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In this April 11, 2020, photo released by Xinhua News Agency, a staff member tests samples of a potential COVID-19 vaccine at a production plant of SinoPharm in Beijing. In the global race to make a coronavirus vaccine, the state-owned Chinese company is boasting that it gave its employees, including top executives, experimental shots even before the government OK'd testing in people. (Zhang Yuwei/Xinhua via AP)

FILE - In this Monday, Jan. 13 2020 file photo, Roger Torrent, President of Catalonian Parliament, answers reporters at the European Parliament in Strasbourg, eastern France. The speaker of the Catalan regional parliament is demanding that the Spanish government launch an official investigation into reports that his cellphone was the target of espionage, allegedly by Spanish security services. Roger Torrent, a leading Catalan independence supporter, said Tuesday, July 14 in a televised statement, “It’s important for the truth to come out.” (AP Photo/Jean-Francois Badias, file)

FILE - In this March 16, 2020, file photo, a patient receives a shot in the first-stage safety study clinical trial of a potential vaccine for COVID-19, the disease caused by the new coronavirus, at the Kaiser Permanente Washington Health Research Institute in Seattle. When precious vats of COVID-19 vaccine are finally ready, the ability to jab the lifesaving solution into the arms of Americans will require hundreds of millions of injections. (AP Photo/Ted S. Warren, File)

A worker walks past a freshly-dug graves at the Honingnestkrans Cemetery, North of Pretoria, South Africa, Thursday, July 9, 2020. The Africa Centers for Disease Control and Prevention says the coronavirus pandemic on the continent is reaching "full speed" after cases surpassed a half-million and a South African official said a single province is preparing 1.5 million grave. (AP Photo/Shiraaz Mohamed)

FILE - In this June 19, 2020, file photo, people demonstrate in Chicago, to mark Juneteenth. A national coalition of labor unions, along with racial and social justice organizations, will stage a mass walkout from work July 20, as part of an ongoing reckoning on systemic racism and police brutality in the U.S. (AP Photo/Nam Y. Huh, File)

FILE - In this Nov. 19, 2019, file photo National Security Council aide Lt. Col. Alexander Vindman is sworn in to testify before the House Intelligence Committee on Capitol Hill in Washington. Vindman, who played a central role in President Donald Trump’s impeachment case, announced his retirement from the army July 7, 2020, in a scathing statement that accused the president of running a “campaign of bullying, intimidation, and retaliation.”(AP Photo/Andrew Harnik, File)

Democratic presidential candidate, former Vice President Joe Biden puts on a face mask to protect against the spread of the new coronavirus as he departs after speaking at Alexis Dupont High School in Wilmington, Del., Tuesday, June 30, 2020. (AP Photo/Patrick Semansky)

Emiratis wearing face masks due to the coronavirus pandemic work on the floor of the Dubai Financial Market in Dubai, United Arab Emirates, Tuesday, July 7, 2020. Dubai reopened its Dubai Financial Market stock exchange Tuesday after closing its floor due to the coronavirus pandemic. (AP Photo/Jon Gambrell)

Hong Kong Chief Executive Carrie Lam listens to reporters' questions during a press conference in Hong Kong, Tuesday, July 7, 2020. TikTok said Tuesday it will stop operations in Hong Kong, joining other social media companies in warily eyeing ramifications of a sweeping national security law that took effect last week.(AP Photo/Vincent Yu)