most transmission – a ‘herd-immunity threshold’ –...

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