Omicron’s mutations impaired vaccine effectiveness, CDC says
Almost 40% of people hospitalized in the U.S. with the COVID-19 subvariant that circulated this spring were vaccinated and boosted, highlighting how new strains have mutated to more readily escape the immunity offered by current shots.
The findings from scientists at the U.S. Centers for Disease Control and Prevention underscore the importance of having COVID-19 shots that are better at targeting omicron subvariants.
