Population immunity to pre-Omicron and Omicron SARS-CoV-2 variants in US states and counties through December 1, 2021.

Fayette KlaassenMelanie H ChitwoodTed CohenVirginia E PitzerMarcus RussiNicole A SwartwoodJoshua A SalomonNicolas A Menzies

Published in: Clinical infectious diseases : an official publication of the Infectious Diseases Society of America (2022)

While over four-fifths of the US population had prior immunological exposure to SARS-CoV-2 via vaccination or infection on December 1, 2021, only a fifth of the population was estimated to have effective protection against infection with the immune-evading Omicron variant.

Keyphrases

sars cov
respiratory syndrome coronavirus
gene expression
copy number
coronavirus disease