Coronavirus

Parts of Brazil may be close to reaching herd immunity

Experts, however, say that does not mean the country should abandon social isolation measures

Parts of Brazil may be close to reaching herd immunity
Photo: Lightspring/Shutterstock

“Herd immunity” has been one of these terms that the pandemic brought into our daily lives. In broad terms, it is achieved when the number of survivors with immunity against a given disease increases to a certain level, slowing down — and eventually stopping — the spread of the virus in question. It was believed that this stage would be reached for Covid-19 if 60 percent of a given population developed antibodies.

Some governments have tried to apply the herd immunity strategy, such as in Sweden or a famously short-lived attempt in the United Kingdom. But these moves, highly...

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