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Increased risk of severe COVID-19 in hospitalized patients with SARS-CoV-2 Alpha variant infection: a multicentre matched cohort study

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34Institutions déclarées
2Pays d’affiliation déclarés

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BACKGROUND: The impact of the variant of concern (VOC) Alpha on the severity of COVID-19 has been debated. We report our analysis in France. METHODS: We conducted an exposed/unexposed cohort study with retrospective data collection, comparing patients infected by VOC Alpha to contemporaneous patients infected by historical lineages. Participants were matched on age (± 2.5 years), sex and region of hospitalization. The primary endpoint was the proportion of hospitalized participants with severe COVID-19, defined as a WHO-scale > 5 or by the need of a non-rebreather mask, occurring up to day 29 after admission. We used a logistic regression model stratified on each matched pair and accounting for factors known to be associated with the severity of the disease. RESULTS: We included 650 pairs of patients hospitalized between Jan 1, 2021, and Feb 28, 2021, in 47 hospitals. Median age was 70 years and 61.3% of participants were male. The proportion of participants with comorbidities was high in both groups (85.0% vs 90%, p = 0.004). Infection by VOC Alpha was associated with a higher odds of severe COVID-19 (41.7% vs 38.5%-aOR = 1.33 95% CI [1.03-1.72]). CONCLUSION: Infection by the VOC Alpha was associated with a higher odds of severe COVID-19.

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DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.

Titre Crossref
Increased risk of severe COVID-19 in hospitalized patients with SARS-CoV-2 Alpha variant infection: a multicentre matched cohort study
Date Crossref
13/06/2022
Éditeur
Springer Science and Business Media LLC
Type
journal-article

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Institutions déclarées

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Sujets associés

COVID-19 Clinical Research StudiesLong-Term Effects of COVID-19SARS-CoV-2 and COVID-19 Research

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