Vaccine effectiveness against symptomatic disease caused by the Omicron and Delta variants in England - News-Medical.Net

The researchers aimed to estimate how effective vaccination was against severe COVID-19, caused by Omicron and Delta variants of the virus, in England.

The rapid and inexorable spread of the coronavirus disease 2019 (COVID-19) pandemic led to the intensive research effort to bring out safe and effective vaccines against the causative agent, the seve… [+6402 chars]

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