Stuttgart Ballet company dancers take part in the performance "Social Distance Stacks" of conceptual artist Florian Mehnert at the John Cranko School in Stuttgart, Germany, February 26, 2021. Picture taken February 26, 2021. REUTERS/Ralph Orlowski

Stuttgart Ballet company dancers Elisa Badenes and Friedemann Vogel take part in performance "Social Distance Stacks" of conceptual artist Florian Mehnert at the John Cranko School in Stuttgart, Germany, February 26, 2021. Picture taken February 26, 2021. REUTERS/Ralph Orlowski

Stuttgart Ballet company dancer Elisa Badenes and a stagehand take part in performance "Social Distance Stacks" of conceptual artist Florian Mehnert at the John Cranko School in Stuttgart, Germany, February 26, 2021. Picture taken February 26, 2021. REUTERS/Ralph Orlowski

Stuttgart Ballet company dancers Elisa Badenes and Friedemann Vogel take part in performance "Social Distance Stacks" of conceptual artist Florian Mehnert at the John Cranko School in Stuttgart, Germany, February 26, 2021. Picture taken February 26, 2021. REUTERS/Ralph Orlowski

Conceptual artist Florian Mehnert and Stuttgart Ballet company dancer Friedemann Vogel take part in performance "Social Distance Stacks" of Florian Mehnert at the John Cranko School in Stuttgart, Germany, February 26, 2021. Picture taken February 26, 2021. REUTERS/Ralph Orlowski

Stuttgart Ballet company dancers Elisa Badenes and Friedemann Vogel take part in the performance "Social Distance Stacks" performance of conceptual artist Florian Mehnert at the John Cranko School in Stuttgart, Germany, February 26, 2021. Picture taken February 26, 2021. REUTERS/Ralph Orlowski

Stuttgart Ballet company dancers, Elisa Badenes and Friedemann Vogel take part in Mehnert's performance "Social Distance Stacks" at the John Cranko School in Stuttgart, Germany, February 26, 2021. Picture taken February 26, 2021. REUTERS/Ralph Orlowski

Stuttgart Ballet company dancers Elisa Badenes and Friedemann Vogel take part in the performance "Social Distance Stacks" of conceptual artist Florian Mehnert at the John Cranko School in Stuttgart, Germany, February 26, 2021. Picture taken February 26, 2021. REUTERS/Ralph Orlowski

Conceptual artist Florian Mehnert and Stuttgart Ballet company dancers Elisa Badenes and Friedemann Vogel take part in Mehnert's performance "Social Distance Stacks" at the John Cranko School in Stuttgart, Germany, February 26, 2021. Picture taken February 26, 2021. REUTERS/Ralph Orlowski

Conceptual artist Florian Mehnert and Stuttgart Ballet company dancer Friedemann Vogel take part in Mehnert's performance "Social Distance Stacks" at the John Cranko School in Stuttgart, Germany, February 26, 2021. Picture taken February 26, 2021. REUTERS/Ralph Orlowski

Stuttgart Ballet company dancers Elisa Badenes and Friedemann Vogel take part in the performance "Social Distance Stacks" of conceptual artist Florian Mehnert at the John Cranko School in Stuttgart, Germany, February 26, 2021. Picture taken February 26, 2021. REUTERS/Ralph Orlowski

Conceptual artist Florian Mehnert and Stuttgart Ballet company dancers take part in Mehnert's performance "Social Distance Stacks" at the John Cranko School in Stuttgart, Germany, February 26, 2021. Picture taken February 26, 2021. REUTERS/Ralph Orlowski

Stuttgart Ballet company dancers take part in the performance "Social Distance Stacks" of conceptual artist Florian Mehnert at the John Cranko School in Stuttgart, Germany, February 26, 2021. Picture taken February 26, 2021. REUTERS/Ralph Orlowski

Conceptual artist Florian Mehnert takes part in his performance "Social Distance Stacks" at the John Cranko School in Stuttgart, Germany, February 26, 2021. Picture taken February 26, 2021. REUTERS/Ralph Orlowski

