Is omicron leading us closer to herd immunity against COVID?
Experts say it's not likely that the highly transmissible variant — or any other variant — will lead to herd immunity.is an elusive concept and doesn’t apply to coronavirus,” says Dr. Don Milton at the University of Maryland School of Public Health.
For example, herd immunity against measles requires about 95% of a community to be immune. Early hopes of herd immunity against the coronavirus faded for several reasons.One is that antibodies developed from available vaccines or previous infection dwindle with time. While vaccines offer strong protection against severe illness, waning antibodies mean it's still possible to get infected — even for those who are boosted.
As long as the virus spreads, it mutates — helping the virus survive and giving rise to new variants. Those mutants — such as omicron — can become better at evading the protection people have from vaccines or an earlier infection.
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