Increased risk of infection with SARS-CoV-2 Omicron compared to Delta in vaccinated and previously infected individuals, the Netherlands, 22 November to 19 December 2021
Keyword(s):
S Gene
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Infections by the Omicron SARS-CoV-2 variant are rapidly increasing worldwide. Among 70,983 infected individuals (age ≥ 12 years), we observed an increased risk of S-gene target failure, predictive of the Omicron variant, in fully vaccinated (odds ratio: 5.0; 95% confidence interval: 4.0-6.1) and previously infected individuals (OR: 4.9: 95% CI: 3.1-7.7) compared with infected naive individuals. This suggests a substantial decrease in protection from vaccine- or infection-induced immunity against SARS-CoV-2 infections caused by the Omicron variant compared with the Delta variant.
2021 ◽
Do Children Who Experience Laryngospasm Have an Increased Risk of Upper Respiratory Tract Infection?
1996 ◽
Vol 85
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pp. 475-480.
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2018 ◽
Vol 25
(1)
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pp. 81-90
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2019 ◽
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pp. 204800401986323
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2019 ◽
Vol 3
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pp. 2298-2306
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