Clinical and Virological Features of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Variants of Concern: A Retrospective Cohort Study Comparing B.1.1.7 (Alpha), B.1.351 (Beta), and B.1.617.2 (Delta).

Clin Infect Dis · 2022 · PMC8522361 · PMID 34423834

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a significant trendno p-value reported

Large population studies have found a significant trend toward increased mortality associated with B.1.1.7 [ 10 , 11 ]; whereas for a cohort of hospitalized patients, no significant differences in disease severity and clinical outcomes were found compared with non-B.1.1.7–infected patients [ 12 ].

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