The number of confirmed coronavirus cases in the United States has reached 4700 million and 766 thousand deaths. In many parts of the United States, the epidemic has spread due to low vaccination rates. The Associated Press reported that the coronavirus vaccination rate in Wyoming was 43%, and the number of coronavirus patients in hospitals reached the highest level since the epidemic. Mark Doyle, a local public health official, said: "Intensive care beds have reached the limit of capacity." Opheit, director of the Vaccine Education Center of Philadelphia Children's Hospital, said that "the situation in the United States is worse than a year ago", and many inpatient children are at high risk because they have not yet been vaccinated with the first dose of vaccine.