Doctor Carlos Herrera leaves the house of an elderly woman after administering the second dose of the China's SINOVAC vaccine against the coronavirus disease (COVID-19) to her, as Chile starts applying the second dose of the COVID-19 vaccine to its elderly citizens, in Santiago, Chile March 3, 2021. Picture taken March 3, 2021. REUTERS/Ivan Alvarado

Nurse Aracelli Lara administers the second dose of the China's SINOVAC vaccine against the coronavirus disease (COVID-19) to an elderly woman inside her room, as Chile starts applying the second dose of the COVID-19 vaccine to its elderly citizens, in Santiago, Chile March 3, 2021. Picture taken March 3, 2021. REUTERS/Ivan Alvarado

An elderly woman is checked before receiving the second dose of the China's SINOVAC vaccine against the coronavirus disease (COVID-19) at her home, as Chile starts applying the second dose of the COVID-19 vaccine to its elderly citizens, in Santiago, Chile March 3, 2021. Pictutre taken March 3, 2021. REUTERS/Ivan Alvarado

An elderly woman is checked after receiving the second dose of the China's SINOVAC vaccine against the coronavirus disease (COVID-19) at her home, as Chile starts applying the second dose of the COVID-19 vaccine to its elderly citizens, in Santiago, Chile March 3, 2021. Picture taken March 3, 2021. REUTERS/Ivan Alvarado

An elderly woman receives the second dose of the China's SINOVAC vaccine against the coronavirus disease (COVID-19) at her home, as Chile starts applying the second dose of the COVID-19 vaccine to its elderly citizens, in Santiago, Chile March 4, 2021. REUTERS/Ivan Alvarado

Nurse Aracelli Lara puts on her gloves as she prepares to apply the second dose of the China's SINOVAC vaccine against the coronavirus disease (COVID-19) to an elderly woman at her home, as Chile starts applying the second dose of the COVID-19 vaccine to its elderly citizens, in Santiago, Chile March 3, 2021. Picture taken March 3, 2021. REUTERS/Ivan Alvarado

A healthcare worker prepares to administer the second dose of China's SINOVAC vaccine against the coronavirus disease (COVID-19) to an elderly woman at her room, as Chile starts applying the second dose of the COVID-19 vaccine to its elderly citizens, in Santiago, Chile March 3, 2021. Picture taken March 3, 2021. REUTERS/Ivan Alvarado

Nurse Aracelli Lara prepares the second dose of the China's SINOVAC vaccine against the coronavirus disease (COVID-19) inside the room of an elderly woman, as Chile starts applying the second dose of the COVID-19 vaccine to its elderly citizens, in Santiago, Chile March 3, 2021. Picture taken March 3, 2021. REUTERS/Ivan Alvarado

Nurse Aracelli Lara prepares the second dose of the China's SINOVAC vaccine against the coronavirus disease (COVID-19), as Chile starts applying the second dose of the COVID-19 vaccine to its elderly citizens, in Santiago, Chile March 3, 2021. Picture taken March 3, 2021. REUTERS/Ivan Alvarado

Nurse Aracelli Lara checks her stuff as she holds an ID reading 'I get vaccined' while applying the second dose of the China's SINOVAC vaccine against the coronavirus disease (COVID-19), as Chile starts applying the second dose of the COVID-19 vaccine to its elderly citizens, in Santiago, Chile March 3, 2021. Picture taken March 3, 2021. REUTERS/Ivan Alvarado

Doctor Carlos Herrera prepares to check an elderly woman inside her room after receiving the second dose of the China's SINOVAC vaccine against the coronavirus disease (COVID-19), at her home, as Chile starts applying the second dose of the COVID-19 vaccine to its elderly citizens, in Santiago, Chile March 3, 2021. Picture taken March 3, 2021. REUTERS/Ivan Alvarado

