Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, attends the daily coronavirus response briefing in the Rose Garden at the White House in Washington, U.S., March 30, 2020. REUTERS/Tom Brenner

Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, attends the daily coronavirus response briefing in the Rose Garden at the White House in Washington, U.S., March 30, 2020. REUTERS/Tom Brenner

German Chancellor Angela Merkel addresses a news conference on coronavirus in Berlin, Germany, March 11, 2020. REUTERS/Axel Schmidt

German Chancellor Angela Merkel addresses a news conference on coronavirus in Berlin, Germany, March 11, 2020. REUTERS/Axel Schmidt

A group of women systematically duplicate mail-in ballots with selections that the tabulation machine cannot read at the El Dorado County Elections Department for the presidential primaries on Super Tuesday in Placerville, California U.S., March 3, 2020. REUTERS/Gabriela Bhaskar

U.S. President Donald Trump talks about preparedness to confront the coronavirus outbreak during a meeting with African-American leaders in the Cabinet Room of the White House in Washington, U.S., February 27, 2020. REUTERS/Leah Millis

U.S. President Donald Trump talks about preparedness to confront the coronavirus outbreak during a meeting with African-American leaders in the Cabinet Room of the White House in Washington, U.S., February 27, 2020. REUTERS/Leah Millis

A woman wearing a face mask crosses a road next to a bus at the Qianmen area, in the morning after the extended Lunar New Year holiday caused by the novel coronavirus outbreak, in Beijing, China February 10, 2020. REUTERS/Carlos Garcia Rawlins

A woman wearing a face mask crosses a road next to a bus at the Qianmen area, in the morning after the extended Lunar New Year holiday caused by the novel coronavirus outbreak, in Beijing, China February 10, 2020. REUTERS/Carlos Garcia Rawlins

XVIII Pan American Games - Lima 2019 - Athletics - Women's High Jump Final - Athletics Stadium, Lima, Peru - August 8, 2019. Brazil's Valdileia Martins in action. REUTERS/Henry Romero

XVIII Pan American Games - Lima 2019 - Field Hockey - Women Semifinals - Argentina Vs. Chile - Hockey Field, Lima, Peru - August 6, 2019. Chile players guard the goal. REUTERS/Sergio Moraes

XVIII Pan American Games - Lima 2019 - Field Hockey - Women Semifinals - Argentina Vs. Chile - Hockey Field, Lima, Peru - August 6, 2019. Chile players guard the goal. REUTERS/Sergio Moraes

German Chancellor Angela Merkel and Markus Soeder, Prime Minister of Bavaria with his wife Karin arrive to attend the opening of the Bayreuth Wagner Festival at the Richard Wagner Festival Hall in Bayreuth, Germany July 25, 2019. REUTERS/Andreas Gebert

German Chancellor Angela Merkel and Markus Soeder, Prime Minister of Bavaria with his wife Karin pose for a picture as they arrive to attend the opening of the Bayreuth Wagner Festival at the Richard Wagner Festival Hall in Bayreuth, Germany July 25, 2019. REUTERS/Andreas Gebert

People watch a young man as he jumps from a diving platform into Lake Zurich during hot summer weather in Zurich, Switzerland July 25, 2019. REUTERS/Arnd Wiegmann

Biennale President Paolo Baratta looks on during the announcement of the 76th Venice Film Festival line-up, in Rome, Italy July 25, 2019. REUTERS/Remo Casilli

British PM Johnson holds his first cabinet meeting at Downing Street, London, Britain July 25, 2019. Aaron Chown/Pool via REUTERS

British PM Johnson holds his first cabinet meeting at Downing Street, London, Britain July 25, 2019. Aaron Chown/Pool via REUTERS

Education Secretary Gavin Williamson, International Trade Secretary Liz Truss, Health and Social Care Secretary Matt Hancock, Cabinet Secretary Sir Mark Sedwill, Prime Minister Boris Johnson, Chancellor of the Exchequer Sajid Javid, Works and Pensions Secretary and Minister for Women Amber Rudd, Housing, Communities and Local Government Secretary Robert Jenrick, Transport Secretary Grant Shapps, Scottish Secretary Alister Jack and Culture Secretary Nicky Morgan, as Prime Minister Boris Johnson holds his first Cabinet meeting at Downing Street, London, Britain July 25, 2019. Aaron Chown/Pool via REUTERS

Education Secretary Gavin Williamson, International Trade Secretary Liz Truss, Health and Social Care Secretary Matt Hancock, Cabinet Secretary Sir Mark Sedwill, Prime Minister Boris Johnson, Chancellor of the Exchequer Sajid Javid, Works and Pensions Secretary and Minister for Women Amber Rudd, Housing, Communities and Local Government Secretary Robert Jenrick, Transport Secretary Grant Shapps, Scottish Secretary Alister Jack and Culture Secretary Nicky Morgan, as Prime Minister Boris Johnson holds his first Cabinet meeting at Downing Street, London, Britain July 25, 2019. Aaron Chown/Pool via REUTERS

