A healthcare worker wheels a stretcher to an ambulance outside Brooklyn Hospital Center in the Brooklyn borough of New York, the United States, on April 24, 2020. More than 50,000 people have died of COVID-19 in the United States while debates are heightening over reopening the country's economy severely battered by the virus. A total of 870,468 cases have been reported in the United States with the death toll reaching 50,031 as of 11 a.m. Friday (1500 GMT), according to the Center for Systems Science and Engineering (CSSE) at Johns Hopkins University. (Photo by Michael Nagle/Xinhua)

Photo taken on April 24, 2020 shows an empty park in Arlington, Virginia, the United States. The number of COVID-19 deaths in the United States topped 50,000 as of 11 a.m. (1500 GMT) on Friday, reaching 50,031, according to the Center for Systems Science and Engineering (CSSE) at Johns Hopkins University. A total of 870,468 cases have been reported in the country, according to the CSSE. (Xinhua/Liu Jie)

Photo taken on April 24, 2020 shows a statue at the U.S. Marine Corps War Memorial in Arlington, Virginia, the United States. The number of COVID-19 deaths in the United States topped 50,000 as of 11 a.m. (1500 GMT) on Friday, reaching 50,031, according to the Center for Systems Science and Engineering (CSSE) at Johns Hopkins University. A total of 870,468 cases have been reported in the country, according to the CSSE. (Xinhua/Liu Jie)

Photo taken on April 24, 2020 shows the U.S. Capitol building, the Washington Monument and the Lincoln Memorial (from R to L) in mist in Washington D.C., the United States. The number of COVID-19 deaths in the United States topped 50,000 as of 11 a.m. (1500 GMT) on Friday, reaching 50,031, according to the Center for Systems Science and Engineering (CSSE) at Johns Hopkins University. A total of 870,468 cases have been reported in the country, according to the CSSE. (Xinhua/Liu Jie)

Photo taken on April 24, 2020 shows the U.S. Capitol building, the Washington Monument and the Lincoln Memorial (from R to L) in mist in Washington D.C., the United States. The number of COVID-19 deaths in the United States topped 50,000 as of 11 a.m. (1500 GMT) on Friday, reaching 50,031, according to the Center for Systems Science and Engineering (CSSE) at Johns Hopkins University. A total of 870,468 cases have been reported in the country, according to the CSSE. (Xinhua/Liu Jie)

People pick up food at a food bank distribution site in the Brooklyn borough of New York, the United States, on April 24, 2020. More than 50,000 people have died of COVID-19 in the United States while debates are heightening over reopening the country's economy severely battered by the virus. A total of 870,468 cases have been reported in the United States with the death toll reaching 50,031 as of 11 a.m. Friday (1500 GMT), according to the Center for Systems Science and Engineering (CSSE) at Johns Hopkins University. (Photo by Michael Nagle/Xinhua)

People wait in a line to pick up food at a food bank distribution site in the Brooklyn borough of New York, the United States, on April 24, 2020. More than 50,000 people have died of COVID-19 in the United States while debates are heightening over reopening the country's economy severely battered by the virus. A total of 870,468 cases have been reported in the United States with the death toll reaching 50,031 as of 11 a.m. Friday (1500 GMT), according to the Center for Systems Science and Engineering (CSSE) at Johns Hopkins University. (Photo by Michael Nagle/Xinhua)

A funeral home worker wearing a respirator and face shield wheels an empty cardboard box to the refrigerated temporary morgue outside Brooklyn Hospital Center in the Brooklyn borough of New York, the United States, on April 24, 2020. More than 50,000 people have died of COVID-19 in the United States while debates are heightening over reopening the country's economy severely battered by the virus. A total of 870,468 cases have been reported in the United States with the death toll reaching 50,031 as of 11 a.m. Friday (1500 GMT), according to the Center for Systems Science and Engineering (CSSE) at Johns Hopkins University. (Photo by Michael Nagle/Xinhua)

A sign expressing love for doctors and nurses is displayed in the window of a convenience store outside the Brooklyn Hospital Center in the Brooklyn borough of New York, the United States, on April 24, 2020. More than 50,000 people have died of COVID-19 in the United States while debates are heightening over reopening the country's economy severely battered by the virus. A total of 870,468 cases have been reported in the United States with the death toll reaching 50,031 as of 11 a.m. Friday (1500 GMT), according to the Center for Systems Science and Engineering (CSSE) at Johns Hopkins University. (Photo by Michael Nagle/Xinhua)

Hospital workers wheel a hospital bed up a driveway after transporting the body of a deceased person to a refrigerated temporary morgue outside Brooklyn Hospital Center in the Brooklyn borough of New York, the United States, on April 24, 2020. More than 50,000 people have died of COVID-19 in the United States while debates are heightening over reopening the country's economy severely battered by the virus. A total of 870,468 cases have been reported in the United States with the death toll reaching 50,031 as of 11 a.m. Friday (1500 GMT), according to the Center for Systems Science and Engineering (CSSE) at Johns Hopkins University. (Photo by Michael Nagle/Xinhua)