People who had previously caught the coronavirus, which is similar to having an additional vaccine dose, had more neutralising antibodies against COVID variants after being vaccinated.
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The Brazilian president has engineered the conditions for the virus to run rampant through the country while he pursues his own agenda.
Multiple COVID-19 variants are circulating around the world and becoming more common. These mutations can alter the ability of the virus to take hold and replicate within our cells.


