Customers wait while dining on tables placed on the street outside a restaurant, during the gradual reopening of restaurant activities after the city government implemented new measures to prevent the spread of the coronavirus disease (COVID-19) in Mexico City, Mexico January 18, 2021. REUTERS/Henry Romero

Waiters wait for customers along tables placed on the street outside a restaurant, during the gradual reopening of restaurant activities after the city government implemented new measures to prevent the spread of the coronavirus disease (COVID-19) in Mexico City, Mexico January 18, 2021. REUTERS/Henry Romero

The "Field of Flags" is illuminated on the National Mall as the U.S Capitol Building is prepared for the inauguration of President-elect Joe Biden, in Washington, U.S., January 18, 2021. Joe Raedle/Pool via REUTERS

Blue lights are beamed into the sky over the "Field of Flags" on the National Mall as the U.S Capitol Building is prepared for the inauguration of President-elect Joe Biden, in Washington, U.S., January 18, 2021. Joe Raedle/Pool via REUTERS

The "Field of Flags" is illuminated on the National Mall as the U.S Capitol Building is prepared for the inauguration of President-elect Joe Biden, in Washington, U.S., January 18, 2021. Joe Raedle/Pool via REUTERS

Lights shine up from the U.S. National Mall as preparations continue for the inauguration of President-elect Joe Biden in Washington, U.S., January 18, 2021. REUTERS/Joshua Roberts

Spotlights illuminate the sky from the "field of flags" on the National Mall in honor of the upcoming inauguration of U.S. President-elect Joe Biden in Washington, U.S., January 18, 2021. REUTERS/Jim Bourg

Lights shine up from the U.S. National Mall as preparations continue for the inauguration of President-elect Joe Biden in Washington, U.S., January 18, 2021. REUTERS/Joshua Roberts

Blue lights are beamed into the sky over the "Field of Flags" on the National Mall as the U.S Capitol Building is prepared for the inauguration ceremonies for President-elect Joe Biden, in Washington, U.S., January 18, 2021. Joe Raedle/Pool via REUTERS

Lights shine up from the U.S. National Mall as preparations continue for the inauguration of President-elect Joe Biden in Washington, U.S., January 18, 2021. REUTERS/Joshua Roberts

A waiter attends customers on tables placed on the terrace of the restaurant, during the gradual reopening of restaurant activities after the city government implemented new measures to prevent the spread of the coronavirus disease (COVID-19) in Mexico City, Mexico January 18, 2021. REUTERS/Henry Romero

The "Field of Flags" is illuminated on the National Mall as the U.S Capitol Building is prepared for the inauguration ceremonies for President-elect Joe Biden, in Washington, U.S., January 18, 2021. Joe Raedle/Pool via REUTERS

A waiter attends to customers on tables placed on the street outside the restaurant, during the gradual reopening of restaurant activities after the city government implemented new measures to prevent the spread of the coronavirus disease (COVID-19) in Mexico City, Mexico January 18, 2021. REUTERS/Henry Romero

A general view of people eating at tables distributed in the parking lot of the Vips restaurant, during the gradual reopening of restaurant activities after the city government implemented new measures to prevent the spread of the coronavirus disease (COVID-19) in Mexico City, Mexico January 18, 2021. REUTERS/Henry Romero

Spotlights illuminate the sky from the "field of flags" on the National Mall in honor of the upcoming inauguration of U.S. President-elect Joe Biden in Washington, U.S., January 18, 2021. REUTERS/Jim Bourg

Spotlights illuminate the sky from the "field of flags" on the National Mall in honor of the upcoming inauguration of U.S. President-elect Joe Biden in Washington, U.S., January 18, 2021. REUTERS/Jim Bourg

Spotlights illuminate the sky from the "field of flags" on the National Mall in honor of the upcoming inauguration of U.S. President-elect Joe Biden in Washington, U.S., January 18, 2021. REUTERS/Jim Bourg

Spotlights illuminate the sky from the "field of flags" on the US national mall in honor of the upcoming inauguration of U.S. President-elect Joe Biden in Washington, U.S., January 18, 2021. REUTERS/Jim Bourg

A general view of people eating at tables distributed in the parking lot of the Vips restaurant, during the gradual reopening of restaurant activities after the city government implemented new measures to prevent the spread of the coronavirus disease (COVID-19) in Mexico City, Mexico January 18, 2021. REUTERS/Henry Romero

Members of the U.S. National Guard arrive, as the U.S. Capitol goes into lockdown during the dress rehearsal ahead of U.S. President-elect Joe Biden's inauguration in Washington, U.S., January 18, 2021. Rod Lamkey/Pool via REUTERS

Spotlights illuminate the sky from the "field of flags" on the US national mall in honor of the upcoming inauguration of U.S. President-elect Joe Biden in Washington, U.S., January 18, 2021. REUTERS/Jim Bourg

