Variant

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Estudos sinalizam que nova variante do coronavírus tem poder de escapar de anticorpos produzidos pela vacinação, mas que a proteção conta formas mais graves da doença persiste. ...
The companies did not release the full preliminary data that led to their findings, opting instead to only issue a press release. ...
Pfizer has released date showing its booster dose of Covid-19 vaccine appears to protect against the omicron variant. NBC's Sam Brock has details. ...
Pfizer CEO Albert Bourla said a fourth dose of the COVID-19 vaccine may be needed sooner than expected because of the Omicron variant. Bourla previously projected that a fourth shot might be needed 12 months after the third dose. However, he announced on Wednesday that the Omicron variant could acce... ...

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