Percent infected by 25 50 75% No control measures Some control measures Severe control measures Three scenarios for how the outbreak could spread. How Control Measures Could Slow the Outbreak New cases per day No control measures 500K 400K Some control measures 300K 200K The U.S. is now reporting thousands of cases per day. 100K Severe control measures 2/21 3/22 4/21 5/21 6/20 7/20 New cases per day No control measures 500K 400K Some control measures 300K 200K The U.S. is now reporting thousands of cases per day. Severe control measures The outbreak could be limited in areas that do not now have large numbers of known cases. Severe control measures The outbreak could be limited in areas that do not now have large numbers of known cases.

Source: New York Times March 20, 2020 19:52 UTC