Evidence map›Paper›PMID 33891875›Full record

ArticleCell2021

Early introductions and transmission of SARS-CoV-2 variant B.1.1.7 in the United States.

Tara Alpert, Anderson F Brito, Erica Lasek-Nesselquist, Jessica Rothman, Andrew L Valesano, Matthew J MacKay, Mary E Petrone, Mallery I Breban, Anne E Watkins, Chantal B F Vogels and 40 more

Abstract read
In one paragraph

Article in Cell, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 99 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
99citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

99 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  8. Tracing SARS-CoV-2 clusters across local scales using genomic data.Proceedings of the National Academy of Sciences of the United States of America · 2025
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39 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

50 authors.

Tara AlpertDepartment of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT 06510, USA.
Anderson F BritoDepartment of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT 06510, USA.
Erica Lasek-NesselquistWadsworth Center, New York State Department of Health, Albany, NY 12208, USA; Department of Biomedical Sciences, University at Albany, SUNY, Albany, NY 12222, USA.
Jessica RothmanDepartment of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT 06510, USA.
Andrew L ValesanoDepartment of Internal Medicine, Department of Microbiology and Immunology, University of Michigan, Ann Arbor, MI 48109, USA.
Matthew J MacKayTempus Labs, Chicago, IL 60654, USA.
Mary E PetroneDepartment of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT 06510, USA.
Mallery I BrebanDepartment of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT 06510, USA.
Anne E WatkinsDepartment of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT 06510, USA.
Chantal B F VogelsDepartment of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT 06510, USA.
Chaney C KalinichDepartment of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT 06510, USA.
Simon DellicourSpatial Epidemiology Lab (SpELL), Université Libre de Bruxelles, Bruxelles, Belgium; Laboratory of Clinical and Epidemiological Virology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium.
Alexis RussellWadsworth Center, New York State Department of Health, Albany, NY 12208, USA.
John P KellyWadsworth Center, New York State Department of Health, Albany, NY 12208, USA.
Matthew ShudtWadsworth Center, New York State Department of Health, Albany, NY 12208, USA; Department of Biomedical Sciences, University at Albany, SUNY, Albany, NY 12222, USA.
Jonathan PlitnickWadsworth Center, New York State Department of Health, Albany, NY 12208, USA; Department of Biomedical Sciences, University at Albany, SUNY, Albany, NY 12222, USA.
Erasmus SchneiderWadsworth Center, New York State Department of Health, Albany, NY 12208, USA; Department of Biomedical Sciences, University at Albany, SUNY, Albany, NY 12222, USA.
William J FitzsimmonsDepartment of Internal Medicine, Department of Microbiology and Immunology, University of Michigan, Ann Arbor, MI 48109, USA.
Gaurav KhullarTempus Labs, Chicago, IL 60654, USA.
Jessica MettiTempus Labs, Chicago, IL 60654, USA.
Joel T DudleyTempus Labs, Chicago, IL 60654, USA.
Megan NashTempus Labs, Chicago, IL 60654, USA.
Nike BeaubierTempus Labs, Chicago, IL 60654, USA.
Jianhui WangDepartment of Pathology, Yale University School of Medicine, New Haven, CT 06510, USA.
Chen LiuDepartment of Pathology, Yale University School of Medicine, New Haven, CT 06510, USA.
Pei HuiDepartment of Pathology, Yale University School of Medicine, New Haven, CT 06510, USA.
Anthony MuyombweConnecticut State Department of Public Health, Rocky Hill, CT 06067, USA.
Randy DowningConnecticut State Department of Public Health, Rocky Hill, CT 06067, USA.
Jafar RazeqConnecticut State Department of Public Health, Rocky Hill, CT 06067, USA.
Stephen M BartConnecticut State Department of Public Health, Rocky Hill, CT 06067, USA; Centers for Disease Control and Prevention, Atlanta, GA 30329, USA.
Ardath GrillsCenters for Disease Control and Prevention, Atlanta, GA 30329, USA.
Stephanie M MorrisonCenters for Disease Control and Prevention, Atlanta, GA 30329, USA.
Steven MurphyMurphy Medical Associates, Greenwich, CT 06830, USA.
Caleb NealMurphy Medical Associates, Greenwich, CT 06830, USA.
Eva LaszloMurphy Medical Associates, Greenwich, CT 06830, USA.
Hanna RennertDepartment of Pathology and Laboratory Medicine, New York Presbyterian Hospital-Weill Cornell Medicine, New York, NY 10021, USA.
Melissa CushingDepartment of Pathology and Laboratory Medicine, New York Presbyterian Hospital-Weill Cornell Medicine, New York, NY 10021, USA.
Lars WestbladeDepartment of Pathology and Laboratory Medicine, New York Presbyterian Hospital-Weill Cornell Medicine, New York, NY 10021, USA.
Priya VeluDepartment of Pathology and Laboratory Medicine, New York Presbyterian Hospital-Weill Cornell Medicine, New York, NY 10021, USA.
Arryn CraneyDepartment of Pathology and Laboratory Medicine, New York Presbyterian Hospital-Weill Cornell Medicine, New York, NY 10021, USA.
Lin CongDepartment of Pathology and Laboratory Medicine, New York Presbyterian Hospital-Weill Cornell Medicine, New York, NY 10021, USA.
David R PeaperDepartments of Laboratory Medicine and of Medicine, Yale School of Medicine, New Haven, CT 06510, USA.
Marie L LandryDepartments of Laboratory Medicine and of Medicine, Yale School of Medicine, New Haven, CT 06510, USA.
Peter W CookCenters for Disease Control and Prevention, Atlanta, GA 30329, USA.
Joseph R FauverDepartment of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT 06510, USA.
Christopher E MasonTempus Labs, Chicago, IL 60654, USA; Department of Pathology and Laboratory Medicine, New York Presbyterian Hospital-Weill Cornell Medicine, New York, NY 10021, USA.
Adam S LauringDepartment of Internal Medicine, Department of Microbiology and Immunology, University of Michigan, Ann Arbor, MI 48109, USA.
Kirsten St GeorgeWadsworth Center, New York State Department of Health, Albany, NY 12208, USA; Department of Biomedical Sciences, University at Albany, SUNY, Albany, NY 12222, USA. Electronic address: kirsten.st.george@health.ny.gov.
Duncan R MacCannellCenters for Disease Control and Prevention, Atlanta, GA 30329, USA. Electronic address: fms2@cdc.gov.
Nathan D GrubaughDepartment of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT 06510, USA; Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT 06510, USA. Electronic address: nathan.grubaugh@yale.edu.

