Changes in population immunity against infection and severe disease from SARS-CoV-2 Omicron variants in the United States between December 2021 and November 2022.
Fayette KlaassenMelanie H ChitwoodTed CohenVirginia E PitzerMarcus RussiNicole A SwartwoodJoshua A SalomonNicolas A MenziesPublished in: medRxiv : the preprint server for health sciences (2022)
As most of the newly acquired immunity has been accumulated in the December 2021-February 2022 Omicron wave, risk of reinfection and subsequent severe disease remains present at the beginning of the 2022-2023 winter, despite high levels of protection.