British Prime Minister Boris Johnson meets staff and patients at Barnet FC's ground, The Hive, which is being used as a coronavirus vaccination centre, in north London, Britain January 25, 2021. Stefan Rousseau/Pool via REUTERS

British Prime Minister Boris Johnson meets staff and patients at Barnet FC's ground, The Hive, which is being used as a coronavirus vaccination centre, in north London, Britain January 25, 2021. Stefan Rousseau/Pool via REUTERS

A demonstrator wearing a face mask attends a protest held by business owners against the restrictive measures put in place to fight the coronavirus disease (COVID-19) infections, in Rome, Italy, January 25, 2021. The placard reads "Liars". REUTERS/Guglielmo Mangiapane

British Prime Minister Boris Johnson meets staff and patients at Barnet FC's ground, The Hive, which is being used as a coronavirus vaccination centre, in north London, Britain January 25, 2021. Stefan Rousseau/Pool via REUTERS

A demonstrator wearing a face mask attends a protest held by business owners against the restrictive measures put in place to fight the coronavirus disease (COVID-19) infections, in Rome, Italy, January 25, 2021. The placard reads "Liars". REUTERS/Guglielmo Mangiapane

Alpine Skiing - Men's Super-G - Kitzbuehel, Austria - January 25, 2021 Austria's Daniel Danklmaier in action REUTERS/Lisi Niesner

British Prime Minister Boris Johnson watches a patient receiving a dose of the Oxford/AstraZeneca COVID-19 vaccine during a visit to Barnet FC's ground at The Hive, which is being used as a coronavirus vaccination centre, in north London, Britain January 25, 2021. Stefan Rousseau/Pool via REUTERS

British Prime Minister Boris Johnson watches a patient receiving a dose of the Oxford/AstraZeneca COVID-19 vaccine during a visit to Barnet FC's ground at The Hive, which is being used as a coronavirus vaccination centre, in north London, Britain January 25, 2021. Stefan Rousseau/Pool via REUTERS

Paris Mayor Anne Hidalgo (C) arrives with a delegation before a meeting with European Council President at the EU headquarters in Brussels, Belgium January 25, 2021. John Thys/Pool via REUTERS

Alpine Skiing - Men's Super-G - Kitzbuehel, Austria - January 25, 2021 Austria's Daniel Danklmaier reacts after his run REUTERS/Leonhard Foeger

Robot Franziska cleans the floor as a replacement for the missing cleaning personnel due to the coronavirus disease (COVID-19) pandemic during a three-week test phase at the Neuperlach hospital in Munich, Germany, January 25, 2021. REUTERS/Andreas Gebert

British Prime Minister Boris Johnson meets staff and patients at Barnet FC's ground, The Hive, which is being used as a coronavirus vaccination centre, in north London, Britain January 25, 2021. Stefan Rousseau/Pool via REUTERS

British Prime Minister Boris Johnson meets staff and patients at Barnet FC's ground, The Hive, which is being used as a coronavirus vaccination centre, in north London, Britain January 25, 2021. Stefan Rousseau/Pool via REUTERS

British Prime Minister Boris Johnson meets staff and patients at Barnet FC's ground, The Hive, which is being used as a coronavirus vaccination centre, in north London, Britain January 25, 2021. Stefan Rousseau/Pool via REUTERS

British Prime Minister Boris Johnson meets staff and patients at Barnet FC's ground, The Hive, which is being used as a coronavirus vaccination centre, in north London, Britain January 25, 2021. Stefan Rousseau/Pool via REUTERS

Robot Franziska cleans the floor as a replacement for the missing cleaning personnel due to the coronavirus disease (COVID-19) pandemic during a three-week test phase at the Neuperlach hospital in Munich, Germany, January 25, 2021. REUTERS/Andreas Gebert

A demonstrator holds Italian flags during a protest held by business owners against the restrictive measures put in place to fight the coronavirus disease (COVID-19) infections, in Rome, Italy, January 25, 2021. The placard reads "Liars". REUTERS/Guglielmo Mangiapane

Alpine Skiing - Men's Super-G - Kitzbuehel, Austria - January 25, 2021 Switzerland's Marco Odermatt in action REUTERS/Lisi Niesner

Alpine Skiing - Men's Super-G - Kitzbuehel, Austria - January 25, 2021 Austria's Vincent Kriechmayr in action REUTERS/Lisi Niesner

Robot Franziska cleans the floor as a replacement for the missing cleaning personnel due to the coronavirus disease (COVID-19) pandemic during a three-week test phase at the Neuperlach hospital in Munich, Germany, January 25, 2021. REUTERS/Andreas Gebert

