By the numbers: The U.S. averaged roughly 16,500 new cases per day over the past week, a 30% improvement over the week before. New cases declined in 43 states and held steady in the other seven. The official case counts haven’t been this low since Americans went into lockdown in March last year — when the pandemic was still new, no one knew how long this would go on, and inadequate testing meant that cases were undercounted... New York, which bore the brunt of the virus’ arrival in the U.S., is now averaging about 800 new cases per day, in a state of some 20 million people. Washington, D.C. has about 28 new cases per day.