Pro-China supporters wear face masks with China's flag during China’s National Day in Hong Kong, China October 1, 2020. REUTERS/Lam Yik

A pro-China supporter wears a face mask with China's flag during China’s National Day in Hong Kong, China October 1, 2020. REUTERS/Lam Yik

A billboard shows a man wearing a face mask, amid the coronavirus disease (COVID-19) outbreak, in Cleveland, Ohio, U.S., September 30, 2020. REUTERS/Brian Snyder

Members of the security forces wearing protective face masks take part in a promotion ceremony from policemen to corporals in San Salvador, El Salvador, September 30, 2020. REUTERS/Jose Cabezas

Members of the security forces wearing protective face masks take part in a promotion ceremony from policemen to corporals in San Salvador, El Salvador, September 30, 2020. REUTERS/Jose Cabezas

People wearing protective masks ride a motorbike past a closed store amid the outbreak of the coronavirus disease (COVID-19) in Nusa Lembongan, Bali, Indonesia September 25, 2020. Picture taken September 25, 2020. REUTERS/Nyimas Laula

A man wearing a protective mask receives money for dried seaweed amid the coronavirus disease (COVID-19) outbreak in Nusa Lembongan, Bali, Indonesia September 25, 2020. Picture taken September 25, 2020. REUTERS/Nyimas Laula

Soccer Football - Copa Libertadores - River Plate v Sao Paulo - Estadio Libertadores de America, Buenos Aires, Argentina - September 30, 2020 River Plate coach Marcelo Gallardo wearing a protective face mask before the match POOL via REUTERS/Marcelo Endelli

Soccer Football - Copa Libertadores - River Plate v Sao Paulo - Estadio Libertadores de America, Buenos Aires, Argentina - September 30, 2020 River Plate coach Marcelo Gallardo wearing a protective face mask before the match Marcelo Endelli/Pool via REUTERS

People wearing face masks, following the coronavirus disease (COVID-19) outbreak, wave China flags during a flag-raising ceremony at Tiananmen Square on National Day to mark the 71st anniversary of the founding of People's Republic of China, in Beijing, China October 1, 2020. REUTERS/Carlos Garcia Rawlins

People wearing face masks, following the coronavirus disease (COVID-19) outbreak, attend a flag-raising ceremony at Tiananmen Square on National Day to mark the 71st anniversary of the founding of People's Republic of China, in Beijing, China October 1, 2020. REUTERS/Carlos Garcia Rawlins TPX IMAGES OF THE DAY

People wearing face masks, following the coronavirus disease (COVID-19) outbreak, attend a flag-raising ceremony at Tiananmen Square on National Day to mark the 71st anniversary of the founding of People's Republic of China, in Beijing, China October 1, 2020. REUTERS/Carlos Garcia Rawlins

People wearing face masks, following the coronavirus disease (COVID-19) outbreak, hold China flags attend a flag-raising ceremony at Tiananmen Square on National Day to mark the 71st anniversary of the founding of People's Republic of China, in Beijing, China October 1, 2020. REUTERS/Carlos Garcia Rawlins

People wearing face masks, following the coronavirus disease (COVID-19) outbreak, attend a flag-raising ceremony at Tiananmen Square on National Day to mark the 71st anniversary of the founding of People's Republic of China, in Beijing, China October 1, 2020. REUTERS/Carlos Garcia Rawlins

Soccer Football - Copa Libertadores - Nacional v Racing Club - Gran Parque Central, Montevideo, Uruguay - September 30, 2020 Nacional coach Gustavo Munua wearing a protective face mask Pool via REUTERS/Matilde Campodonico

An attendee wears a face mask in support of U.S. President Donald Trump as he listens during a campaign event with White House Senior Adviser Ivanka Trump at the Citrus Club in Orlando, Florida, U.S., September 30, 2020. REUTERS/Al Drago

An attendee wears a face mask in support of U.S. President Donald Trump as he listens during a campaign event with White House Senior Adviser Ivanka Trump at the Citrus Club in Orlando, Florida, U.S., September 30, 2020. REUTERS/Al Drago

An attendee wears a Women for Trump face mask as she listens during a campaign event with White House Senior Adviser Ivanka Trump, for U.S. President Donald Trump, at the Citrus Club in Orlando, Florida, U.S., September 30, 2020. REUTERS/Al Drago

An attendee wears a face mask in support of U.S. President Donald Trump as he listens during a campaign event with White House Senior Adviser Ivanka Trump at the Citrus Club in Orlando, Florida, U.S., September 30, 2020. REUTERS/Al Drago

An attendee wears a Women for Trump face mask as she listens during a campaign event with White House Senior Adviser Ivanka Trump, for U.S. President Donald Trump, at the Citrus Club in Orlando, Florida, U.S., September 30, 2020. REUTERS/Al Drago

A woman wearing a protective face mask travels on a ferry over the Bosphorus as the outbreak of the coronavirus disease (COVID-19) continues, in Istanbul, Turkey September 30, 2020. REUTERS/Murad Sezer

