Director of the Oxford Vaccine Group (OVG) and a professor of Paediatric Infection and Immunity Sir Andrew Pollard poses for a picture after he was made a Knight Bachelor, following an investiture ceremony at Windsor Castle, in Windsor, Britain June 8, 2022. Andrew Matthews/Pool via REUTERS 

Director of the Oxford Vaccine Group (OVG) and a professor of Paediatric Infection and Immunity Sir Andrew Pollard poses for a picture after he was made a Knight Bachelor, following an investiture ceremony at Windsor Castle, in Windsor, Britain June 8, 2022. Andrew Matthews/Pool via REUTERS 

U.S. Rep. Cori Bush (D-MO) rallies with U.S. Rep. Ayanna Pressley (D-MA), family members of Andrew Joseph III, Eva Marcille and members of Black Lives Matter outside of the U.S. Department of Justice to call for an end to qualified immunity in Washington, U.S., March 3, 2022. REUTERS/Leah Millis 

People rally with family members of Andrew Joseph III, Eva Marcille and members of Black Lives Matter outside of the U.S. Department of Justice to call for an end to qualified immunity in Washington, U.S., March 3, 2022. REUTERS/Leah Millis 

Beatrice "Auntie Bee" Johnson of Families United 4 Justice Network/Love Not Blood Campaign embraces U.S. Rep. Cori Bush (D-MO) after they rallied with family members of Andrew Joseph III, Eva Marcille and members of Black Lives Matter outside of the U.S. Department of Justice to call for an end to qualified immunity in Washington, U.S., March 3, 2022. REUTERS/Leah Millis 

U.S. Rep. Cori Bush (D-MO) rallies with family members of Andrew Joseph III, Eva Marcille and members of Black Lives Matter outside of the U.S. Department of Justice to call for an end to qualified immunity in Washington, U.S., March 3, 2022. REUTERS/Leah Millis 

People rally with family members of Andrew Joseph III, Eva Marcille and members of Black Lives Matter outside of the U.S. Department of Justice to call for an end to qualified immunity in Washington, U.S., March 3, 2022. REUTERS/Leah Millis 

U.S. Rep. Ayanna Pressley (D-MA) rallies with family members of Andrew Joseph III, Eva Marcille and members of Black Lives Matter outside of the U.S. Department of Justice to call for an end to qualified immunity in Washington, U.S., March 3, 2022. REUTERS/Leah Millis 

Eva Marcille poses for photos after rallying with family members of Andrew Joseph III, members of Black Lives Matter and lawmakers outside of the U.S. Department of Justice to call for an end to qualified immunity in Washington, U.S., March 3, 2022. REUTERS/Leah Millis 

U.S. Rep. Ayanna Pressley (D-MA) rallies with family members of Andrew Joseph III, Eva Marcille and members of Black Lives Matter outside of the U.S. Department of Justice to call for an end to qualified immunity in Washington, U.S., March 3, 2022. REUTERS/Leah Millis 

U.S. Rep. Cori Bush (D-MO) rallies with family members of Andrew Joseph III, Eva Marcille and members of Black Lives Matter outside of the U.S. Department of Justice to call for an end to qualified immunity in Washington, U.S., March 3, 2022. REUTERS/Leah Millis REFILE - CORRECTING TITLE 

U.S. Rep. Ayanna Pressley (D-MA) rallies with family members of Andrew Joseph III, Eva Marcille, and Black Lives Matter outside of the U.S. Department of Justice to call for an end to qualified immunity in Washington, U.S., March 3, 2022. REUTERS/Leah Millis 

An activist holds a doll during a rally against the coronavirus disease (COVID-19) vaccination and QR codes proving immunity status, in Yekaterinburg, Russia December 12, 2021. A sign on a poster reads "There is nowhere to retreat, the children are behind us" REUTERS/Eduard Korniyenko 

Activists attend a rally against the coronavirus disease (COVID-19) vaccination and QR codes proving immunity status, in Yekaterinburg, Russia December 12, 2021. A sign on a poster reads "No QR codes" REUTERS/Eduard Korniyenko 

Activists attend a rally against the coronavirus disease (COVID-19) vaccination and QR codes proving immunity status, in Yekaterinburg, Russia December 12, 2021. A sign on a poster reads "No QR codes" REUTERS/Eduard Korniyenko 

Activists attend a rally against the coronavirus disease (COVID-19) vaccination and QR codes proving immunity status, in Yekaterinburg, Russia December 12, 2021. REUTERS/Eduard Korniyenko 

Activists attend a rally against the coronavirus disease (COVID-19) vaccination and QR codes proving immunity status, in Yekaterinburg, Russia December 12, 2021. A sign on a poster reads "Forced to vaccinate? Together we will fight back the lawlessness" REUTERS/Eduard Korniyenko 

A passenger holds a smartphone displaying a QR code as proof of immunity to COVID-19 in public transport in Kazan, Russia November 22, 2021. REUTERS/Artem Dergunov 

A passenger holds a smartphone displaying a QR code as proof of immunity to COVID-19 in public transport in Kazan, Russia November 22, 2021. REUTERS/Artem Dergunov 

