Stand-ins for President-elect Joe Biden and Jill Biden walk on the podium during a rehearsal for the 59th Presidential Inauguration at the U.S. Capitol in Washington, Monday, Jan. 18, 2021.(AP Photo/Patrick Semansky, Pool)

People light candles and oil lamps, in commemoration of the victims of an attack on the Army Public School (APS) in 2014, in Karachi, Pakistan December 16, 2020. REUTERS/Akhtar Soomro

People light candles and oil lamps, in commemoration of the victims of an attack on the Army Public School (APS) in 2014, in Karachi, Pakistan December 16, 2020. REUTERS/Akhtar Soomro

People light candles and oil lamps, in commemoration of the victims of an attack on the Army Public School (APS) in 2014, in Karachi, Pakistan December 16, 2020. REUTERS/Akhtar Soomro

Head of Ile-de-France Regional Health Agency (ARS) Aurelien Rousseau, French Education, Youth and Sports Minister Jean-Michel Blanquer and Director General of Assistance Publique-Hopitaux de Paris (AP-HP) Martin Hirsch speak to the press during their visit to the Emile Dubois Lycee where antigen testing for the coronavirus disease (COVID-19) is taking place, in Paris, France November 23, 2020. Ludovic Marin/Pool via REUTERS

Head of Ile-de-France Regional Health Agency (ARS) Aurelien Rousseau, French Education, Youth and Sports Minister Jean-Michel Blanquer and Director General of Assistance Publique-Hopitaux de Paris (AP-HP) Martin Hirsch speak to the press during their visit to the Emile Dubois Lycee where antigen testing for the coronavirus disease (COVID-19) is taking place, in Paris, France November 23, 2020. Ludovic Marin/Pool via REUTERS

French Education, Youth and Sports Minister Jean-Michel Blanquer and Director General of Assistance Publique-Hopitaux de Paris (AP-HP) Martin Hirsch speak with students during their visit to the Emile Dubois Lycee where antigen testing for the coronavirus disease (COVID-19) is taking place, in Paris, France November 23, 2020. Ludovic Marin/Pool via REUTERS

Infectious diseases specialist Gilles Pialoux poses during an interview with Reuters at the AP-HP Tenon hospital that treats people suffering from the coronavirus disease (COVID-19) in Paris, France, November 5, 2020. REUTERS/Christian Hartmann

Infectious diseases specialist Gilles Pialoux poses during an interview with Reuters at the AP-HP Tenon hospital that treats people suffering from the coronavirus disease (COVID-19) in Paris, France, November 5, 2020. REUTERS/Christian Hartmann

Infectious diseases specialist Gilles Pialoux poses during an interview with Reuters at the AP-HP Tenon hospital that treats people suffering from the coronavirus disease (COVID-19) in Paris, France, November 5, 2020. REUTERS/Christian Hartmann

Infectious diseases specialist Gilles Pialoux poses during an interview with Reuters at the AP-HP Tenon hospital that treats people suffering from the coronavirus disease (COVID-19) in Paris, France, November 5, 2020. REUTERS/Christian Hartmann

Health workers are seen at the infectious diseases unit of the AP-HP Tenon hospital that treats people suffering from the coronavirus disease (COVID-19) in Paris, France, November 5, 2020. REUTERS/Christian Hartmann

An health worker takes a break at the AP-HP Tenon hospital that treats people suffering from the coronavirus disease (COVID-19) in Paris, France, November 5, 2020. REUTERS/Christian Hartmann

3D-printed ballot boxes are seen in front of a displayed Twitter logo in this illustration taken November 4, 2020. REUTERS/Dado Ruvic/Illustration

French Prime Minister Jean Castex delivers a speech after a meeting at AP-HP headquarters in Paris, France October 15, 2020. Ludovic Marin/Pool via REUTERS

French Prime Minister Jean Castex delivers a speech past Director General of Assistance Publique-Hopitaux de Paris (AP-HP) Martin Hirsch after a meeting at AP-HP headquarters in Paris, France October 15, 2020. Ludovic Marin/Pool via REUTERS

French Prime Minister Jean Castex delivers a speech, flanked by Director General of Assistance Publique-Hopitaux de Paris (AP-HP) Martin Hirsch and Mayor of Paris Anne Hidalgo after a meeting at AP-HP headquarters in Paris, France October 15, 2020. Ludovic Marin/Pool via REUTERS