Face masks and campaign posters are photographed at Democratic U.S. Senate candidate Amy McGrath’s voter registration event at the University of Louisville in Louisville, Kentucky, U.S. September 30, 2020. REUTERS/Jeffrey Dean

Senate Majority Leader Mitch McConnell (R-KY) puts on a mask after speaking to the media after a lunch with Republican Senators on Capitol Hill in Washington, U.S., September 30, 2020. REUTERS/Joshua Roberts

Senate Majority Leader Mitch McConnell (R-KY) puts on a mask after speaking to the media after a lunch with Republican Senators, on Capitol Hill in Washington, U.S., September 30, 2020. REUTERS/Joshua Roberts

Soccer Football - Serie A - Lazio v Atalanta - Stadio Olimpico, Rome, Italy - September 30, 2020 A Lazio fan wearing a mask inside the stadium during the match REUTERS/Alberto Lingria

Soccer Football - Champions League - Play-off - Second Leg - FC Red Bull Salzburg v Maccabi Tel Aviv - Red Bull Arena Salzburg, Salzburg, Austria - September 30, 2020 FC Red Bull Salzburg's Sekou Koita wearing a protective face mask before the match REUTERS/Leonhard Foeger

Soccer Football - Serie A - Lazio v Atalanta - Stadio Olimpico, Rome, Italy - September 30, 2020 General view as fans wear masks inside the stadium before the match REUTERS/Alberto Lingria

Soccer Football - Champions League - Play-off - Second Leg - FC Red Bull Salzburg v Maccabi Tel Aviv - Red Bull Arena Salzburg, Salzburg, Austria - September 30, 2020 General view of a steward wearing a mask inside the stadium before the match REUTERS/Leonhard Foeger

Soccer Football - DFL-Supercup - Bayern Munich v Borussia Dortmund - Allianz Arena, Munich, Germany - September 30, 2020 Bayern Munich coach Hansi Flick wearing a protective face mask before the match REUTERS/Andreas Gebert/Pool DFL regulations prohibit any use of photographs as image sequences and/or quasi-video

Soccer Football - Champions League - Play-off - Second Leg - FC Red Bull Salzburg v Maccabi Tel Aviv - Red Bull Arena Salzburg, Salzburg, Austria - September 30, 2020 General view of a steward wearing a mask inside the stadium before the match REUTERS/Leonhard Foeger

Senator Amy Klobuchar, a Democrat from Minnesota, wears a protective mask as she arrives to a hearing in Washington, D.C., U.S., September 30, 2020. The committee is exploring the FBI's investigation of the 2016 Trump campaign and Russian election interference. Stefani Reynolds/Pool via REUTERS

Renan Bole, President Amazon France Logistics adjusts his protective face mask during a meeting at the Amazon fulfillment center in Boves near Amiens, France, September 29, 2020. Picture taken September 29, 2020. REUTERS/Pascal Rossignol

Renan Bole, President Amazon France Logistics adjusts his protective face mask during a meeting at the Amazon fulfillment center in Boves near Amiens, France, September 29, 2020. Picture taken September 29, 2020. REUTERS/Pascal Rossignol

Renan Bole, President Amazon France Logistics adjusts his protective face mask during a meeting at the Amazon fulfillment center in Boves near Amiens, France, September 29, 2020. Picture taken September 29, 2020. REUTERS/Pascal Rossignol

Soccer Football - Serie A - Benevento v Inter Milan - Stadio Ciro Vigorito, Benevento, Italy - September 30, 2020 Benevento fans wearing protective face masks in the stands before the match REUTERS/Ciro De Luca

A supporter of U.S. Democratic presidential candidate and former Vice President Joe Biden wears a protective face mask as she listens to Biden speak ahead of a campaign train tour in Cleveland, Ohio, U.S., September 30, 2020. REUTERS/Mike Segar

NASA Administrator Jim Bridenstine adjusts his mask as he prepares to testify before a US Senate Commerce, Science and Transportation committee, in the U.S. Capitol, in Washington, U.S., September 30, 2020 Graeme Jennings/Pool via REUTERS

A person wears a Palantir Technologies (PLTR) face mask at the New York Stock Exchange (NYSE) on the day of the company's initial public offering (IPO) in Manhattan, New York City, U.S., September 30, 2020. REUTERS/Andrew Kelly

Tennis - French Open - Roland Garros, Paris, France - September 30, 2020 Spectators wearing protective face masks following the outbreak of the coronavirus disease (COVID-19) REUTERS/Charles Platiau

A woman wearing a protective mask carries a child at a residential area as the coronavirus disease (COVID-19) outbreak continues in Jakarta, Indonesia, September 30, 2020. REUTERS/Willy Kurniawan

Youths wearing protective masks enjoy the afternoon at a slum area as the coronavirus disease (COVID-19) outbreak continues in Jakarta, Indonesia, September 30, 2020. REUTERS/Willy Kurniawan