A conductor checks a QR code of a passenger as proof of immunity to COVID-19 in public transport in Kazan, Russia November 22, 2021. REUTERS/Artem Dergunov 

A conductor checks a QR code of a passenger as proof of immunity to COVID-19 in public transport in Kazan, Russia November 22, 2021. REUTERS/Artem Dergunov 

An employee shows her "Green Pass", a document showing proof of coronavirus disease (COVID-19) immunity, in an office in Rome, Italy, September 16, 2021. REUTERS/Yara Nardi 

An employee shows her "Green Pass", a document showing proof of coronavirus disease (COVID-19) immunity, in an office in Rome, Italy, September 16, 2021. REUTERS/Yara Nardi 

A tourist shows his "Green Pass", a document showing proof of coronavirus disease (COVID-19) immunity, as he enters the Colosseum, in Rome, Italy, September 16, 2021. REUTERS/Yara Nardi 

A sign indicates where tourists must show their "Green Passes", a document showing proof of coronavirus disease (COVID-19) immunity, upon entering the Colosseum, in Rome, Italy, September 16, 2021. REUTERS/Yara Nardi 

A security guard checks tourists' "Green Passes", a document showing proof of coronavirus disease (COVID-19) immunity, as they enter the Colosseum, in Rome, Italy, September 16, 2021. REUTERS/Yara Nardi 

A tourist shows his "Green Pass", a document showing proof of coronavirus disease (COVID-19) immunity, as he enters the Colosseum, in Rome, Italy, September 16, 2021. REUTERS/Yara Nardi 

Tourists line up to show their "Green Passes", a document showing proof of coronavirus disease (COVID-19) immunity, as they enter the Colosseum, in Rome, Italy, September 16, 2021. REUTERS/Yara Nardi 

A specimen collection kit mailed in September 2021 to patients with blood cancers enrolled in the IMPACT study (Immune Profiling with Antibody-based COVID-19 Testing), being conducted by the Dana Farber Cancer Institute and Quest Diagnostics to shed light on how these patients' immune systems may interact with the SARS-CoV-2 virus or the vaccines, is seen in Chatham, New Jersey, U.S. September 10, 2021. REUTERS/Nancy Lapid 

A specimen collection kit mailed in September 2021 to patients with blood cancers enrolled in the IMPACT study (Immune Profiling with Antibody-based COVID-19 Testing), being conducted by the Dana Farber Cancer Institute and Quest Diagnostics to shed light on how these patients' immune systems may interact with the SARS-CoV-2 virus or the vaccines, is seen in Chatham, New Jersey, U.S. September 10, 2021. REUTERS/Nancy Lapid 

A specimen collection kit mailed in September 2021 to patients with blood cancers enrolled in the IMPACT study (Immune Profiling with Antibody-based COVID-19 Testing), being conducted by the Dana Farber Cancer Institute and Quest Diagnostics to shed light on how these patients' immune systems may interact with the SARS-CoV-2 virus or the vaccines, is seen in Chatham, New Jersey, U.S. September 10, 2021. REUTERS/Nancy Lapid 

A student receives a dose of the Chinese Sinovac vaccine against coronavirus disease (COVID-19) at a mass immunization venue inside Cairo University, in Cairo, Egypt, September 8, 2021. REUTERS/Mohamed Abd El Ghany 

A man receives a dose of the vaccine against coronavirus disease (COVID-19) at a mass immunization venue inside Cairo University, in Cairo, Egypt, September 8, 2021. REUTERS/Mohamed Abd El Ghany 

A nurse prepares a dose of the Chinese Sinovac vaccine against coronavirus disease (COVID-19) at a mass immunization venue inside Cairo University, in Cairo, Egypt, September 8, 2021. REUTERS/Mohamed Abd El Ghany 

A woman receives a dose of the vaccine against coronavirus disease (COVID-19) at a mass immunization venue inside Cairo University, in Cairo, Egypt, September 8, 2021. REUTERS/Mohamed Abd El Ghany 

A nurse prepares a dose of the vaccine against coronavirus disease (COVID-19) at a mass immunization venue inside Cairo University, in Cairo, Egypt, September 8, 2021. REUTERS/Mohamed Abd El Ghany 

A man receives a dose of the vaccine against coronavirus disease (COVID-19) at a mass immunization venue inside Cairo University, in Cairo, Egypt, September 8, 2021. REUTERS/Mohamed Abd El Ghany 

People wait before receiving the vaccine against coronavirus disease (COVID-19) at a mass immunization venue inside Cairo University, in Cairo, Egypt, September 8, 2021. REUTERS/Mohamed Abd El Ghany 

A student receives a dose of the vaccine against coronavirus disease (COVID-19) at a mass immunization venue inside Cairo University, in Cairo, Egypt, September 8, 2021. REUTERS/Mohamed Abd El Ghany 

A nurse shows a vial of the Chinese Sinovac vaccine against coronavirus disease (COVID-19) at a mass immunization venue inside Cairo University, in Cairo, Egypt, September 8, 2021. REUTERS/Mohamed Abd El Ghany 

