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People have meals at an outdoor dining area in New York, the United States, Dec. 21, 2020. The total number of COVID-19 cases in the United States topped 18 million on Monday, according to the Center for Systems Science and Engineering (CSSE) at Johns Hopkins University. U.S. COVID-19 case count rose to 18,006,061, with a total of 319,190 deaths, as of 6:22 p.m. local time (2322 GMT), according to the CSSE tally. (Xinhua/Wang Ying)