French Prime Minister Jean Castex delivers a speech, flanked by Director General of Assistance Publique-Hopitaux de Paris (AP-HP) Martin Hirsch, Mayor of Paris Anne Hidalgo, Head of Ile-de-France Regional Health Agency (ARS) Aurelien Rousseau and Ile-de-France Prefect Marc Guillaume after a meeting at AP-HP headquarters in Paris, France October 15, 2020. Ludovic Marin/Pool via REUTERS

French Prime Minister Jean Castex delivers a speech flanked by Mayor of Paris Anne Hidalgo after a meeting at AP-HP headquarters in Paris, France October 15, 2020. Ludovic Marin/Pool via REUTERS French Prime Minister Jean Castex delivers a speech flanked by Mayor of Paris Anne Hidalgo (C) after a meeting at Ap-HP headquarters in Paris on October 15, 2020. - France on October 14, 2020 became the latest European country to toughen anti-coronavirus measures, imposing a curfew in Paris and eight other cities from October 17. (Photo by Ludovic MARIN / POOL / AFP)

French Prime Minister Jean Castex delivers a speech flanked by Mayor of Paris Anne Hidalgo after a meeting at Ap-HP headquarters in Paris, France October 15, 2020. Ludovic Marin/Pool via REUTERS

Mayor of Paris Anne Hidalgo looks on during an afternoon of visits and meeting at AP-HP headquarters in Paris, France October 15, 2020. Ludovic Marin/Pool via REUTERS

Head of Ile-de-France Regional Health Agency (ARS) Aurelien Rousseau, Director General of Assistance Publique-Hopitaux de Paris (AP-HP) Martin Hirsch and Ile-de-France Prefect Marc Guillaume chat during a meeting of visit and meeting at AP-HP headquarters in Paris, France October 15, 2020. Ludovic Marin/Pool via REUTERS

Mayor of Paris Anne Hidalgo looks on during an afternoon of visits and meeting at AP-HP headquarters in Paris, France October 15, 2020. Ludovic Marin/Pool via REUTERS

Mayor of Paris Anne Hidalgo looks on during an afternoon of visits and meeting at AP-HP headquarters in Paris, France October 15, 2020. Ludovic Marin/Pool via REUTERS

Mayor of Paris Anne Hidalgo and French Prime Minister Jean Castex listen to the Director General of Assistance Publique-Hopitaux de Paris (AP-HP) Martin Hirsch, during a AP-HP meeting in Paris, France October 15, 2020. Ludovic Marin/Pool via REUTERS

Mayor of Paris Anne Hidalgo, French Prime Minister Jean Castex and Martin Hirsch, the director general of the AP-HP (Assistance Publique - Hopitaux de Paris) attend an AP-HP meeting in Paris, France October 15, 2020. Ludovic Marin/Pool via REUTERS

Mayor of Paris Anne Hidalgo and French Prime Minister Jean Castex sanitise their hands following an AP-HP (Assistance Publique - Hopitaux de Paris) meeting in Paris, France October 15, 2020. Ludovic Marin/Pool via REUTERS

French Prime Minister Jean Castex listens to Martin Hirsch, the Director General of Assistance Publique-Hopitaux de Paris (AP-HP), during a AP-HP meeting in Paris, France October 15, 2020. Ludovic Marin/Pool via REUTERS

Mayor of Paris Anne Hidalgo and French Prime Minister Jean Castex listen to the Director General of Assistance Publique-Hopitaux de Paris (AP-HP) Martin Hirsch, during a AP-HP meeting in Paris, France October 15, 2020. Ludovic Marin/Pool via REUTERS

Mayor of Paris Anne Hidalgo and French Prime Minister Jean Castex listen to the Director General of Assistance Publique-Hopitaux de Paris (AP-HP) Martin Hirsch, during a AP-HP meeting in Paris, France October 15, 2020. Ludovic Marin/Pool via REUTERS

Mayor of Paris Anne Hidalgo and French Prime Minister Jean Castex sanitise their hands following an AP-HP meeting in Paris, France October 15, 2020. Ludovic Marin/Pool via REUTERS