Portugal's Minister of Maritime Affairs Ricardo Serrao Santos rings the bell during a foreign ministers' meeting at the EU headquarters in Brussels, Belgium January 25, 2021. John Thys/Pool via REUTERS

Portugal's Minister of Maritime Affairs Ricardo Serrao Santos looks on during a foreign ministers' meeting at the EU headquarters in Brussels, Belgium January 25, 2021. John Thys/Pool via REUTERS

A demonstrator holds a placard during a protest held by business owners against the restrictive measures put in place to fight the coronavirus disease (COVID-19) infections, in Rome, Italy, January 25, 2021. The placard reads "Liars". REUTERS/Guglielmo Mangiapane

Robot Franziska cleans the floor as a replacement for the missing cleaning personnel due to the coronavirus disease (COVID-19) pandemic during a three-week test phase at the Neuperlach hospital in Munich, Germany, January 25, 2021. REUTERS/Andreas Gebert

Portugal's Foreign Minister Augusto Santos Silva (C) talks with Luxembourg's counterpart Jean Asselborn during a foreign ministers' meeting at the EU headquarters in Brussels, Belgium January 25, 2021. John Thys/Pool via REUTERS

Alpine Skiing - Men's Super-G - Kitzbuehel, Austria - January 25, 2021 France's Nils Allegre in action REUTERS/Lisi Niesner

Alpine Skiing - Men's Super-G - Kitzbuehel, Austria - January 25, 2021 France's Nils Allegre crashes during his run REUTERS/Leonhard Foeger

Alpine Skiing - Men's Super-G - Kitzbuehel, Austria - January 25, 2021 France's Nils Allegre in action REUTERS/Lisi Niesner

British Prime Minister Boris Johnson sees how a dose of the Oxford/AstraZeneca COVID-19 vaccine is prepared, with nurse Tracey Wilkinson, at Barnet FC's ground at The Hive, which is being used as a coronavirus vaccination centre, in north London, Britain January 25, 2021. Stefan Rousseau/Pool via REUTERS

French Foreign Minister Jean-Yves Le Drian (L) talks with Dutch counterpart Stef Blok (R) during a foreign ministers' meeting at the EU headquarters in Brussels, Belgium January 25, 2021. John Thys/Pool via REUTERS

Alpine Skiing - Men's Super-G - Kitzbuehel, Austria - January 25, 2021 France's Nils Allegre in action REUTERS/Lisi Niesner

British Prime Minister Boris Johnson sees how a dose of the Oxford/AstraZeneca COVID-19 vaccine is prepared, with nurse Tracey Wilkinson, at Barnet FC's ground at The Hive, which is being used as a coronavirus vaccination centre, in north London, Britain January 25, 2021. Stefan Rousseau/Pool via REUTERS

British Prime Minister Boris Johnson sees how a dose of the Oxford/AstraZeneca COVID-19 vaccine is prepared, with nurse Tracey Wilkinson, at Barnet FC's ground at The Hive, which is being used as a coronavirus vaccination centre, in north London, Britain January 25, 2021. Stefan Rousseau/Pool via REUTERS

British Prime Minister Boris Johnson sees how a dose of the Oxford/AstraZeneca COVID-19 vaccine is prepared, with nurse Tracey Wilkinson, at Barnet FC's ground at The Hive, which is being used as a coronavirus vaccination centre, in north London, Britain January 25, 2021. Stefan Rousseau/Pool via REUTERS

British Prime Minister Boris Johnson sees how a dose of the Oxford/AstraZeneca COVID-19 vaccine is prepared, with nurse Tracey Wilkinson, at Barnet FC's ground at The Hive, which is being used as a coronavirus vaccination centre, in north London, Britain January 25, 2021. Stefan Rousseau/Pool via REUTERS

Syringes and a dose of the Pfizer-BioNTech COVID-19 vaccine are seen at the elderly home Ballesol, as the coronavirus disease (COVID-19) outbreak continues, in Madrid, Spain January 25, 2021. REUTERS/Susana Vera

French Foreign Minister Jean-Yves Le Drian (L) talks with Croatian counterpart Gordon Grlic Radman (R) during a foreign ministers' meeting at the EU headquarters in Brussels, Belgium January 25, 2021. John Thys/Pool via REUTERS

British Prime Minister Boris Johnson sees how a dose of the Oxford/AstraZeneca COVID-19 vaccine is prepared for a mobile vaccination centre at Barnet FC's ground at The Hive, which is being used as a coronavirus vaccination centre, in north London, Britain January 25, 2021. Stefan Rousseau/Pool via REUTERS

British Prime Minister Boris Johnson sees how a dose of the Oxford/AstraZeneca COVID-19 vaccine is prepared for a mobile vaccination centre at Barnet FC's ground at The Hive, which is being used as a coronavirus vaccination centre, in north London, Britain January 25, 2021. Stefan Rousseau/Pool via REUTERS

