WASHINGTON, Dec. 17, 2020 People walk on the National Mall in Washington, D.C., the United States, on Dec. 17, 2020. The total number of COVID-19 cases in the United States topped 17 million on Thursday, according to the Center for Systems Science and Engineering (CSSE) at Johns Hopkins University. U.S. COVID-19 case count rose to 17,000,408, with a total of 307,770 deaths, as of 10:27 a.m. local time (1527 GMT), according to the CSSE tally. (Photo by Ting Shen/Xinhua) (Credit Image: © Liu Jie/Ting Shen/Xinhua via ZUMA Press)