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Since the first US case of coronavirus disease 2019 (COVID-19) infection as identified in Washington State on January 20, 2020, more than 235 000 cases have been identified across the US in just over 2 months. Given the challenges in expanding testing capacity and the restrictive case definition of persons under investigation, the true number of cases is likely much higher.
By March 17, the outbreak had expanded from several isolated clusters in Washington, New York, and California to all 50 states and the District of Columbia. As of April 2, there have been more than 5000 COVID-19–associated deaths in the US. With a global total now of more than 1 million cases, the US is now the country with the largest number of reported cases, comprising about one-fifth of all reported infections.
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Corresponding Author: Carlos del Rio, MD, Emory University School of Medicine, 49 Jesse Hill Jr Dr SE, FOB Room 201, Atlanta, GA 30303 (firstname.lastname@example.org).
Published Online: April 6, 2020. doi:10.1001/jama.2020.5788
Conflict of Interest Disclosures: Dr del Rio reported receiving grants from the National Institutes of Health/National Institute of Allergy and Infectious Diseases. No other disclosures were reported.
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