A student receives a dose of the Chinese Sinovac vaccine against coronavirus disease (COVID-19) at a mass immunization venue inside Cairo University, in Cairo, Egypt, September 8, 2021. REUTERS/Mohamed Abd El Ghany 

Mimi Oset, 45, who has a visual disability and an immune-system illness, uses a nebuliser as she sits on her bed inside their house in the Sants neighborhood, amid the coronavirus disease (COVID-19) pandemic, in Barcelona, Spain, August 9, 2021. Picture taken August 9, 2021. REUTERS/Nacho Doce 

Mimi Oset, 45, who has a visual disability and an immune-system illness, uses a nebuliser as she sits on her bed inside their house in the Sants neighborhood, amid the coronavirus disease (COVID-19) pandemic, in Barcelona, Spain, August 9, 2021. Picture taken August 9, 2021. REUTERS/Nacho Doce 

Marina, 23 and her sister Ingrid, 9, daughters of Mimi Oset, 45, who has a visual disability and an immune-system illness, look at a laptop inside their house in the Sants neighborhood, amid the coronavirus disease (COVID-19) pandemic, in Barcelona, Spain, August 9, 2021. Picture taken August 9, 2021. REUTERS/Nacho Doce 

Mimi Oset, 45, who has a visual disability and an immune-system illness, and her daughters Marina, 23, and Ingrid, 9, have breakfast inside their house in the Sants neighborhood, amid the coronavirus disease (COVID-19) pandemic, in Barcelona, Spain, August 9, 2021. Picture taken August 9, 2021. REUTERS/Nacho Doce 

Marina, 23, and her sister Ingrid, 9, daughters of Mimi Oset, 45, who has a visual disability and an immune-system illness, draw a mandala while accompanied by Sonia, who is a family worker, inside their house in the Sants neighborhood, amid the coronavirus disease (COVID-19) pandemic, in Barcelona, Spain, August 9, 2021. Picture taken August 9, 2021. REUTERS/Nacho Doce 

A man shows his coronavirus disease (COVID-19) health pass at a restaurant as France brings on tougher restrictions where a proof of immunity will now be required to access most public spaces and to travel by inter-city train, in Nice, France, August 9, 2021. REUTERS/Eric Gaillard 

A coronavirus disease (COVID-19) health pass poster is seen in a restaurant as France brings on tougher restrictions where a proof of immunity will now be required to access most public spaces and to travel by inter-city train, in Nice, France, August 9, 2021. REUTERS/Eric Gaillard 

Posters in a restaurant show the latest restrictions brought on by France, where a proof of immunity will now be required to access most of the public spaces and to travel by inter-city train, in Nice, France, August 9, 2021. REUTERS/Eric Gaillard 

A man shows his COVID-19 health pass at a restaurant as France brings on tougher restrictions where a proof of immunity will now be required to access most public spaces and to travel by inter-city train, in Nice, France, August 9, 2021. REUTERS/Eric Gaillard 

Coronavirus disease (COVID-19) health pass posters are seen outside a bar as France brings in tougher restrictions where a proof of immunity will be required to access most public spaces and to travel by inter-city train, in Nice, France, August 9, 2021. REUTERS/Eric Gaillard 

A coronavirus disease (COVID-19) health pass poster reading "Enter, Scan, Enjoy" is seen at a restaurant as France brings in tougher restrictions where a proof of immunity will be required to access most public spaces and to travel by inter-city train in Nice, France, August 9, 2021. REUTERS/Eric Gaillard 

Coronavirus disease (COVID-19) health pass posters are seen in a restaurant as France brings in tougher restrictions where a proof of immunity will be required to access public spaces and to travel by inter-city train in Nice, France, August 9, 2021. REUTERS/Eric Gaillard 

A coronavirus disease (COVID-19) health pass poster and a poster reading "Mandatory Mask" are seen outside a bar as France brings in tougher restrictions where a proof of immunity will be required to access most public spaces and to travel by inter-city train, in Nice, France, August 9, 2021. REUTERS/Eric Gaillard 

A woman shows a COVID-19 health pass in a cafe as France brings in tougher restrictions where a proof of immunity will be required to access most of the public spaces or to travel on an inter-city train in Paris, France, August 9, 2021. REUTERS/Benoit Tessier 

A man shows his COVID-19 health pass in a cafe as France brings in tougher restrictions where a proof of immunity will be required to access most of the public spaces or to travel on an inter-city train in Paris, France, August 9, 2021. REUTERS/Benoit Tessier 

A customer's Green Pass (health pass) is checked before entry to a pizzeria as Italy brings in tougher restrictions where a proof of immunity will be required to access an array of services and leisure activities, in Rome, Italy, August 6, 2021. REUTERS/Remo Casilli 

A woman has her Green Pass (health pass) checked before entering a pizzeria as Italy brings in tougher restrictions where a proof of immunity will be required to access an array of services and leisure activities, in Rome, Italy, August 6, 2021. REUTERS/Remo Casilli 

A man has his Green Pass (health pass) checked before entering a pizzeria as Italy brings in tougher restrictions where a proof of immunity will be required to access an array of services and leisure activities, in Rome, Italy, August 6, 2021. REUTERS/Remo Casilli