Increased Household Secondary Attacks Rates With Variant of Concern Severe Acute Respiratory Syndrome Coronavirus 2 Index Cases.
retrospective_cohort · Level III
Where this comes from
- Record sourced from PubMed, PMID 34105720.
- Also identified by DOI 10.1093/cid/ciab496 and PMC identifier 8384411.
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Abstract
We compared secondary attack rates in households with B.1.1.7 variant of concern (VOC) versus non-VOC index cases in a matched cohort in Ontario, Canada. The secondary attack rate for VOC index cases was 1.31 times higher than non-VOC index cases. This increase was particularly accentuated for asymptomatic or presymptomatic index cases.
Medical subject headings
- COVID-19
- SARS-CoV-2