Speaking with Brown University’s Dr. Ashish K. Jha, the incoming dean at the School of Public Health, Dr. Anthony Fauci said the country needs to do one thing to avoid a catastrophe in the fall or winter. Addressing Arizona’s ability to flatten the curve of the massive outbreak that started in July, Fauci said that the same five or six “fundamental principles” of prevention apply everywhere. These are “universal wearing of a mask, physical distancing, avoid crowds, outdoor is better than indoors, wash your hands,” the director of the National Institute of Allergy and Infectious Diseases said. “Stay away from...