La Republique en Marche (LREM) deputy Pacome Rupin, Head of Ile-de-France Regional Health Agency (ARS) Aurelien Rousseau, French Prime Minister Jean Castex and Mayor of Paris Anne Hidalgo walk towards AP-HP (Assistance Publique - Hopitaux de Paris) headquarters in Paris, France October 15, 2020. Ludovic Marin/Pool via REUTERS

La Republique en Marche (LREM) deputy Pacome Rupin, Director General of Assistance Publique-Hopitaux de Paris (AP-HP) Martin Hirsch, Head of Ile-de-France Regional Health Agency (ARS) Aurelien Rousseau, French Prime Minister Jean Castex and Mayor of Paris Anne Hidalgo walk towards AP-HP (Assistance Publique - Hopitaux de Paris) headquarters for a meeting in Paris, France October 15, 2020. Ludovic Marin/Pool via REUTERS

La Republique en Marche (LREM) deputy Pacome Rupin, Head of Ile-de-France Regional Health Agency (ARS) Aurelien Rousseau, French Prime Minister Jean Castex and Mayor of Paris Anne Hidalgo walk towards AP-HP (Assistance Publique - Hopitaux de Paris) headquarters in Paris, France October 15, 2020. Ludovic Marin/Pool via REUTERS

President Donald Trump, accompanied by Dr. Deborah Birx, White House coronavirus response coordinator, speaks during a meeting with Arizona Gov. Doug Ducey in the Oval Office of the White House in Washington, Wednesday, Aug. 5, 2020. (AP Photo/Andrew Harnik, Pool) /Pool via REUTERS

General view of the highway AP7 near the Spanish-French border as Spain reopens its borders to most European visitors after the coronavirus lockdown coinciding with the end of the state of emergency in the country, in La Jonquera, north of Girona, Spain June 21, 2020. REUTERS/Albert Gea

General view of the highway AP7 near the Spanish-French border as Spain reopens its borders to most European visitors after the coronavirus lockdown coinciding with the end of the state of emergency in the country, in La Jonquera, north of Girona, Spain June 21, 2020. REUTERS/Albert Gea

Philonise Floyd, brother, of George Floyd pauses at the casket during a funeral service for Floyd at the Fountain of Praise church Tuesday, June 9, 2020, in Houston. (AP Photo/David J. Phillip, Pool) /Pool via REUTERS

Houston Texans NFL player J. J. Watt, pauses by the casket of George Floyd during a funeral service for Floyd at The Fountain of Praise church Tuesday, June 9, 2020, in Houston. (AP Photo/David J. Phillip, Pool) /Pool via REUTERS

AP photojournalist John Minchillo photographs a protester throwing tear gas during continued demonstrations in reaction to the death in Minneapolis police custody of George Floyd, in Minneapolis, Minnesota, U.S., May 30, 2020. Picture taken on May 30, 2020. REUTERS/Lucas Jackson

AP photojournalists John Minchillo and Julio Cortez cover continued demonstrations in reaction to the death in Minneapolis police custody of George Floyd, in Minneapolis, Minnesota, U.S., May 31, 2020. Picture taken May 31, 2020. REUTERS/Lucas Jackson

AP photojournalist John Minchillo takes photographs during continued demonstrations in reaction to the death in Minneapolis police custody of George Floyd, in Minneapolis, Minnesota, U.S., May 30, 2020. Picture taken May 30, 2020. REUTERS/Lucas Jackson

AP photojournalist Julio Cortez works during continued demonstrations in reaction to the death in Minneapolis police custody of George Floyd, in Minneapolis, Minnesota, U.S., May 30, 2020. Picture taken on May 30, 2020. REUTERS/Lucas Jackson

A pharmacist displays a sticker with the name of tocilizumab molecule, which is used in the treatment of rheumatoid arthritis, at the pharmacy of Cambrai hospital, France, April 28, 2020. French Health Ministry mentioned in a statement "promising results" in a clinical trial, led by Paris University Hospital AP-HP, involving tocilizumab. REUTERS/Pascal Rossignol

A pharmacist displays a box of tocilizumab, which is used in the treatment of rheumatoid arthritis, at the pharmacy of Cambrai hospital, France, April 28, 2020. French Health Ministry mentioned in a statement "promising results" in a clinical trial, led by Paris University Hospital AP-HP, involving tocilizumab. REUTERS/Pascal Rossignol

