Berlin's Health Senator Dilek Kalayci (L) looks on as police officer Dirk Moeller is vaccinated against Covid-19 at a new vaccination centre inside the former Tempelhof airport in Berlin, Germany March 8, 2021. Tobias Schwarz/Pool via REUTERS

A health worker looks out of a cabin at a new Covid-19 vaccination centre inside the former Tempelhof airport in Berlin, Germany March 8, 2021. Tobias Schwarz/Pool via REUTERS

Health workers prepare syringes with the AstraZeneca vaccine against Covid-19 at a new vaccination centre inside the former Tempelhof airport in Berlin, Germany March 8, 2021. Tobias Schwarz/Pool via REUTERS

A passenger gets a test, developed by Sheba Medical Center, which takes 15 minutes to deliver results and considered reliable for detecting active coronavirus disease (COVID-19) infection, an El Al spokesman said, before a pilot flight from Israel to New York, at Ben Gurion international airport near Tel Aviv, in Lod, Israel March 8, 2021. REUTERS/Amir Cohen

A health worker runs a test, developed by Sheba Medical Center, which takes 15 minutes to deliver results and considered reliable for detecting active coronavirus disease (COVID-19) infection, an El Al spokesman said, before a pilot flight from Israel to New York, at Ben Gurion international airport near Tel Aviv, in Lod, Israel March 8, 2021. REUTERS/Amir Cohen

A passenger gets a test, developed by Sheba Medical Center, which takes 15 minutes to deliver results and considered reliable for detecting active coronavirus disease (COVID-19) infection, an El Al spokesman said, before a pilot flight from Israel to New York, at Ben Gurion international airport near Tel Aviv, in Lod, Israel March 8, 2021. REUTERS/Amir Cohen

A health worker runs a test, developed by Sheba Medical Center, which takes 15 minutes to deliver results and considered reliable for detecting active coronavirus disease (COVID-19) infection, an El Al spokesman said, before a pilot flight from Israel to New York, at Ben Gurion international airport near Tel Aviv, in Lod, Israel March 8, 2021. REUTERS/Amir Cohen

A passenger gets a test, developed by Sheba Medical Center, which takes 15 minutes to deliver results and considered reliable for detecting active coronavirus disease (COVID-19) infection, an El Al spokesman said, before a pilot flight from Israel to New York, at Ben Gurion international airport near Tel Aviv, in Lod, Israel March 8, 2021. REUTERS/Amir Cohen

A passenger checks his phone as he stands with his dog after arriving on a flight to Israel at Ben Gurion international airport amid coronavirus disease (COVID-19) restrictions near Tel Aviv, in Lod, Israel March 8, 2021. REUTERS/Amir Cohen

A passenger gets tested for coronavirus disease (COVID-19) after arriving on a flight to Israel at Ben Gurion international airport near Tel Aviv, in Lod, Israel March 8, 2021. REUTERS/Amir Cohen

A passenger gets tested for coronavirus disease (COVID-19) after arriving on a flight to Israel at Ben Gurion international airport near Tel Aviv, in Lod, Israel March 8, 2021. REUTERS/Amir Cohen

Avigal Soreq, CEO at El Al Israel Airlines, gives a presser at Ben Gurion international airport amid coronavirus disease (COVID-19) restrictions, in Lod, Israel March 8, 2021. REUTERS/Amir Cohen

Passengers get tested for coronavirus disease (COVID-19) after they arrived on a flight to Israel at Ben Gurion international airport near Tel Aviv, in Lod, Israel March 8, 2021. REUTERS/Amir Cohen

General view inside a new COVID-19 vaccination centre at the former Tempelhof airport in Berlin, Germany March 8, 2021. Tobias Schwarz/Pool via REUTERS

A woman walks through a new COVID-19 vaccination centre at the former Tempelhof airport in Berlin, Germany March 8, 2021. Tobias Schwarz/Pool via REUTERS

A security officer stands in front of the entrance to a new COVID-19 vaccination centre at the former Tempelhof airport in Berlin, Germany March 8, 2021. Tobias Schwarz/Pool via REUTERS

German police officer Dirk Moeller registers to get a vaccine against COVID-19 inside a new vaccination centre at the former Tempelhof airport in Berlin, Germany March 8, 2021. Tobias Schwarz/Pool via REUTERS

Israeli Transportation Minister Miri Regev speaks during a presentation as Ben Gurion international airport introduced a rapid coronavirus disease (COVID-19) testing system in an effort to restore commercial aviation and facilitate "clean flights" for passengers who either show proof of immunity or test negative near Tel Aviv, in Lod, Israel March 8, 2021. REUTERS/Amir Cohen

