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Effectiveness of mRNA BNT162b2 COVID-19 vaccine up to 6 months in a large integrated health system in the USA: a retrospective cohort study 被引量:7

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摘要 Background:Vaccine effectiveness studies have not differentiated the effect of the delta(B.1.617.2)variant and potential waning immunity in observed reductions in effectiveness against SARS-CoV-2 infections.We aimed to evaluate overall and variant-specific effectiveness of BNT162b2(tozinameran,Pfizer-BioNTech)against SARS-CoV-2 infections and COVID-19-related hospital admissions by time since vaccination among members of a large US health-care system.
作者 Sara Y Tartof
机构地区 不详
出处 《四川生理科学杂志》 2021年第8期1408-1408,共1页 Sichuan Journal of Physiological Sciences
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