A woman walks along the East River at a park in New York, the United States, on Jan. 9, 2021. The total number of COVID-19 cases in the United States topped 22 million on Saturday, according to the Center for Systems Science and Engineering (CSSE) at Johns Hopkins University. (Xinhua/Wang Ying)

A customer carries items at a Costco store in New York, the United States, on Jan. 9, 2021. The total number of COVID-19 cases in the United States topped 22 million on Saturday, according to the Center for Systems Science and Engineering (CSSE) at Johns Hopkins University. (Xinhua/Wang Ying)

A notice of social distancing is seen in New York, the United States, on Jan. 9, 2021. The total number of COVID-19 cases in the United States topped 22 million on Saturday, according to the Center for Systems Science and Engineering (CSSE) at Johns Hopkins University. (Xinhua/Wang Ying)

A worker disinfects shopping carts in New York, the United States, on Jan. 9, 2021. The total number of COVID-19 cases in the United States topped 22 million on Saturday, according to the Center for Systems Science and Engineering (CSSE) at Johns Hopkins University. (Xinhua/Wang Ying)

Pedestrians walk on a street in New York, the United States, on Jan. 9, 2021. The total number of COVID-19 cases in the United States topped 22 million on Saturday, according to the Center for Systems Science and Engineering (CSSE) at Johns Hopkins University. (Xinhua/Wang Ying)