Conceptual artist Florian Mehnert takes part in his performance "Social Distance Stacks" at the John Cranko School in Stuttgart, Germany, February 26, 2021. Picture taken February 26, 2021. REUTERS/Ralph Orlowski

Stuttgart Ballet company dancer Elisa Badenes takes part in the performance "Social Distance Stacks" of conceptual artist Florian Mehnert at the John Cranko School in Stuttgart, Germany, February 26, 2021. Picture taken February 26, 2021. REUTERS/Ralph Orlowski

Stuttgart Ballet company dancers Elisa Badenes and Friedemann Vogel take part in the performance "Social Distance Stacks" of conceptual artist Florian Mehnert at the John Cranko School in Stuttgart, Germany, February 26, 2021. Picture taken February 26, 2021. REUTERS/Ralph Orlowski

Stuttgart Ballet company dancers Elisa Badenes and Friedemann Vogel take part in the performance "Social Distance Stacks" of conceptual artist Florian Mehnert at the John Cranko School in Stuttgart, Germany, February 26, 2021. Picture taken February 26, 2021. REUTERS/Ralph Orlowski

Stuttgart Ballet company dancer Elisa Badenes takes part in the performance "Social Distance Stacks" of conceptual artist Florian Mehnert at the John Cranko School in Stuttgart, Germany, February 26, 2021. Picture taken February 26, 2021. REUTERS/Ralph Orlowski

Conceptual artist Florian Mehnert and Stuttgart Ballet company dancers Elisa Badenes and Friedemann Vogel take part in Mehnert's performance "Social Distance Stacks" at the John Cranko School in Stuttgart, Germany, February 26, 2021. Picture taken February 26, 2021. REUTERS/Ralph Orlowski

Conceptual artist Florian Mehnert poses for a picture during his performance "Social Distance Stacks" at the John Cranko School in Stuttgart, Germany, February 26, 2021. Picture taken February 26, 2021. REUTERS/Ralph Orlowski

Conceptual artist Florian Mehnert poses for a picture during his performance "Social Distance Stacks" at the John Cranko School in Stuttgart, Germany, February 26, 2021. Picture taken February 26, 2021. REUTERS/Ralph Orlowski

Conceptual artist Florian Mehnert poses for a picture during his performance "Social Distance Stacks" at the John Cranko School in Stuttgart, Germany, February 26, 2021. Picture taken February 26, 2021. REUTERS/Ralph Orlowski

Chester United under 13s players during a socially distance zoom training session, amid the coronavirus disease (COVID-19) outbreak, in Ouston, Britain February 27, 2021. Picture taken with drone. REUTERS/Lee Smith

Chester United under 13s players during a socially distance zoom training session, amid the coronavirus disease (COVID-19) outbreak, in Ouston, Britain February 27, 2021. Picture taken with drone. REUTERS/Lee Smith

Chester United under 13s players during a socially distance zoom training session, amid the coronavirus disease (COVID-19) outbreak, in Ouston, Britain February 27, 2021. Picture taken with drone. REUTERS/Lee Smith

Chester United under 13s players during a socially distance zoom training session, amid the coronavirus disease (COVID-19) outbreak, in Ouston, Britain February 27, 2021. Picture taken with drone. REUTERS/Lee Smith

Chester United under 13s players during a socially distance zoom training session, amid the coronavirus disease (COVID-19) outbreak, in Ouston, Britain February 27, 2021. Picture taken with drone. REUTERS/Lee Smith

People observe social distancing as they watch U.S. President Joe Biden speak after touring a Federal Emergency Management Agency (FEMA) vaccination facility for the coronavirus disease (COVID-19) at NRG Stadium in Houston, Texas, U.S., February 26, 2021. REUTERS/Jonathan Ernst