Israeli Transportation Minister Miri Regev attends a presentation as Ben Gurion international airport introduced a rapid coronavirus disease (COVID-19) testing system in an effort to restore commercial aviation and facilitate "clean flights" for passengers who either show proof of immunity or test negative near Tel Aviv, in Lod, Israel March 8, 2021. REUTERS/Amir Cohen

A man walks by a sign directing people to the testing area for the coronavirus disease (COVID-19) infection at Ben Gurion international airport near Tel Aviv, in Lod, Israel March 8, 2021. REUTERS/Amir Cohen

A health worker takes the antigen test, developed by Sheba Medical Center, which takes 15 minutes to deliver results and is considered reliable for detecting active coronavirus disease (COVID-19) infection, an El Al spokesman said, at Ben Gurion international airport near Tel Aviv, in Lod, Israel March 8, 2021. REUTERS/Amir Cohen

A person presents a device for the antigen tests, developed by Sheba Medical Center, which takes 15 minutes to deliver results and is considered reliable for detecting active coronavirus disease (COVID-19) infection, an El Al spokesman said, at Ben Gurion international airport near Tel Aviv, in Lod, Israel March 8, 2021. REUTERS/Amir Cohen

A health worker takes the antigen test, developed by Sheba Medical Center, which takes 15 minutes to deliver results and is considered reliable for detecting active coronavirus disease (COVID-19) infection, an El Al spokesman said, at Ben Gurion international airport near Tel Aviv, in Lod, Israel March 8, 2021. REUTERS/Amir Cohen

A health worker presents a device for the antigen tests, developed by Sheba Medical Center, which takes 15 minutes to deliver results and is considered reliable for detecting active coronavirus disease (COVID-19) infection, an El Al spokesman said, at Ben Gurion international airport near Tel Aviv, in Lod, Israel March 8, 2021. REUTERS/ Amir Cohen

Health workers chat during a presentation for the antigen tests, developed by Sheba Medical Center, which takes 15 minutes to deliver results and is considered reliable for detecting active coronavirus disease (COVID-19) infection, an El Al spokesman said, at Ben Gurion international airport near Tel Aviv, in Lod, Israel March 8, 2021 /REUTERS/ Amir Cohen

Refilwe Ledwaba, a pilot training young African women to become aircraft and drone pilots, poses for a photograph at the Grand Central airport in Midrand, South Africa February 28, 2021. Picture taken February 28, 2021. REUTERS/Siphiwe Sibeko

Refilwe Ledwaba, a pilot training young African women to become aircraft and drone pilots, reacts during an interview at the Grand Central airport in Midrand, South Africa February 28, 2021. Picture taken February 28, 2021. REUTERS/Siphiwe Sibeko

Refilwe Ledwaba, a pilot training young African women to become aircraft and drone pilots, gestures during an interview at the Grand Central airport in Midrand, South Africa February 28, 2021. Picture taken February 28, 2021. REUTERS/Siphiwe Sibeko

Refilwe Ledwaba, a pilot training young African women to become aircraft and drone pilots, looks on after an interview at the Grand Central airport in Midrand, South Africa February 28, 2021. Picture taken February 28, 2021. REUTERS/Siphiwe Sibeko

An Ethiopian Airlines staff unloads the AstraZeneca/Oxford vaccines under the COVAX scheme against the coronavirus disease (COVID-19) from a cargo plane at the Bole International Airport in Addis Ababa, Ethiopia March 7, 2021. REUTERS/Tiksa Negeri

Ethiopia's Minister of Health Lia Tadesse speaks to the media after receiving the AstraZeneca/Oxford vaccines under the COVAX scheme against the coronavirus disease (COVID-19) at the Bole International Airport in Addis Ababa, Ethiopia March 7, 2021. REUTERS/Tiksa Negeri

An Ethiopian Airlines staff unloads the AstraZeneca/Oxford vaccines under the COVAX scheme against the coronavirus disease (COVID-19) from a cargo plane at the Bole International Airport in Addis Ababa, Ethiopia March 7, 2021. REUTERS/Tiksa Negeri

An Ethiopian Airlines staff unloads the AstraZeneca/Oxford vaccines under the COVAX scheme against the coronavirus disease (COVID-19) from a cargo plane at the Bole International Airport in Addis Ababa, Ethiopia March 7, 2021. REUTERS/Tiksa Negeri

