…Says Omicron less severe in young, old, but not ‘mild’
Severe COVID-19–associated outcomes and death were rare following primary vaccination, according to Dr. Christina Yek, with the National Institutes of Health and colleagues with the US Centres for Disease Control and Prevention COVID-19 Response Team.
The study published in the CDC’s Morbidity and Mortality Weekly Report stated that among 1.2 million adults who completed primary vaccination during December 2020 and October 2021, 2,246 developed COVID-19, and 189 had a severe outcome, including 36 who had a COVID-19–related death.
The findings are relevant to infections during periods of pre-Delta or the Delta variant and might not be applicable to the risk from the Omicron.
They however warned that people with immune dysfunction are at increased risk for COVID-19 breakthrough infection after vaccination, and should take additional precautions.
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