Previous COVID-19 infection may offer 56% protection against catching Omicron

Embargoed until: Publicly released: 2022-02-10 09:00

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A study of COVID-19 patients in Qatar suggests that having previously had COVID-19 may offer 56 per cent protection against infection with the Omicron variant, 90.2 per cent protection against Alpha, 85.7 per cent against Beta, and 92 per cent against Delta. The effectiveness with respect to severe, critical, or fatal COVID-19 was estimated to be 87.8 per cent against Omicron, 69.4 per cent against Alpha, 88.0 per cent against Beta, and 100 per cent against Delta.

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Journal/
conference: New England Journal of Medicine

Research:Paper

Organisation/s: Weill Cornell Medicine–Qatar, Qatar

Funder: Biomedical Research Program and the Biostatistics, Epidemiology, and Biomathematics Research Core at Weill Cornell Medicine–Qatar; the Qatar Ministry of Public Health; Hamad Medical Corporation; and Sidra Medicine. The Qatar Genome Program and Qatar University Biomedical Research Center supported viral genome sequencing.

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