What Does Herd Immunity Look Like Now?
She said that combating COVID-19 requires different tactics for different populations.
For older populations and those at risk for severe illness,booster helps ensurethe best protection long-term.
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It’s really about immune protection, she said.
It’s not just everyone gets their primary series [of vaccines] and boom we’re done.
We need to show that a large population is really protected.
Countries with smaller populations may be more successful in rolling out mass vaccination campaigns.
It’s that heterogeneity in the landscape thats a huge challenge," he added.
How Will Waning Vaccine Efficacies Affect Herd Immunity?
Since vaccine efficacies can wane over time, booster doses are necessary to keep high-risk groups immune.
In Spain, booster shots are being administered to people aged 70 and above.
For the most recent updates on COVID-19, visit ourcoronavirus news page.
Kirby T.Has Spain reached herd immunity?The Lancet.2021 Nov. doi:10.1016/S2213-2600(21)00495-1.
Centers for Disease Control and Prevention.COVID-19 Vaccinations in the United States.
Aschwanden C.Five reasons why COVID herd immunity is probably impossible.Nature.