Doctor Carlos Herrera prepares to administer the second dose of the China's SINOVAC vaccine against the coronavirus disease (COVID-19) to an elderly woman, as Chile starts applying the second dose of the COVID-19 vaccine to its elderly citizens, in Santiago, Chile March 4, 2021. REUTERS/Ivan Alvarado

Soccer Football - Serie A - Fiorentina v AS Roma - Stadio Artemio Franchi, Florence, Italy - March 3, 2021 General view as a picture of Davide Astori is displayed as a tribute at the start of the match REUTERS/Alberto Lingria

Soccer Football - Serie A - Fiorentina v AS Roma - Stadio Artemio Franchi, Florence, Italy - March 3, 2021 A picture of Davide Astori is displayed as a tribute at the start of the match REUTERS/Alberto Lingria

Soccer Football - Serie A - Fiorentina v AS Roma - Stadio Artemio Franchi, Florence, Italy - March 3, 2021 A picture of Davide Astori is displayed as a tribute at the start of the match REUTERS/Alberto Lingria

Nordic Skiing - FIS Nordic World Ski Championships - Oberstdorf, Germany - March 3, 2021 Norway's Hans Christer Holund crosses the finish line to finish in first place in the Men's Interval Start 15k Free REUTERS/Kai Pfaffenbach

Nordic Skiing - FIS Nordic World Ski Championships - Oberstdorf, Germany - March 3, 2021 Norway's Hans Christer Holund crosses the finish line to finish in first place in the Men's Interval Start 15k Free REUTERS/Kai Pfaffenbach

Nordic Skiing - FIS Nordic World Ski Championships - Oberstdorf, Germany - March 3, 2021 Norway's Hans Christer Holund celebrates first place in the Men's Interval Start 15k Free REUTERS/Kai Pfaffenbach

Nordic Skiing - FIS Nordic World Ski Championships - Oberstdorf, Germany - March 3, 2021 Norway's Hans Christer Holund celebrates first place in the Men's Interval Start 15k Free REUTERS/Kai Pfaffenbach

Nordic Skiing - FIS Nordic World Ski Championships - Oberstdorf, Germany - March 3, 2021 Norway's Hans Christer Holund celebrates first place with second placed, Norway's Simen Hegstad Krueger and third placed, Norway's Harald Ostberg Amundsen in the Men's Interval Start 15k Free REUTERS/Kai Pfaffenbach

Nordic Skiing - FIS Nordic World Ski Championships - Oberstdorf, Germany - March 3, 2021 Norway's Simen Hegstad Krueger crosses the finish line during the Men's Interval Start 15k Free REUTERS/Kai Pfaffenbach

Nordic Skiing - FIS Nordic World Ski Championships - Oberstdorf, Germany - March 3, 2021 Great Britain's Andrew Musgrave crosses the finish line during the Men's Interval Start 15k Free REUTERS/Kai Pfaffenbach

The UEFA Euro 2020 logo is seen on a camera display marking 100 days before the start of the Euro 2020 soccer tournament in St. Petersburg, Russia, March 3, 2021. REUTERS/Anton Vaganov

UEFA Euro 2020 mascot Skillzy poses with the official tournament ball marking 100 days before the start of the Euro 2020 soccer tournament in St. Petersburg, Russia, March 3, 2021. REUTERS/Anton Vaganov

Nordic Skiing - FIS Nordic World Ski Championships - Oberstdorf, Germany - March 3, 2021 France's Maurice Manificat reacts after the finish of the Men's Interval Start 15k Free REUTERS/Kai Pfaffenbach

Alexei Sorokin, CEO of the local organising committee for the UEFA Euro 2020 in St. Petersburg attends a news conference marking 100 days before the start of the Euro 2020 soccer tournament in St. Petersburg, Russia, March 3, 2021. REUTERS/Anton Vaganov

Nordic Skiing - FIS Nordic World Ski Championships - Oberstdorf, Germany - March 3, 2021 Norway's Harald Ostberg Amundsen in action during the Men's Interval Start 15k Free REUTERS/Kai Pfaffenbach