Ana and her five-year-old daughter Alicia, Guatemalan migrants, wait with fellow Central American asylum seekers recently released from federal detention, at a bus depot in McAllen, Texas, U.S. July 24, 2019. REUTERS/Loren Elliott

Larry the cat lies outside Downing Street, in London, Britain July 24, 2019. REUTERS/Hannah Mckay

Cycling - Tour de France - The 200-km Stage 17 from Pont du Gard to Gap - July 24, 2019 - The peloton, with Deceuninck-Quick Step rider Julian Alaphilippe of France wearing the overall leader's yellow jersey and Team INEOS rider Geraint Thomas of Britain, finishes. REUTERS/Gonzalo Fuentes

Cycling - Tour de France - The 200-km Stage 17 from Pont du Gard to Gap - July 24, 2019 - Mitchelton-Scott rider Matteo Trentin of Italy wins the stage. REUTERS/Gonzalo Fuentes

REFILE - QUALITY REPEAT Jo Swinson reacts after being announced as the new leader of the Liberal Democrats party in London, Britain July 22, 2019. REUTERS/Peter Nicholls

Children play in the fountain at Washington Square Park during hot weather in the Manhattan borough of New York, New York, U.S., July 19, 2019. REUTERS/Carlo Allegri

Kids and adults cool off in a fountain on the Rose Kennedy Greenway on the first day of a forecasted summer heatwave in Boston, Massachusetts, U.S., July 19, 2019. REUTERS/Brian Snyder TPX IMAGES OF THE DAY

Kids and adults cool off in a fountain on the Rose Kennedy Greenway on the first day of a forecasted summer heatwave in Boston, Massachusetts, U.S., July 19, 2019. REUTERS/Brian Snyder

U.S. President Donald Trump talks with Apollo 11 Lunar Module Pilot Buzz Aldrin asApollo 11 Command Module Pilot Michael Collins, Vice President Mike Pence, first lady Melania Trump and guests look on during an Apollo 11 50th anniversary commemoration event in the Oval Office of the White House in Washington, U.S., July 19, 2019. REUTERS/Leah Millis??

U.S. Treasury Secretary Steven Mnuchin and philanthropist Melinda Gates, Co-Chair of the Bill and Melinda Gates Foundation, attend a meeting during the G7 finance ministers and central bank governors meeting in Chantilly, near Paris, France, July 18, 2019. REUTERS/Pascal Rossignol

A warning sign is pictured on a serpentine wire blocking a lane towards El Paso, Texas, U.S. on the international border bridge Paso del Norte, as seen from Ciudad Juarez, Mexico July 17, 2019. REUTERS/Daniel Becerril

A U.S. Customs and Border Protection officer inspects a particular vehicle on the international border bridge Paso del Norte, as seen from Ciudad Juarez, Mexico July 17, 2019. REUTERS/Daniel Becerril

Britain's Queen Elizabeth II attends a special exhibition celebrating the 200th anniversary of the birth of Queen Victoria which marks this year's Summer Opening of Buckingham Palace in London, Britain, July 17, 2019. Victoria Jones/Pool via REUTERS

Dutch Prime Minister Mark Rutte attends a commemoration ceremony in memory of the victims of the Malaysia Airlines flight MH17 plane crash on the fifth anniversary of the accident, in Vijfhuizen, Netherlands June 17, 2019. Frank Van Beek/Pool via REUTERS

Greek newly appointed ministers swear the oath in front of the Orthodox Archbishop Ieronimos as Prime Minister Kyriakos Mitsotakis and President Prokopis Pavlopoulos look on during a swearing-in ceremony at the Presidential Palace in Athens, Greece, July 9. 2019. REUTERS/Alkis Konstantinidis

A woman talks on her phone as she walks past a sign of Great Wall’s HAVAL at its research and development center in Baoding, Hebei province, China July 9 2019. REUTERS/Yilei Sun

Greek newly appointed ministers swear the oath in front of the Orthodox Archbishop Ieronimos at the Presidential palace in Athens, Greece, July 9. 2019. REUTERS/Alkis Konstantinidis

U.S. first lady Melania Trump visits a field of American flags, each flag representing a child in the foster system in Cabell County, WV, most of them due to the opioid crisis, at Ritter Park in Huntington, W.V., U.S., July 8, 2019. REUTERS/Al Drago