A pharmacist displays a box of tocilizumab, which is used in the treatment of rheumatoid arthritis, at the pharmacy of Cambrai hospital, France, April 28, 2020. French Health Ministry mentioned in a statement "promising results" in a clinical trial, led by Paris University Hospital AP-HP, involving tocilizumab. REUTERS/Pascal Rossignol

A pharmacist displays boxes of tocilizumab, which is used in the treatment of rheumatoid arthritis, at the pharmacy of Cambrai hospital, France, April 28, 2020. French Health Ministry mentioned in a statement "promising results" in a clinical trial, led by Paris University Hospital AP-HP, involving tocilizumab. REUTERS/Pascal Rossignol

Dogs are seen as an Ape van delivers coffee to customers, as the spread of the coronavirus disease (COVID-19) continues in Rome, Italy, April 27, 2020. REUTERS/Remo Casilli

A bartender wearing a protective face mask prepares coffee in an Ape van, as the spread of the coronavirus disease (COVID-19) continues in Rome, Italy, April 27, 2020. REUTERS/Remo Casilli

Customers wearing face masks drink coffee prepared in an Ape van, as the spread of the coronavirus disease (COVID-19) continues in Rome, Italy, April 27, 2020. REUTERS/Remo Casilli

A bartender prepares coffee next to an Ape van, as the spread of the coronavirus disease (COVID-19) continues in Rome, Italy, April 27, 2020. REUTERS/Remo Casilli

A bartender drives an Ape van as he deliveres breakfasts at home, as the spread of the coronavirus disease (COVID-19) continues in Rome, Italy, April 27, 2020. REUTERS/Remo Casilli

Barmen prepare breakfasts to be delivered at home in an Ape van, as the spread of the coronavirus disease (COVID-19) continues in Rome, Italy, April 27, 2020. REUTERS/Remo Casilli

A bartender prepares breakfasts to be delivered at home in an Ape van, as the spread of the coronavirus disease (COVID-19) continues in Rome, Italy, April 27, 2020. REUTERS/Remo Casilli

French associate professor in the infectious and tropical diseases department of Saint-Antoine Hospital (AP-HP), Paris ? France, Karine Lacombe speaks during a news conference with French Prime Minister in Paris, France March 28, 2020, on the eleventh day of a strict nationwide confinement seeking to halt the spread of COVID-19 disease. Geoffroy Van Der Hasselt/Pool via REUTERS

French President Emmanuel Macron speaks to the media next to AP-HP President Martin Hirsch, French Health and Solidarity Minister Olivier Veran, French Director General of Health Jerome Salomon and Francois Braun, president of Samu-Urgences de Franceafter, after a visit at the SAMU-SMUR call centre at the Necker Hospital, focused on COVID-19 coronavirus outbreak, in Paris, France, March 10, 2020. Ludovic Marin/Pool via REUTERS

French President Emmanuel Macron speaks to the media next to AP-HP President Martin Hirsch, French Health and Solidarity Minister Olivier Veran and French Director General of Health Jerome Salomon, after a visit at the SAMU-SMUR call centre at the Necker Hospital, focused on COVID-19 coronavirus outbreak, in Paris, France, March 10, 2020. Ludovic Marin/Pool via REUTERS

French President Emmanuel Macron, French Health and Solidarity Minister Olivier Veran and AP-HP President Martin Hirsch listen to professor Pierre Carli, director of the Necker hospital SAMU-SMUR emergency services, during a visit at the SAMU-SMUR call centre at the Necker Hospital, focused on COVID-19 coronavirus outbreak, in Paris, France, March 10, 2020. Ludovic Marin/Pool via REUTERS

French President Emmanuel Macron, French Health and Solidarity Minister Olivier Veran, AP-HP President Martin Hirsch and head of the Ile-de-France Regional Health Agency (ARS) Aurelien Rousseau listen to professor Pierre Carli, director of the Necker hospital SAMU-SMUR emergency services, during a visit at the Necker Hospital, focused on COVID-19 coronavirus outbreak, in Paris, France, March 10, 2020. Ludovic Marin/Pool via REUTERS

The shoes of first lady Melania Trump are seen at a state banquet at Rashtrapati Bhavan, Tuesday, Feb. 25, 2020, in New Delhi, India. (AP Photo/Alex Brandon, Pool)