The UEFA Euro 2020 trophy is displayed marking 100 days before the start of the Euro 2020 soccer tournament in St. Petersburg, Russia, March 3, 2021. REUTERS/Anton Vaganov

The UEFA Euro 2020 trophy is displayed marking 100 days before the start of the Euro 2020 soccer tournament in St. Petersburg, Russia, March 3, 2021. REUTERS/Anton Vaganov

The UEFA Euro 2020 trophy is displayed marking 100 days before the start of the Euro 2020 soccer tournament in St. Petersburg, Russia, March 3, 2021. REUTERS/Anton Vaganov

Nordic Skiing - FIS Nordic World Ski Championships - Oberstdorf, Germany - March 3, 2021 Russia's Alexander Bolshunov reacts after the finish of the Men's Interval Start 15k Free REUTERS/Kai Pfaffenbach

The UEFA Euro 2020 trophy is displayed marking 100 days before the start of the Euro 2020 soccer tournament in St. Petersburg, Russia, March 3, 2021. REUTERS/Anton Vaganov

Nordic Skiing - FIS Nordic World Ski Championships - Oberstdorf, Germany - March 3, 2021 Norway's Martin Johnsrud Sundby reacts after the finish of the Men's Interval Start 15k Free REUTERS/Kai Pfaffenbach

Nordic Skiing - FIS Nordic World Ski Championships - Oberstdorf, Germany - March 3, 2021 Norway's Martin Johnsrud Sundby in action approaching the finish line during the Men's Interval Start 15k Free REUTERS/Kai Pfaffenbach

Nordic Skiing - FIS Nordic World Ski Championships - Oberstdorf, Germany - March 3, 2021 Finland's Perttu Hyvarinen reacts after the finish of the Men's Interval Start 15k Free REUTERS/Kai Pfaffenbach

Nordic Skiing - FIS Nordic World Ski Championships - Oberstdorf, Germany - March 3, 2021 Norway's Hans Christer Holund in action during the Men's Interval Start 15k Free REUTERS/Kai Pfaffenbach

Nordic Skiing - FIS Nordic World Ski Championships - Oberstdorf, Germany - March 3, 2021 Norway's Harald Ostberg Amundsen reacts after the finish of the Men's Interval Start 15k Free REUTERS/Kai Pfaffenbach

Nordic Skiing - FIS Nordic World Ski Championships - Oberstdorf, Germany - March 3, 2021 Sweden's William Poromaa reacts after the finish of the Men's Interval Start 15k Free REUTERS/Kai Pfaffenbach

Nordic Skiing - FIS Nordic World Ski Championships - Oberstdorf, Germany - March 3, 2021 Republic of Ireland's Thomas Maloney Westgard reacts after the finish of the Men's Interval Start 15k Free REUTERS/Kai Pfaffenbach

Nordic Skiing - FIS Nordic World Ski Championships - Oberstdorf, Germany - March 3, 2021 Sweden's Jens Burman in action during the Men's Interval Start 15k Free REUTERS/Kai Pfaffenbach

Nordic Skiing - FIS Nordic World Ski Championships - Oberstdorf, Germany - March 3, 2021 Russia's Alexander Bolshunov in action during the Men's Interval Start 15k Free REUTERS/Kai Pfaffenbach

Nordic Skiing - FIS Nordic World Ski Championships - Oberstdorf, Germany - March 3, 2021 Gus Schumacher of the U.S. in action during the Men's Interval Start 15k Free REUTERS/Kai Pfaffenbach

Nordic Skiing - FIS Nordic World Ski Championships - Oberstdorf, Germany - March 3, 2021 Norway's Martin Johnsrud Sundby in action during the Men's Interval Start 15k Free REUTERS/Kai Pfaffenbach

