학술논문

Genomic surveillance reveals multiple introductions of SARS-CoV-2 into Northern California
Document Type
article
Source
Science. 369(6503)
Subject
Pneumonia
Lung
Infectious Diseases
Emerging Infectious Diseases
Vaccine Related
Pneumonia & Influenza
Prevention
Biodefense
Infection
Good Health and Well Being
Betacoronavirus
COVID-19
California
Coronavirus Infections
Epidemiological Monitoring
Genome
Viral
Humans
Pandemics
Phylogeny
Pneumonia
Viral
SARS-CoV-2
Sequence Alignment
Ships
Travel
Washington
General Science & Technology
Language
Abstract
The coronavirus disease 2019 (COVID-19) pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has spread globally, with >365,000 cases in California as of 17 July 2020. We investigated the genomic epidemiology of SARS-CoV-2 in Northern California from late January to mid-March 2020, using samples from 36 patients spanning nine counties and the Grand Princess cruise ship. Phylogenetic analyses revealed the cryptic introduction of at least seven different SARS-CoV-2 lineages into California, including epidemic WA1 strains associated with Washington state, with lack of a predominant lineage and limited transmission among communities. Lineages associated with outbreak clusters in two counties were defined by a single base substitution in the viral genome. These findings support contact tracing, social distancing, and travel restrictions to contain the spread of SARS-CoV-2 in California and other states.