Previous COVID-19 Infection Less Protective Against Omicron
The immune response to COVID-19 helps protect against reinfection, but that protection is weaker against Omicron than it was against earlier variants of the coronavirus, according to new data. A previous SARS-CoV-2 infection protects against Omicron reinfection only 56% of the time, researchers found in a review of national data in Qatar. Having had COVID […]
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