Nordic Skiing - FIS Nordic World Ski Championships - Oberstdorf, Germany - March 3, 2021 Russia's Alexander Bolshunov in action during the Men's Interval Start 15k Free REUTERS/Kai Pfaffenbach

Nordic Skiing - FIS Nordic World Ski Championships - Oberstdorf, Germany - March 3, 2021 Russia's Alexander Bolshunov in action during the Men's Interval Start 15k Free REUTERS/Kai Pfaffenbach

Nordic Skiing - FIS Nordic World Ski Championships - Oberstdorf, Germany - March 3, 2021 Russia's Andrey Melnichenko in action during the Men's Interval Start 15k Free REUTERS/Kai Pfaffenbach

Nordic Skiing - FIS Nordic World Ski Championships - Oberstdorf, Germany - March 3, 2021 Russia's Ivan Yakimushkin in action during the Men's Interval Start 15k Free REUTERS/Kai Pfaffenbach

Nordic Skiing - FIS Nordic World Ski Championships - Oberstdorf, Germany - March 3, 2021 Norway's Sjur Rothe and Austria's Mika Vermeulen in action during the Men's Interval Start 15k Free REUTERS/Kai Pfaffenbach

Nordic Skiing - FIS Nordic World Ski Championships - Oberstdorf, Germany - March 3, 2021 Norway's Sjur Rothe in action during the Men's Interval Start 15k Free REUTERS/Kai Pfaffenbach

Nordic Skiing - FIS Nordic World Ski Championships - Oberstdorf, Germany - March 3, 2021 Russia's Artem Maltsev in action during the Men's Interval Start 15k Free REUTERS/Kai Pfaffenbach

Nordic Skiing - FIS Nordic World Ski Championships - Oberstdorf, Germany - March 3, 2021 Russia's Artem Maltsev in action during the Men's Interval Start 15k Free REUTERS/Kai Pfaffenbach

Nordic Skiing - FIS Nordic World Ski Championships - Oberstdorf, Germany - March 3, 2021 Poland's Dominik Bury and France's Maurice Manificat in action during the Men's Interval Start 15k Free REUTERS/Kai Pfaffenbach

Nordic Skiing - FIS Nordic World Ski Championships - Oberstdorf, Germany - March 3, 2021 Switzerland's Dario Cologna in action during the Men's Interval Start 15k Free REUTERS/Kai Pfaffenbach

Nordic Skiing - FIS Nordic World Ski Championships - Oberstdorf, Germany - March 3, 2021 Great Britain's Andrew Musgrave in action during the Men's Interval Start 15k Free REUTERS/Kai Pfaffenbach

Nordic Skiing - FIS Nordic World Ski Championships - Oberstdorf, Germany - March 3, 2021 Great Britain's Andrew Young in action during the Men's Interval Start 15k Free REUTERS/Kai Pfaffenbach

Nordic Skiing - FIS Nordic World Ski Championships - Oberstdorf, Germany - March 3, 2021 Sweden's Bjorn Sandstrom in action during the Men's Interval Start 15k Free REUTERS/Kai Pfaffenbach

UEFA Euro 2020 mascot Skillzy poses with the trophy marking 100 days before the start of the Euro 2020 soccer tournament in St. Petersburg, Russia, March 3, 2021. REUTERS/Anton Vaganov

UEFA Euro 2020 mascot Skillzy poses with the trophy marking 100 days before the start of the Euro 2020 soccer tournament in St. Petersburg, Russia, March 3, 2021. REUTERS/Anton Vaganov

UEFA Euro 2020 mascot Skillzy poses with the trophy marking 100 days before the start of the Euro 2020 soccer tournament in St. Petersburg, Russia, March 3, 2021. REUTERS/Anton Vaganov

The UEFA Euro 2020 trophy is displayed marking 100 days before the start of the Euro 2020 soccer tournament in St. Petersburg, Russia, March 3, 2021. REUTERS/Anton Vaganov