According to US media reports on the 21st, more than 44000 new confirmed cases were confirmed in the United States in a single day from the previous day to the 21st. At present, there are more than 5.62 million confirmed cases and more than 175000 deaths in the United States. According to the latest prediction of the Centers for Disease Control and prevention, the number of deaths in the United States will reach about 195000 by September 12 this year. U.S. experts also warned that the U.S. epidemic may be in the autumn and winter season again outbreak. Previously, experts in the United States pointed out that the United States has never come out of the first wave of epidemic. Scott Gottlieb, former director of the U.S. Food and drug administration, also pointed out in an interview with consumer news and business channel on the 21st that the so-called second wave of epidemic has not really occurred in the United States. From the initial outbreak in New York state to the rapid increase in California, Texas and other places, and then to the outbreak that may occur in autumn and winter this year, it should be said that the epidemic is spreading in a wider range in the United States. Gottlieb pointed out that some rural areas in the United States that are “basically unaffected” this autumn and winter are likely to be affected, while the number of cases in the western and Midwest of the United States has begun to increase. Redfield, director of the U.S. Centers for Disease Control and prevention, also warned that the United States will face greater difficulties in autumn and winter this year, with cases likely to rise again, and the medical system will face greater pressure.