Honduran migrants, some of them riding on top of trailer trucks, try to cross a police checkpoint to continue their trip along with others in a migrant caravan toward the United States, in Vado Hondo, Guatemala January 18, 2021. REUTERS/Luis Echeverria

Kyuta Kumagai, 10, wears a protective face mask during class as he raises his hand to answer a question at Meiji Elementary School, during the coronavirus disease (COVID-19) outbreak, in Tokyo, Japan, December 16, 2020. REUTERS/Kim Kyung-Hoon SEARCH "KYUNG-HOON SUMO" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES

Kyuta Kumagai, 10, wears a protective face mask as he travels to school with his classmates, during the coronavirus disease (COVID-19) outbreak, in Tokyo, Japan, December 16, 2020. REUTERS/Kim Kyung-Hoon SEARCH "KYUNG-HOON SUMO" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES

Kyuta Kumagai, 10, and his family wear protective face masks as they pray for Kyuta's success as a sumo wrestler at Nominosukune Shrine, where the God of Sumo is said to reside, during the Hatsumode, the traditional first visit to a shrine or temple on the first day of the new year, during the coronavirus disease (COVID-19) outbreak, in Tokyo, Japan, January 1, 2021. REUTERS/Kim Kyung-Hoon SEARCH "KYUNG-HOON SUMO" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES

Kyuta Kumagai, 10, wears a protective face mask as he spends time with his friends at Meiji Elementary School, during the coronavirus disease (COVID-19) outbreak, in Tokyo, Japan, December 16, 2020. REUTERS/Kim Kyung-Hoon SEARCH "KYUNG-HOON SUMO" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES

Kyuta Kumagai, 10, wears a protective face mask as he talks to other students in a group discussion held in class, during the coronavirus disease (COVID-19) outbreak, at Meiji Elementary School in Tokyo, Japan, December 16, 2020. REUTERS/Kim Kyung-Hoon SEARCH "KYUNG-HOON SUMO" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES

Spotlights illuminate the sky from the "field of flags" on the US national mall in honor of the upcoming inauguration of U.S. President-elect Joe Biden in Washington, U.S., January 18, 2021. REUTERS/Jim Bourg

Honduran migrants, some of them riding on top of trailer trucks, try to cross a police checkpoint to continue their trip along with others in a migrant caravan toward the United States, in Vado Hondo, Guatemala January 18, 2021. REUTERS/Luis Echeverria

Honduran migrants, some of them riding on a trailer truck, try to cross a police checkpoint to continue their trip along with others in a migrant caravan toward the United States, in Vado Hondo, Guatemala January 18, 2021. REUTERS/Luis Echeverria

A Honduran migrant holds his country's flag as Guatemalan security forces clear a road where the migrants have been camping after authorities halted their trek to the United States, in Vado Hondo, Guatemala January 18, 2021. REUTERS/Luis Echeverria

The U.S. Capitol Building is prepared for the inauguration ceremonies for President-elect Joe Biden as the "Field of Flags" are placed on the ground on the National Mall, in Washington, U.S., January 18, 2021. Joe Raedle/Pool via REUTERS

The U.S. Capitol Building is prepared for the inauguration ceremonies for President-elect Joe Biden as the "Field of Flags" are placed on the ground on the National Mall, in Washington, U.S., January 18, 2021. Joe Raedle/Pool via REUTERS

The White House is seen from the Washington Monument as the country awaits the inauguration of U.S. President-elect Joe Biden and Vice President-elect Kamala Harris, in Washington, U.S., January 18, 2021. Joe Raedle/Pool via REUTERS

The U.S. Capitol Building is prepared for the inauguration ceremonies for President-elect Joe Biden as the "Field of Flags" are placed on the ground on the National Mall, in Washington, U.S., January 18, 2021. Joe Raedle/Pool via REUTERS

The White House is seen from the Washington Monument as the country awaits the inauguration of U.S. President-elect Joe Biden and Vice President-elect Kamala Harris, in Washington, U.S., January 18, 2021. Joe Raedle/Pool via REUTERS

The White House is seen from the Washington Monument as the country awaits the inauguration of U.S. President-elect Joe Biden and Vice President-elect Kamala Harris, in Washington, U.S., January 18, 2021. Joe Raedle/Pool via REUTERS

The White House is seen from the Washington Monument as the country awaits the inauguration of U.S. President-elect Joe Biden and Vice President-elect Kamala Harris, in Washington, U.S., January 18, 2021. Joe Raedle/Pool via REUTERS

The White House is seen from the Washington Monument as the country awaits the inauguration of U.S. President-elect Joe Biden and Vice President-elect Kamala Harris, in Washington, U.S., January 18, 2021. Joe Raedle/Pool via REUTERS

