NEW YORK, Dec. 21 (Xinhua) -- The number of COVID-19 cases in the United States surpassed 18 million on Monday, according to the Center for Systems Science and Engineering 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.
California reported the most cases, standing at 1,907,483, followed by Texas with 1,602,988 cases and Florida with 1,212,581 cases. Illinois registered 905,069 cases and New York identified 857,049 cases.
Other states with over 500,000 cases include Ohio, Georgia, Pennsylvania, Tennessee and Michigan, the CSSE data showed.
By far, the United States remains the nation worst hit by the pandemic, with the world's largest caseload and death toll, making up more than 23 percent of the global caseload.
U.S. COVID-19 cases hit 17 million on Dec. 17, and added 1 million in four days.
The past week witnessed record numbers of cases, deaths as well as hospitalizations across the states.
On Dec. 18, the United States reported 249,709 new cases, the highest number of daily cases so far since the pandemic began, according to data complied by Johns Hopkins University.
On Dec. 16, U.S. daily deaths surged to 3,668, the greatest loss of lives in a single day since the start of the pandemic, showed the university's chart.
In addition, current hospitalizations in the United States soared to a peak number of 114,459 on Dec. 17, according to The COVID Tracking Project.
As the pandemic is raging across the states, a total of 4,624,325 doses of vaccine have been distributed and 614,117 doses have been administered as of 9:00 a.m. local time (1400 GMT) on Dec. 21, the U.S. Centers for Disease Control and Prevention showed on its website.
Meanwhile, the Institute for Health Metrics and Evaluation at the University of Washington projected a total of 561,669 COVID-19 deaths in the United States by April 1, 2021, based on current projection scenario.