Funding

Yale Clinical and Translational Science Award (U Component)UL1TR001863 · NCATS · YALE UNIVERSITY · PI John H. Krystal, LUCILA OHNO-MACHADO · 2016 to 2026
$102.9M
MICHIGAN MEDICAL SCIENTIST TRAINING PROGRAMT32GM007863 · NIGMS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI COLLINS, KATHLEEN L. · 1985 to 2024
$38.3M
NRSA Training CoreTL1TR001864 · NCATS · YALE UNIVERSITY · PI CANTLEY, LLOYD G, EDELMAN, E. JENNIFER · 2016 to 2025
$9.9M
Short-Term Reserch Training: Students in Health SchoolsT35HL007649 · NHLBI · YALE UNIVERSITY · PI Sarwat I Chaudhry, Erica L Herzog · 1987 to 2026
$5.7M
NCATS NIH HHS TL1 TR001864NCATS NIH HHS UL1 TR001863NHLBI NIH HHS T35 HL007649NIGMS NIH HHS T32 GM007863
6 · The paper itself

Abstract

The emergence and spread of SARS-CoV-2 lineage B.1.1.7, first detected in the United Kingdom, has become a global public health concern because of its increased transmissibility. Over 2,500 COVID-19 cases associated with this variant have been detected in the United States (US) since December 2020, but the extent of establishment is relatively unknown. Using travel, genomic, and diagnostic data, we highlight that the primary ports of entry for B.1.1.7 in the US were in New York, California, and Florida. Furthermore, we found evidence for many independent B.1.1.7 establishments starting in early December 2020, followed by interstate spread by the end of the month. Finally, we project that B.1.1.7 will be the dominant lineage in many states by mid- to late March. Thus, genomic surveillance for B.1.1.7 and other variants urgently needs to be enhanced to better inform the public health response.

Indexed as

COVID-19COVID-19 TestingModels, BiologicalSARS-CoV-2FemaleHumansMaleUnited StatesB.1.1.7community transmissionepidemiologyflight volumesgenomic surveillanceintroductionslineagephylogeneticsSARS-CoV-2variant

Identifiers

PMID33891875
PMCPMC8018830

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.