A population-based study in Qatar showed previous infection provided robust protection against reinfection with the alpha, beta, and delta variants of SARS-CoV-2 (approximately 90%). However, protection against reinfection with the omicron variant was lower (around 60%).
10 Feb, 2022 | 10:04h | UTC
Commentary on Twitter
Using a national database in Qatar, investigators found that previous #SARSCoV2 infection provided protection against reinfection that ranged from 85% to 92% for alpha, beta, and delta strains and was approx 60% protective against omicron. #COVID19 https://t.co/SGODYCmkP3 pic.twitter.com/OkgjCbyZBj
— NEJM (@NEJM) February 9, 2022