Madame Tussauds's wax figure of Jon Hamm stands at the bar, to comply with coronavirus disease (COVID-19) social distancing requirements, at Peter Luger Steak House in Brooklyn, New York U.S., February 26, 2021. REUTERS/Brendan McDermid

Madame Tussauds's wax figure of Audrey Hepburn sits at an empty table to comply with coronavirus disease (COVID-19) social distancing requirements in a dining room at Peter Luger Steak House in Brooklyn, New York U.S., February 26, 2021. REUTERS/Brendan McDermid

Madame Tussauds's wax figure of Al Roker stands at a wait station, to comply with coronavirus disease (COVID-19) social distancing requirements in a dining room at Peter Luger Steak House in Brooklyn, New York U.S., February 26, 2021. REUTERS/Brendan McDermid

Madame Tussauds's wax figure of Jon Hamm stands at the bar, to comply with coronavirus disease (COVID-19) social distancing requirements, at Peter Luger Steak House in Brooklyn, New York U.S., February 26, 2021. REUTERS/Brendan McDermid

Madame Tussauds's wax figure of Jon Hamm holds a drink while it stands at the bar, to comply with coronavirus disease (COVID-19) social distancing requirements, at Peter Luger Steak House in Brooklyn, New York U.S., February 26, 2021. REUTERS/Brendan McDermid

Madame Tussauds's wax figure of Audrey Hepburn sits at an empty table to comply with coronavirus disease (COVID-19) social distancing requirements in a dining room at Peter Luger Steak House in Brooklyn, New York U.S., February 26, 2021. REUTERS/Brendan McDermid

A diner enjoys a meal as Madame Tussauds's wax figure of Jimmy Fallon sits at an empty table, to comply with coronavirus disease (COVID-19) social distancing requirements, at Peter Luger Steak House in Brooklyn, New York U.S., February 26, 2021. REUTERS/Brendan McDermid

Madame Tussauds's wax figure of Jon Hamm stands at the bar, to comply with coronavirus disease (COVID-19) social distancing requirements, at Peter Luger Steak House in Brooklyn, New York U.S., February 26, 2021. REUTERS/Brendan McDermid

A diner poses with Madame Tussauds's wax figure of Jon Hamm at the bar, to comply with coronavirus disease (COVID-19) social distancing requirements, at Peter Luger Steak House in Brooklyn, New York U.S., February 26, 2021. REUTERS/Brendan McDermid

A social distancing marker is seen inside a temporary isolation room ahead of in-person learning, amid the coronavirus disease (COVID-19) pandemic, at the Jefferson-Houston School in Alexandria, Virginia, U.S., February 23, 2021. REUTERS/Tom Brenner

A social distancing marker is displayed along a hallway ahead of in-person learning, amid the coronavirus disease (COVID-19) pandemic, at the Jefferson-Houston School in Alexandria, Virginia, U.S., February 23, 2021. REUTERS/Tom Brenner

Students' desks are arranged apart for social distancing inside a classroom ahead of in-person learning, amid the coronavirus disease (COVID-19) pandemic, at the Jefferson-Houston School in Alexandria, Virginia, U.S., February 23, 2021. REUTERS/Tom Brenner

A social distancing sign is seen, amid the outbreak of the coronavirus disease (COVID-19), in Buckingham, Britain, February 23, 2021. REUTERS/Andrew Boyers

People keep social distancing outside a bank, amid the outbreak of the coronavirus disease (COVID-19), in Buckingham, Britain, February 23, 2021. REUTERS/Andrew Boyers

A volunteer holds a social distancing sign at the International Defence Exhibition in Abu Dhabi, United Arab Emirates February 22, 2021. REUTERS/Khushnum Bhandari

The San Francisco City Hall is seen in the distance as crews work to move a 139-year-old Victorian house, known as the Englander House, down Fulton Street to its new location, as the original site is to be used to build a 48-unit, eight-story apartment building, in San Francisco, California, U.S. February 21, 2021. REUTERS/Brittany Hosea-Small