The U.S. Capitol Building is prepared for the inauguration ceremonies for President-elect Joe Biden as the "Field of Flags" are placed on the ground on the National Mall, in Washington, U.S., January 18, 2021. Joe Raedle/Pool via REUTERS

The U.S. Capitol Building is prepared for the inauguration ceremonies for President-elect Joe Biden as the "Field of Flags" are placed on the ground on the National Mall, in Washington, U.S., January 18, 2021. Joe Raedle/Pool via REUTERS

Honduran migrants leave an area where Guatemalan security forces cleared a road where the migrants have been camping after authorities halted their trek to the United States, in Vado Hondo, Guatemala January 18, 2021. REUTERS/Luis Echeverria

The U.S. Capitol Building is prepared for the inauguration ceremonies for President-elect Joe Biden as the "Field of Flags" are placed on the ground on the National Mall, in Washington, U.S., January 18, 2021. Joe Raedle/Pool via REUTERS

Honduran migrants walk on the bed of a dry river near an area where Guatemalan security forces cleared a road where the migrants have been camping after authorities halted their trek to the United States, in Vado Hondo, Guatemala January 18, 2021. REUTERS/Luis Echeverria

Honduran migrants react while accompanied by a police officer after Guatemalan security forces cleared a road where the migrants have been camping after authorities halted their trek to the United States, in Vado Hondo, Guatemala January 18, 2021. REUTERS/Luis Echeverria

Honduran migrants are accompanied by a police officer after Guatemalan security forces cleared a road where the migrants have been camping after authorities halted their trek to the United States, in Vado Hondo, Guatemala January 18, 2021. REUTERS/Luis Echeverria

Actor and TV presenter Mourad Makram, actor Ahmad Dash, Professor of Mass Communications Mervat Abou Oaf, Scriptwriter Tamer Habib and Director of Tadwein Gender Research Center Amel Fahmy, talk during a debate in Tahrir campus at the American University (AUC) in Cairo, Egypt January 18, 2021. REUTERS/Sameh Elkhatib

A woman steps down to take a dip in the icy waters of the Istra river during Orthodox Epiphany celebrations in the town of Istra in the Moscow Region, January 19, 2021. REUTERS/Maxim Shemetov

People queue to take a dip in the icy waters of the Istra river during Orthodox Epiphany celebrations in the town of Istra in the Moscow Region, January 19, 2021. REUTERS/Maxim Shemetov

A man reacts after a dip in the icy waters of the Istra river during Orthodox Epiphany celebrations in the town of Istra in the Moscow Region, January 19, 2021. REUTERS/Maxim Shemetov

A man takes a dip in the icy waters of the Istra river during Orthodox Epiphany celebrations in the town of Istra in the Moscow Region, January 18, 2021. REUTERS/Maxim Shemetov

A man takes a dip in the icy waters of the Istra river during Orthodox Epiphany celebrations in the town of Istra in the Moscow Region, January 18, 2021. REUTERS/Maxim Shemetov

A man takes a dip in the icy waters of the Istra river during Orthodox Epiphany celebrations in the town of Istra in the Moscow Region, January 18, 2021. REUTERS/Maxim Shemetov

A man takes a dip in the icy waters of the Istra river during Orthodox Epiphany celebrations in the town of Istra in the Moscow Region, January 18, 2021. REUTERS/Maxim Shemetov

Relatives of patients hospitalised or receiving healthcare at home, who are mostly suffering from the coronavirus disease (COVID-19), gather to buy oxygen and fill cylinders at a private company in Manaus, Brazil January 18, 2021. REUTERS/Bruno Kelly

Relatives of patients hospitalised or receiving healthcare at home, who are mostly suffering from the coronavirus disease (COVID-19), gather to buy oxygen and fill cylinders at a private company in Manaus, Brazil January 18, 2021. REUTERS/Bruno Kelly

Relatives of patients hospitalised or receiving healthcare at home, who are mostly suffering from the coronavirus disease (COVID-19), gather to buy oxygen and fill cylinders at a private company in Manaus, Brazil January 18, 2021. REUTERS/Bruno Kelly

Relatives of patients hospitalised or receiving healthcare at home, who are mostly suffering from the coronavirus disease (COVID-19), gather to buy oxygen and fill cylinders at a private company in Manaus, Brazil January 18, 2021. REUTERS/Bruno Kelly

A person reacts as relatives of patients hospitalised or receiving healthcare at home, who are mostly suffering from the coronavirus disease (COVID-19), gather to buy oxygen and fill cylinders at a private company in Manaus, Brazil January 18, 2021. REUTERS/Bruno Kelly

Relatives of patients hospitalised or receiving healthcare at home, who are mostly suffering from the coronavirus disease (COVID-19), gather to buy oxygen and fill cylinders at a private company in Manaus, Brazil January 18, 2021. REUTERS/Bruno Kelly