MONS, BELGIUM - DECEMBER 28: A nurse administers a COVID-19 vaccine to Josepha Delmotte, 102 years old, at La Bonne Maison de Bouzanton residential care center on December 28, 2020 in Mons, Belgium. ( Johanna Geron/Reuters/Pool - Anadolu Agency )

MONS, BELGIUM - DECEMBER 28: A nurse administers a COVID-19 vaccine to Josepha Delmotte, 102 years old, at La Bonne Maison de Bouzanton residential care center on December 28, 2020 in Mons, Belgium. ( Johanna Geron/Reuters/Pool - Anadolu Agency )

WOLUWE-SAINT-PIERRE, BELGIUM - DECEMBER 28: A nurse prepares a COVID-19 vaccine for Lucie Danjou, 101 years old, at the Notre Dame de Stockel residential care center on December 28, 2020 in Woluwe-Saint-Pierre, Belgium. ( Johanna Geron/Reuters/Pool - Anadolu Agency )

BRUSSELS, BELGIUM - DECEMBER 28: Belgian patient Lucie Danjou, 101, receives a dose of the Pfizer/BioNtech COVID-19 vaccine at the Notre Dame de Stockel residential care center on December 28, 2020 in Woluwe-Saint-Pierre, Brussels, Belgium. ( Johanna Geron/Reuters/Pool - Anadolu Agency )

MONS, BELGIUM - DECEMBER 28: A nurse shows a dose of the Pfizer-BioNTech Covid-19 vaccine during a vaccination operation at "La Bonne Maison de Bouzanton" care home on December 28, 2020 in Mons, Belgium, as Belgium starts its national vaccination campaign to fight against the spread of the novel coronavirus. - The vaccine doses were transported earlier from the University Hospital in Leuven to the residential care home, as the vaccination program starts with the most vulnerable. Belgium is the country with the highest number of deaths compared to its population with 165 fatalities per 100,000 inhabitants. ( Johanna Geron/Reuters/Pool - Anadolu Agency )

BRUSSELS, BELGIUM - DECEMBER 28: A member of the medical staff prepares a dose of the Pfizer/BioNtech COVID-19 vaccine at the Notre-Dame hospital in Brussels, for Belgian patient Lucie Danjou, 101, on December 28, 2020 as the country starts its national vaccination campaign to fight against the spread of the novel coronavirus. ( Johanna Geron/Reuters/Pool - Anadolu Agency )

PUURS, BELGIUM - DECEMBER 28: Jos Hermans (Front), 96 years old, gestures to press members after receiving the first Pfizer/BioNTech COVID-19 vaccine at the Saint-Peter residential care center on December 28, 2020 in Puurs-Sint-Amands, Belgium. ( Johanna Geron/Reuters/Pool - Anadolu Agency )

PUURS, BELGIUM - DECEMBER 28: Jos Hermans, 96 years old, receives the first Pfizer/BioNTech COVID-19 vaccine at the Saint-Peter residential care center on December 28, 2020 in Puurs-Sint-Amands, Belgium. ( Johanna Geron/Reuters/Pool - Anadolu Agency )

LEUVEN, BELGIUM - DECEMBER 28: A medical staff prepares boxes of Pfizer-BioNTech Covid-19 vaccines before their distribution on December 28, 2020 at the University Hospital in Leuven, as Belgium starts its national vaccination campaign to fight against the spread of the novel coronavirus. - Belgium is the country with the highest number of deaths compared to its population with 165 fatalities per 100,000 inhabitants. ( Johanna Geron/Reuters/Pool - Anadolu Agency )

PUURS, BELGIUM - DECEMBER 28: A nurse prepares a dose of the Pfizer-BioNTech Covid-19 vaccine, during a vaccination operation at the "Woonzorgcentrum Sint-Pieters" rest home on December 28, 2020 in Puurs, in Belgium's Flemish region, as the country starts its national vaccination campaign to fight against the spread of the novel coronavirus. - The vaccine doses were transported earlier from the University Hospital in Leuven to the residential care home, as the vaccination program starts with the most vulnerable. Belgium is the country with the highest number of deaths compared to its population with 165 fatalities per 100,000 inhabitants. ( Johanna Geron/Reuters/Pool - Anadolu Agency )

MONS, BELGIUM - DECEMBER 28: Benjamin Torrekens, director of the rest home, receives a dose of the Pfizer-BioNTech Covid-19 vaccine at "La Bonne Maison de Bouzanton" care home during a vaccination operation on December 28, 2020 in Mons, Belgium, as Belgium starts its national vaccination campaign to fight against the spread of the novel coronavirus. - The vaccine doses were transported earlier from the University Hospital in Leuven to the residential care home, as the vaccination program starts with the most vulnerable. Belgium is the country with the highest number of deaths compared to its population with 165 fatalities per 100,000 inhabitants. ( Johanna Geron/Reuters/Pool - Anadolu Agency )

MONS, BELGIUM - DECEMBER 28. Nurse Joan Darck receives a dose of the Pfizer-BioNTech Covid-19 vaccine at "La Bonne Maison de Bouzanton" care home during a vaccination operation on December 28, 2020 in Mons, Belgium, as Belgium starts its national vaccination campaign to fight against the spread of the novel coronavirus. - The vaccine doses were transported earlier from the University Hospital in Leuven to the residential care home, as the vaccination program starts with the most vulnerable. Belgium is the country with the highest number of deaths compared to its population with 165 fatalities per 100,000 inhabitants. ( Johanna Geron/Reuters/Pool - Anadolu Agency )