By Laura Wasserstrom-Moss, Reuters A woman is seen in her wheelchair outside a health clinic in Beijing, China, March 11, 2020.

REUTERS/Jason Lee Reuters A woman carries a baby inside a health center in Beijing on March 11.

REUTERS /Jason Lee A health worker takes a selfie with a person wearing a mask as they receive medical treatment in Beijing March 11 , 2020.

A man wears a mask while receiving medical treatment at a health facility in Beijing.

People walk past a health centre in Beijing as they look at pictures of a patient wearing a face mask, which has been worn in China since the end of World War Two.

Health workers gather in a hospital building in Beijing during a visit by U.S. President Donald Trump on March 12, 2020, as part of the Asia-Pacific Economic Cooperation (APEC) summit.

Chinese President Xi Jinping greets Chinese people during a meeting with leaders of the United States, Canada, Japan and South Korea on March 13, 2020 in Seoul.

The sun sets over Shanghai, China on March 15, 2020 as the Chinese President Xi Zhongxing, second from left, and U.N. Secretary-General Antonio Guterres pose for a group photo at the China Great Wall on the Chinese side of the border.

President Xi Jinping delivers remarks during a welcoming ceremony for the 10th Five-Year Plan, which was signed in Beijing last week, at the Great Wall of China in the Great Hall of the People in Beijing April 5, 2020.(Photo by Kevin Lamarque/Reuters) The U.K.’s National Health Service unveils its first-ever face mask for the 2019 World Cup on May 1, 2020 at Wembley Stadium in London.

Police officers stand guard outside a hospital in Beijing to detain a patient who is being treated for an autoimmune disease after it was found in a patient’s body on March 6, 2020 near the Changsha district in Changsha, southwest China.

U.

S President Donald J. Trump arrives at a welcoming dinner to mark the 10-year anniversary of the Beijing Olympics in the East Room of the White House in Washington, DC, U.A.E., March 24, 2020 for a summit between the U.s. and China on global health and climate change.

China has introduced new rules for its medical examiners to use a face-mask system that has not been in use since the late 1970s.

Trump greets Chinese President and Chief Executive Xi Jinping on March 19, 2020 during the U,S.-China Economic and Security Review Commission’s annual meeting in Washington.

More than half of all U. S. adults now have a severe autoimmune disease, according to the Centers for Disease Control and Prevention (CDC).

A Chinese woman wearing a black face mask holds a baby as she is treated for severe allergic rhinitis at a hospital on March 8, 2020 outside Beijing.

The woman had been wearing a facemask for a year before she was tested for the disease.

In this March 8 and 9, 2020 file photo, Chinese President (C) Xi Jinping speaks during a joint press conference at the National People’s Congress (NPC) in Beijing.(Photo credit: Xinhua/China Daily via Reuters) China’s health officials are expected to introduce a new diagnostic test for the new face mask that will include the new diagnostic marker, a marker used to confirm the presence of the disease in patients, the state-run Xinhua news agency reported.

This picture taken on March 10, 2020 shows an illustration of the new Chinese face mask as it is worn by Chinese President, Xi Jinping, right, during a ceremony in the Chinese capital, Beijing.(AP Photo/Pool via AP) A nurse wearing a protective mask stands guard outside an ICU ward at a Beijing hospital on Feb. 20, 2020 after an ICYMI patient with a serious autoimmune disease was diagnosed.

Medical staff stand guard at a building where an immunotherapy drug has been approved for use in treating severe allergic skin disease on February 21, 2020 where the World Health Organization (WHO) has approved the development of the anti-inflammatory treatment for the severe allergic-type condition.

An elderly woman walks past a poster in front of a hospital where a patient with severe allergic disease was being treated, in Beijing February 23, 2020 China will soon begin a phase-two clinical trial of the injection-delivery system (EDS), a new treatment that is intended to help prevent skin infections in patients with severe allergies.

Walking with a cane and wearing a white face mask in front, Chinese people wave in front the China flag in Beijing’s Tiananmen Square in March 2021.(Photo Credit: Reuters)A Chinese man looks at a poster for the Chinese medical examinsition system in Beijing in this April 11, 2021 file photo.(PhotoCredit: Xinanjiang News Agency via Reuters/File) An Indian woman takes a