What question did this study set out to answer?

To characterize the early introduction, genetic diversity, and transmission dynamics of SARS-CoV-2 in a major metropolitan area using whole-genome sequencing.

March 21, 2021JCI InsightOpen Access

Genomic diversity of SARS-CoV-2 during early introduction into the Baltimore–Washington metropolitan area

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Authors

PTPeter ThielenJohns Hopkins University Applied Physics Laboratory SWShirlee WohlBrigham and Women's Hospital TMThomas MehokeJohns Hopkins University Applied Physics Laboratory

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Implication

Genomic surveillance study uncovers high viral diversity across clinical samples, indicating multiple early introductions confounded regional epidemic containment.

Key Points

To characterize the early introduction, genetic diversity, and transmission dynamics of SARS-CoV-2 in a major metropolitan area using whole-genome sequencing.
Analyzed 620 respiratory samples collected from the Johns Hopkins Health System between March 11 and March 31, 2020, representing 28.6% of early regional cases.
Generated 114 complete SARS-CoV-2 genomes and performed phylogenetic comparison against a subsample of over 1,000 published global sequences.
Integrated regional genomic data with detailed patient clinical metadata to assess associations with disease severity.
Sequenced genomes spanned all major globally circulating lineages, displaying genetic diversity that rivaled total global SARS-CoV-2 diversity at the time.
Multiple independent viral introductions into the region occurred rapidly within three weeks of initial local detection.
Clinically severe COVID-19 cases were distributed across all identified viral lineages rather than clustered within a specific strain.

Cite This Study

Thielen et al. (2021) studied this question.

synapsesocial.com/papers/6aaa3dca26be215b5232a0df https://doi.org/10.1172/jci.insight.144350

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Implication

Genomic surveillance study uncovers high viral diversity across clinical samples, indicating multiple early introductions confounded regional epidemic containment.

Genomic diversity of SARS-CoV-2 during early introduction into the Baltimore–Washington metropolitan area

Discussion

Member takes

Implication

Key Points

Cite This Study

Genomic diversity of SARS-CoV-2 during early introduction into the Baltimore–Washington metropolitan area

Discussion

Member takes

Implication

Key Points

Cite This Study

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