Genomic Diversity of SARS-CoV-2 during Early Introduction into the Baltimore-Washington Metropolitan Area

Citation

Thielen, Peter M.; Wohl, Shirlee; Mehoke, Thomas; Ramakrishnan, Srividya; Kirsche, Melanie; Falade-Nwulia, Oluwaseun; Trovão, Nídia S.; Ernlund, Amanda; Howser, Craig; & Sadowski, Norah, et al. (2021). Genomic Diversity of SARS-CoV-2 during Early Introduction into the Baltimore-Washington Metropolitan Area. JCI Insight, 6(6), e144350. PMCID: PMC8026189

Abstract

The early COVID-19 pandemic was characterized by rapid global spread. In Maryland and Washington, DC, United States, more than 2500 cases were reported within 3 weeks of the first COVID-19 detection in March 2020. We aimed to use genomic sequencing to understand the initial spread of SARS-CoV-2 - the virus that causes COVID-19 - in the region. We analyzed 620 samples collected from the Johns Hopkins Health System during March 11-31, 2020, comprising 28.6% of the total cases in Maryland and Washington, DC. From these samples, we generated 114 complete viral genomes. Analysis of these genomes alongside a subsampling of over 1000 previously published sequences showed that the diversity in this region rivaled global SARS-CoV-2 genetic diversity at that time and that the sequences belong to all of the major globally circulating lineages, suggesting multiple introductions into the region. We also analyzed these regional SARS-CoV-2 genomes alongside detailed clinical metadata and found that clinically severe cases had viral genomes belonging to all major viral lineages. We conclude that efforts to control local spread of the virus were likely confounded by the number of introductions into the region early in the epidemic and the interconnectedness of the region as a whole.

URL

http://dx.doi.org/10.1172/jci.insight.144350

Reference Type

Journal Article

Year Published

2021

Journal Title

JCI Insight

Author(s)

Thielen, Peter M.
Wohl, Shirlee
Mehoke, Thomas
Ramakrishnan, Srividya
Kirsche, Melanie
Falade-Nwulia, Oluwaseun
Trovão, Nídia S.
Ernlund, Amanda
Howser, Craig
Sadowski, Norah
Morris, C. Paul
Hopkins, Mark
Schwartz, Matthew
Fan, Yunfan
Gniazdowski, Victoria
Lessler, Justin
Sauer, Lauren
Schatz, Michael C.
Evans, Jared D.
Ray, Stuart C.
Timp, Winston
Mostafa, Heba H.

Article Type

Regular

PMCID

PMC8026189

Continent/Country

United States of America

State

Maryland
Washington D.C.

ORCiD

Lessler - 0000-0002-9741-8109