Severe acute respiratory coronavirus virus 2 (SARS-CoV-2) outbreaks in nursing homes involving residents who had completed a primary coronavirus disease 2019 (COVID-19) vaccine series-13 US jurisdictions, July-November 2021.
W Wyatt WilsonAmelia A KeatonLucas G OchoaKelly M HatfieldPaige GableKelly A WalblayRichard A TeranMeghan SheaUrooj KhanGinger StringerJoanne G CollettiErin M GroganCarly CalabreseAndrew HennenfentRebecca PerlmutterKatherine A JaniszewskiIshrat Kamal-AhmedKyle StrandEmily BernsJennifer MacFarquharMeghan LinderDat J TranPatricia KoppRebecca M WalkerRebekah EssJennifer S ReadChelsey YingstJames BaggsJohn A JerniganAlex KallenJennifer C Hunternull nullPublished in: Infection control and hospital epidemiology (2023)
Among nursing home outbreaks of coronavirus disease 2019 (COVID-19) with ≥3 breakthrough infections when the predominant severe acute respiratory coronavirus virus 2 (SARS-CoV-2) variant circulating was the SARS-CoV-2 δ (delta) variant, fully vaccinated residents were 28% less likely to be infected than were unvaccinated residents. Once infected, they had approximately half the risk for all-cause hospitalization and all-cause death compared with unvaccinated infected residents.