British Prime Minister Boris Johnson sees how a dose of the Oxford/AstraZeneca COVID-19 vaccine is prepared for a mobile vaccination centre at Barnet FC's ground at The Hive, which is being used as a coronavirus vaccination centre, in north London, Britain January 25, 2021. Stefan Rousseau/Pool via REUTERS

Alpine Skiing - Men's Super-G - Kitzbuehel, Austria - January 25, 2021 Switzerland's Beat Feuz reacts after his run REUTERS/Leonhard Foeger

A general view shows Vivantes Humboldt hospital, which is under quarantine due to infections with a new coronavirus variant, amid the coronavirus disease (COVID-19) pandemic, in Berlin, Germany, January 25, 2021. REUTERS/Fabrizio Bensch

A general view shows Vivantes Humboldt hospital, which is under quarantine due to infections with a new coronavirus variant, amid the coronavirus disease (COVID-19) pandemic, in Berlin, Germany, January 25, 2021. REUTERS/Fabrizio Bensch

A general view shows Vivantes Humboldt hospital, which is under quarantine due to infections with a new coronavirus variant, amid the coronavirus disease (COVID-19) pandemic, in Berlin, Germany, January 25, 2021. REUTERS/Fabrizio Bensch

A general view shows Vivantes Humboldt hospital, which is under quarantine due to infections with a new coronavirus variant, amid the coronavirus disease (COVID-19) pandemic, in Berlin, Germany, January 25, 2021. REUTERS/Fabrizio Bensch

Pilar Mazas, 90, resident at the elderly home Ballesol, sits after receiving the second dose of the Pfizer-BioNTech COVID-19 vaccine, as the coronavirus disease (COVID-19) outbreak continues, in Madrid, Spain January 25, 2021. REUTERS/Susana Vera

Alpine Skiing - Men's Super-G - Kitzbuehel, Austria - January 25, 2021 Switzerland's Beat Feuz in action REUTERS/Lisi Niesner

Alpine Skiing - Men's Super-G - Kitzbuehel, Austria - January 25, 2021 Austria's Hannes Reichelt in action REUTERS/Lisi Niesner

Alpine Skiing - Men's Super-G - Kitzbuehel, Austria - January 25, 2021 Italy's Dominik Paris reacts after his run REUTERS/Leonhard Foeger

Pilar Mazas, 90, resident at the elderly home Ballesol, receives the second dose of the Pfizer-BioNTech COVID-19 vaccine, as the coronavirus disease (COVID-19) outbreak continues, in Madrid, Spain January 25, 2021. REUTERS/Susana Vera

Alpine Skiing - Men's Super-G - Kitzbuehel, Austria - January 25, 2021 Italy's Emanuele Buzzi reacts after his run REUTERS/Leonhard Foeger

Alpine Skiing - Men's Super-G - Kitzbuehel, Austria - January 25, 2021 Italy's Emanuele Buzzi in action REUTERS/Lisi Niesner

Portugal's Foreign Minister Augusto Santos Silva (L) talks with Luxembourg's counterpart Jean Asselborn during a foreign ministers' meeting at the EU headquarters in Brussels, Belgium January 25, 2021. John Thys/Pool via REUTERS

German Foreign Minister Heiko Maas (L) talks with Croatian counterpart Gordan Grlic Radman during a foreign ministers' meeting at the EU headquarters in Brussels, Belgium January 25, 2021. John Thys/Pool via REUTERS

Alpine Skiing - Men's Super-G - Kitzbuehel, Austria - January 25, 2021 Travis Ganong of the U.S. reacts after his run REUTERS/Leonhard Foeger

Alpine Skiing - Men's Super-G - Kitzbuehel, Austria - January 25, 2021 France's Blaise Giezendanner reacts after his run REUTERS/Leonhard Foeger

Alpine Skiing - Men's Super-G - Kitzbuehel, Austria - January 25, 2021 Travis Ganong of the U.S. in action REUTERS/Lisi Niesner

European Union's foreign policy chief Josep Borrell (R) talks with Irish Foreign Minister Simon Coveney during a foreign ministers' meeting at the EU headquarters in Brussels, Belgium January 25, 2021. John Thys/Pool via REUTERS

European Union's foreign policy chief Josep Borrell rings the bell during a foreign ministers' meeting at the EU headquarters in Brussels, Belgium January 25, 2021. John Thys/Pool via REUTERS

European Union's foreign policy chief Josep Borrell (R) talks with Irish Foreign Minister Simon Coveney during a foreign ministers' meeting at the EU headquarters in Brussels, Belgium January 25, 2021. John Thys/Pool via REUTERS