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Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, testifies before the U.S. Senate Committee on Health, Education, Labor and Pensions on COVID-19: Update on Progress Toward Safely Getting Back to Work and Back to School in Washington, D.C., the United States, on June 30, 2020. Anthony Fauci, the U.S. government's top infectious-diseases expert, warned Tuesday that COVID-19 cases in the United States could go up to 100,000 per day if the current trend "does not turn around." (Kevin Dietsch/Pool via Xinhua)