

Of the 53 patients whose data were analyzed, 22 were in the United States, 22 in Europe or Canada, and 9 in Japan. Of the 61 patients who received at least one dose of remdesivir, data from 8 could not be analyzed (including 7 patients with no post-treatment data and 1 with a dosing error). This report is based on data from patients who received remdesivir during the period from January 25, 2020, through March 7, 2020, and have clinical data for at least 1 subsequent day. Patients received a 10-day course of remdesivir, consisting of 200 mg administered intravenously on day 1, followed by 100 mg daily for the remaining 9 days of treatment. Patients were those with confirmed SARS-CoV-2 infection who had an oxygen saturation of 94% or less while they were breathing ambient air or who were receiving oxygen support. We provided remdesivir on a compassionate-use basis to patients hospitalized with Covid-19, the illness caused by infection with SARS-CoV-2. Remdesivir, a nucleotide analogue prodrug that inhibits viral RNA polymerases, has shown in vitro activity against SARS-CoV-2. Public Health Service Commissioned Corps, Washington, DC (R.C.) and Miriam Hospital, Providence, RI (T. Chen) Columbia University Irving Medical Center, New York (J.C.) Hospital Universitario La Paz-Carlos III, Instituto de Investigación Hospital Universitario La Paz, Madrid (M.M.-R.) Bernhoven Hospital, Uden, the Netherlands (E.V.) Kaiser Franz Josef Hospital, Vienna (A.Z.) the U.S.

Alexius Medical Center, Hoffman Estates, IL (S.A.) Mackenzie Health, Richmond Hill, ON, Canada (D. Feldt) Université de Paris, Infection, Antimicrobiens, Modélisation, Evolution (IAME), INSERM, and Assistance Publique-Hôpitaux de Paris, Department of Infectious Diseases, Bichat Hospital, Paris (F.-X.L.), Centre Hospitalier Régional et Universitaire de Brest-La Cavale Blanche, Brest (E.L.), and Division of Infectious Diseases and Tropical Medicine, University Hospital of Bordeaux, Bordeaux (D.N.) - all in France St. Spallanzani, Rome (E.N.), Università degli Study of Brescia, ASST Civili di Brescia, Brescia (E.Q.-R.), San Gerardo Hospital, ASST Monza, University of Milan-Bicocca, Monza (G.L.), and Azienda Unite Sanitarie Locali-IRCCS, Reggio Emilia (M.M.) - all in Italy Universitätsklinikum Düsseldorf, Düsseldorf, Germany (T. Castagna) and Azienda Socio Sanitaria Territoriale Spedali (ASST) Santi Paolo e Carlo, Department of Health Services, University of Milan (A.D.M.), Milan, National Institute for Infectious Diseases, IRCCS, L. Chihara), Seattle - all in Washington Fondazione IRCCS Policlinico San Matteo, Pavia (E.A.), IRCCS, San Raffaele Scientific Institute (A. Timbs, I.H., S.S., H.C., S.K.T., L.W., P.D., R.M., A.G., R.P.M., D.M.B.) - all in California the National Center for Global Health and Medicine, Tokyo (N.O.), Tokyo Bay Urayasu Ichikawa Medical Center, Urayasu City (R.O.), Hiratsuka City Hospital, Hiratsuka (K.Y.), Yokohama City University Hospital, Yokohama (H.K.), Gunma University Hospital, Gunma (T.M.), and Tosei General Hospital, Seto (Y.M.) - all in Japan Providence Regional Medical Center Everett, Everett (G.D.), and University of Washington Medical Center-Northwest (M.L.G.) and Virginia Mason Medical Center (S. Chelliah), Sutter Santa Rosa Regional Hospital, Santa Rosa (G.G.), Regional Medical Center (A.S., J.R.) and Good Samaritan Hospital (S.M.), San Jose, John Muir Health, Walnut Creek (J.B.), UC Davis Health, Sacramento (S.H.C.), NorthBay Medical Center, Fairfield (S.I.), and Gilead Sciences, Foster City (A.O.O., A.D., Y.Z., L.Z., A. 1 From Cedars-Sinai Medical Center, Los Angeles (J.G.), El Camino Hospital, Mountain View (D.S., D.