A social distancing sign is seen at a restroom in South Florida Fairgrounds' iTHINK Financial Amphitheater during Palm Beach Opera's Outdoor Festival, amid the coronavirus disease (COVID-19) pandemic, in West Palm Beach, Florida, U.S., February 19, 2021. REUTERS/Marco Bello

Family and friends sit in socially distanced rows at the funeral of Dwight Morgan, 52, who died from complications from the coronavirus disease (COVID-19), at St. Paul AME Church in Houston, Texas, U.S., January 30, 2021. Each attendee had their temperature checked and was asked to use hand sanitizer upon arrival to the church. REUTERS/Callaghan O'Hare SEARCH "FUNERALS O'HARE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES

Soccer Football - Europa League - Round of 32 First Leg - Dynamo Kyiv v Club Brugge - NSC Olympiyskiy, Kyiv, Ukraine - February 18, 2021 Fans in the stands socially distanced during the match REUTERS/Valentyn Ogirenko

People, wearing protective face masks, stand in a queue at a coronavirus disease (COVID-19) testing center installed inside in the Kursaal concert hall in Dunkirk, France, February 18, 2021. The sign reads "Please respect social distancing and the line". REUTERS/Pascal Rossignol

Parishioners line up outside the Catedral Primada de Bogota preserving social distance to receive the ash cross during Ash Wednesday, as a part of new protocols during the coronavirus disease (COVID-19) pandemic in Bogota, Colombia February 17, 2021. REUTERS/Luisa Gonzalez

Pews are taped off and social distancing markers are seen at Rathmines Church Of Mary Immaculate Refuge of Sinners during Ash Wednesday, amid the outbreak of the coronavirus disease (COVID-19), in Dublin Ireland. February 17, 2021. REUTERS/Clodagh Kilcoyne

School desks with markers on them in order to respect social distance are seen during the first day of the reactivation of face-to-face classes, as the outbreak of the coronavirus disease (COVID-19) continues, in Buenos Aires, Argentina February 17, 2021. REUTERS/Agustin Marcarian

An employee marks a school desk in order to respect social distance during the first day of the reactivation of face-to-face classes, as the outbreak of the coronavirus disease (COVID-19) continues, in Buenos Aires, Argentina February 17, 2021. REUTERS/Agustin Marcarian

An employee marks a school bench in order to respect social distance during the first day of the reactivation of face-to-face classes, as the outbreak of the coronavirus disease (COVID-19) continues, in Buenos Aires, Argentina February 17, 2021. REUTERS/Agustin Marcarian

Willie Gude practices social distancing as he attends mass at Saints Peter and Paul Catholic Church in Atlanta, Georgia, U.S. February 14, 2021. Picture taken February 14, 2021. REUTERS/Chris Aluka Berry

People practice social distancing and give each other the sign of peace, instead of than shaking hands, during mass at Saints Peter and Paul Catholic Church in Atlanta, Georgia, U.S. February 14, 2021. Picture taken February 14, 2021. REUTERS/Chris Aluka Berry

Carole Edouard practices social distancing as she attends mass at Saints Peter and Paul Catholic Church in Atlanta, Georgia, U.S. February 14, 2021. Picture taken February 14, 2021. REUTERS/Chris Aluka Berry

Filipino Catholics maintain social distancing to prevent the spread of the coronavirus disease (COVID-19) during mass on Ash Wednesday at Baclaran Church, Paranaque City, Metro Manila, Philippines, February 17, 2021. REUTERS/Eloisa Lopez

A Filipino Catholic and his dog maintain social distancing to prevent the spread of the coronavirus disease (COVID-19) during mass on Ash Wednesday at Baclaran Church, Paranaque City, Metro Manila, Philippines, February 17, 2021. REUTERS/Eloisa Lopez

Filipino Catholics maintain social distancing to prevent the spread of the coronavirus disease (COVID-19) during mass on Ash Wednesday at Baclaran Church, Paranaque City, Metro Manila, Philippines, February 17, 2021. REUTERS/Eloisa Lopez