Tennis - French Open - Roland Garros, Paris, France - September 30, 2020 A member of staff wearing a protective face mask following the outbreak of the coronavirus disease (COVID-19) during the second round match between Spain's Rafael Nadal and Mackenzie McDonald of the U.S. REUTERS/Gonzalo Fuentes

Tennis - French Open - Roland Garros, Paris, France - September 30, 2020 Norway's Casper Ruud wearing a protective face mask following the outbreak of the coronavirus disease (COVID-19) before his second round match against Tommy Paul of the U.S. REUTERS/Charles Platiau

Students, wearing protective face masks to avoid the spread of the coronavirus disease (COVID-19), lie on the grass at the Universite Cote d'Azur in Nice, as French universities struggle to contain outbreaks at the beginning of the school year, France, September 24, 2020. Picture taken September 24, 2020. REUTERS/Eric Gaillard

Students of the faculty of sport sciences at Universite Cote d'Azur wearing protective masks to avoid the spread of the coronavirus disease (COVID-19), attend a class in an auditorium, as French universities struggle to contain outbreaks at the beginning of the school year in Nice, France, September 24, 2020. Picture taken September 24, 2020. REUTERS/Eric Gaillard

Students of the faculty of sport sciences at Universite Cote d'Azur wearing protective masks to avoid the spread of the coronavirus disease (COVID-19), attend a class in an auditorium, as French universities struggle to contain outbreaks at the beginning of the school year in Nice, France, September 24, 2020. Picture taken September 24, 2020. REUTERS/Eric Gaillard

Students of the faculty of sport sciences at Universite Cote d'Azur wearing protective masks to avoid the spread of the coronavirus disease (COVID-19), attend a class in an auditorium, as French universities struggle to contain outbreaks at the beginning of the school year in Nice, France, September 24, 2020. Picture taken September 24, 2020. REUTERS/Eric Gaillard

Students of the faculty of sport sciences at Universite Cote d'Azur wearing protective masks to avoid the spread of the coronavirus disease (COVID-19), attend a class in an auditorium, as French universities struggle to contain outbreaks at the beginning of the school year in Nice, France, September 24, 2020. Picture taken September 24, 2020. REUTERS/Eric Gaillard

Students of the faculty of sport sciences at Universite Cote d'Azur wearing protective masks to avoid the spread of the coronavirus disease (COVID-19), practice sport climbing, as French universities struggle to contain outbreaks at the beginning of the school year in Nice, France, September 24, 2020. Picture taken September 24, 2020. REUTERS/Eric Gaillard

Students of the faculty of sport sciences at Universite Cote d'Azur wearing protective masks to avoid the spread of the coronavirus disease (COVID-19), practice sport climbing, as French universities struggle to contain outbreaks at the beginning of the school year in Nice, France, September 24, 2020. Picture taken September 24, 2020. REUTERS/Eric Gaillard

U.S. Secretary of State Mike Pompeo puts off his protective mask during a joint news conference with Italian Foreign Minister Luigi Di Maio in Rome, Italy, September 30, 2020. REUTERS/Guglielmo Mangiapane/Pool

Tennis - French Open - Roland Garros, Paris, France - September 30, 2020 Spain's Rafael Nadal wearing a protective face mask following the outbreak of the coronavirus disease (COVID-19) during his second round match against Mackenzie McDonald of the U.S. REUTERS/Gonzalo Fuentes

A woman wears a protective face mask as she looks at her mobile phone amid the outbreak of the coronavirus disease (COVID-19), in Bangkok, Thailand September 30, 2020. REUTERS/Soe Zeya Tun

People wearing protective face masks take photos amid the outbreak of the coronavirus disease (COVID-19), in Bangkok, Thailand September 30, 2020. REUTERS/Soe Zeya Tun

People wearing protective face masks walk amid the outbreak of the coronavirus disease (COVID-19), in Bangkok, Thailand September 30, 2020. REUTERS/Soe Zeya Tun

A woman wears a protective face mask as she looks at her mobile phone amid the outbreak of the coronavirus disease (COVID-19), in Bangkok, Thailand September 30, 2020. REUTERS/Soe Zeya Tun

A woman wearing a protective face mask walks on the street amid the outbreak of the coronavirus disease (COVID-19), in Bangkok, Thailand September 30, 2020. REUTERS/Soe Zeya Tun

A tuk tuk driver wearing a protective face mask waits for customers amid the outbreak of the coronavirus disease (COVID-19), in Bangkok, Thailand September 30, 2020. REUTERS/Soe Zeya Tun

A woman wearing a protective face mask walks in the working class neighbourhood of Orcasitas, which has been under partial lockdown, amid the coronavirus disease (COVID-19) outbreak in Madrid, Spain, September 30, 2020. REUTERS/Sergio Perez

A man wearing a protective face mask jogs in the working class neighbourhood of Orcasitas, which has been under partial lockdown, amid the coronavirus disease (COVID-19) outbreak in Madrid, Spain, September 30, 2020. REUTERS/Sergio Perez