REFILE - ADDING INFORMATION Leader of New Democracy conservative party and winner of Greek general election Kyriakos Mitsotakis, along with his wife Mareva Grabowski-Mitsotakis, arrives for a swearing-in ceremony as prime minister near the Presidential Palace in Athens, Greece July 8, 2019. REUTERS/Costas Baltas

Sviatoslav Vakarchuk, Ukrainian musician and frontman of a popular rock band Okean Elzy and head of political party "Voice", attends an interview with Reuters in Kiev, Ukraine June 19, 2019. Picture taken June 19, 2019. REUTERS/Gleb Garanich

Sviatoslav Vakarchuk, Ukrainian musician and frontman of a popular rock band Okean Elzy and head of political party "Voice", attends a pre-election rally and a concert in Lviv, Ukraine June 18, 2019. Picture taken June 18, 2019. REUTERS/Pavlo Palamarchuk

Debris are seen in a parking after an explosion at The Fountains shopping center in Plantation, Florida, U.S. July 6, 2019. REUTERS/Marco Bello

Rugby League - Super League - Castleford Tigers v Leeds Rhinos - The Mend-A-Hose Jungle, Castleford, Britain - July 5, 2019 Leeds Rhinos' Richie Myler celebrates after the match Action Images/John Clifton

2019 BET Awards - Show - Los Angeles, California, U.S., June 23, 2019 - Mary J. Blige accepts the Lifetime Achievement award. REUTERS/Mike Blake

Cricket - ICC Cricket World Cup - India v Afghanistan - The Ageas Bowl, Southampton, Britain - June 22, 2019 India's Mohammed Shami celebrates taking the wicket of Afghanistan's Mujeeb Ur Rahman with team mates to complete a hat trick and win the match Action Images via Reuters/Paul Childs

Cricket - ICC Cricket World Cup - India v Afghanistan - The Ageas Bowl, Southampton, Britain - June 22, 2019 India's Mohammed Shami celebrates taking the wicket of Afghanistan's Mujeeb Ur Rahman with team mates to complete a hat trick and win the match Action Images via Reuters/Paul Childs

Tennis - WTA Premier - Nature Valley Classic - Edgbaston Priory Club, Edgbaston, Birmingham, Britain - June 21, 2019 Latvia's Jelena Ostapenko reacts during her quarter final match against Croatia's Petra Martic Action Images via Reuters/Carl Recine

The sun rises as revellers welcome in the Summer Solstice at the Stonehenge stone circle, in Amesbury, Britain June 21, 2019. REUTERS/Hannah McKay

Soccer Football - Copa America Brazil 2019 - Group C - Uruguay v Japan - Arena Do Gremio, Porto Alegre, Brazil - June 20, 2019 Uruguay fans before the match REUTERS/Diego Vara

Fans celebrate in the streets of Toronto, Canada after the Toronto Raptors win the NBA Championship in Toronto, Ontario, Canada, June 13, 2019. REUTERS/Chris Helgren

U.S. President Donald Trump addresses a joint news conference with Poland's President Andrzej Duda in the Rose Garden at the White House in Washington, U.S., June 12, 2019. REUTERS/Leah Millis

African migrants wait to be admitted outside of Siglo XXI migration facility in Tapachula, Mexico, June 12, 2019. REUTERS/Jose Cabezas

Chairman of Ionner Ltd, James Calaway, speaks during the lithium industry's annual conference in Santiago, Chile, June 12, 2019. REUTERS/Rodrigo Garrido

Protesters rally against a proposed extradition bill in Hong Kong, China June 12, 2019. REUTERS/Tyrone Siu

Fans in costumes are seen at the premiere for "Toy Story 4" in Los Angeles, California, U.S., June 11, 2019. REUTERS/Mario Anzuoni

Traffic flows are seen along a street in Kharto, Sudan June 11, 2019. REUTERS/Mohamed Nureldin Abdallah

Sudanese children walk along a street in Khartoum, Sudan June 11, 2019. REUTERS/Mohamed Nureldin Abdallah

Sudanese customers queue to access money services at the Faisal Islamic Bank (Sudan) in Khartoum, Sudan June 11, 2019. REUTERS/Mohamed Nureldin Abdallah

Sudanese customers queue to access money services at the Faisal Islamic Bank (Sudan) in Khartoum, Sudan June 11, 2019. REUTERS/Mohamed Nureldin Abdallah

Soccer Football - Champions League Final - Tottenham Hotspur v Liverpool - Wanda Metropolitano, Madrid, Spain - June 1, 2019 Liverpool manager Juergen Klopp is thrown in the air by the players as they celebrate after winning the Champions League REUTERS/Kai Pfaffenbach TPX IMAGES OF THE DAY