Article

Secondary attack rates of SARS-CoV-2 alpha and delta variants in Japan

2022-04-21

Abstract excerpt

<h4>Backgrounds: </h4>This study analysed secondary attack rates (SARs), comparing alpha variants, delta variants and non-variants of concern (non-VOCs), using clinical and close-contact tracing data.MethodsWe analysed coronavirus disease 2019 (COVID-19) case data from a database and contact tracing data between July and October 2020 (Cohort 1) and April 2021 (Cohort 2) and between July and August 2021 (Cohort 3)...

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Literature Corpus work: c33eba9b-df76-51bf-92b9-f001dd7346b3
DOI: 10.21203/rs.3.rs-1472063/v1

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