A restaurant provides more outdoor seats in New Orleans, Louisiana, the United States, Jan. 8, 2021. U.S. city of New Orleans on Friday tightened its COVID-19 restrictions as the situation of the pandemic continued to worsen in the past days. (Photo by Lan Wei/Xinhua)

A restaurant provides more outdoor seats in New Orleans, Louisiana, the United States, Jan. 8, 2021. U.S. city of New Orleans on Friday tightened its COVID-19 restrictions as the situation of the pandemic continued to worsen in the past days. (Photo by Lan Wei/Xinhua)

A restaurant provides more outdoor seats in New Orleans, Louisiana, the United States, Jan. 8, 2021. U.S. city of New Orleans on Friday tightened its COVID-19 restrictions as the situation of the pandemic continued to worsen in the past days. (Photo by Lan Wei/Xinhua)

A bar provides more outdoor seats in New Orleans, Louisiana, the United States, Jan. 8, 2021. U.S. city of New Orleans on Friday tightened its COVID-19 restrictions as the situation of the pandemic continued to worsen in the past days. (Photo by Lan Wei/Xinhua)

A school is closed in New Orleans, Louisiana, the United States, Jan. 8, 2021. U.S. city of New Orleans on Friday tightened its COVID-19 restrictions as the situation of the pandemic continued to worsen in the past days. (Photo by Lan Wei/Xinhua)