An Ethiopian Airlines staff secures the AstraZeneca/Oxford vaccines under the COVAX scheme against the coronavirus disease (COVID-19) at the Bole International Airport in Addis Ababa, Ethiopia March 7, 2021. REUTERS/Tiksa Negeri

A tag is seen on a consignment of the AstraZeneca/Oxford vaccines under the COVAX scheme against the coronavirus disease (COVID-19) at the Bole International Airport in Addis Ababa, Ethiopia March 7, 2021. REUTERS/Tiksa Negeri

An Ethiopian Airlines staff unloads the AstraZeneca/Oxford vaccines under the COVAX scheme against the coronavirus disease (COVID-19) from a cargo plane at the Bole International Airport in Addis Ababa, Ethiopia March 7, 2021. REUTERS/Tiksa Negeri

AstraZeneca/Oxford vaccines under the COVAX scheme against the coronavirus disease (COVID-19) are seen secured at the Bole International Airport in Addis Ababa, Ethiopia March 7, 2021. REUTERS/Tiksa Negeri

Containers carrying AstraZeneca/Oxford vaccines under the COVAX scheme against the coronavirus disease (COVID-19) are seen at the Bole International Airport in Addis Ababa, Ethiopia March 7, 2021. REUTERS/Tiksa Negeri

An Ethiopian Airlines Cargo plane carrying the AstraZeneca/Oxford vaccines under the COVAX scheme against the coronavirus disease (COVID-19) is seen at the Bole International Airport in Addis Ababa, Ethiopia, March 7, 2021. REUTERS/Tiksa Negeri

Two workers are seen next to an Alitalia plane at Fiumicino airport in Rome, Italy, March 5, 2021. REUTERS/Remo Casilli

A worker is seen next to an Alitalia plane at Fiumicino airport in Rome, Italy, March 5, 2021. REUTERS/Remo Casilli

A worker is seen next to an Alitalia plane at Fiumicino airport in Rome, Italy, March 5, 2021. REUTERS/Remo Casilli

World Health Organization (WHO) officials attend the arrival of the first batch of vaccines against the coronavirus disease (COVID-19) at the Kigali international airport in Kigali, Rwanda March 3, 2021. REUTERS/Jean Bizimana

Health and customs workers receive the first batch of vaccines against the coronavirus disease (COVID-19) at the Kigali international airport in Kigali, Rwanda March 3, 2021. REUTERS/Jean Bizimana

Health and customs workers receive the first batch of vaccines against the coronavirus disease (COVID-19) at the Kigali international airport in Kigali, Rwanda March 3, 2021. REUTERS/Jean Bizimana

Kenyan workers receive the first batch of AstraZeneca/Oxford vaccines under the COVAX scheme against the coronavirus disease (COVID-19) at the Jomo Kenyatta international airport in Nairobi, Kenya March 3, 2021. REUTERS/Thomas Mukoya

A Kenyan policeman stands guard after receiving the first batch of AstraZeneca/Oxford vaccines under the COVAX scheme against the coronavirus disease (COVID-19) at the Jomo Kenyatta international airport in Nairobi, Kenya March 3, 2021. REUTERS/Thomas Mukoya

Kenya's Cabinet Secretary for Health Mutahi Kagwe receives the first batch of AstraZeneca/Oxford vaccines under the COVAX scheme against the coronavirus disease (COVID-19) at the Jomo Kenyatta international airport in Nairobi, Kenya March 3, 2021. REUTERS/Thomas Mukoya

Kenya's Cabinet Secretary for Health Mutahi Kagwe reacts after receiving the first batch of AstraZeneca/Oxford vaccines under the COVAX scheme against the coronavirus disease (COVID-19) at the Jomo Kenyatta international airport in Nairobi, Kenya March 3, 2021. REUTERS/Thomas Mukoya

Kenyan health and customs workers receive the first batch of AstraZeneca/Oxford vaccines under the COVAX scheme against the coronavirus disease (COVID-19) at the Jomo Kenyatta international airport in Nairobi, Kenya March 3, 2021. REUTERS/Thomas Mukoya

The first batch of AstraZeneca/Oxford vaccines under the COVAX scheme against the coronavirus disease (COVID-19) is seen wrapped at the Jomo Kenyatta international airport in Nairobi, Kenya March 2, 2021. REUTERS/Thomas Mukoya

Kenya's Cabinet Secretary for Health Mutahi Kagwe and Transport Cabinet Secretary James Macharia receive the first batch of AstraZeneca/Oxford vaccines under the COVAX scheme against the coronavirus disease (COVID-19) at the Jomo Kenyatta international airport in Nairobi, Kenya March 3, 2021. REUTERS/Thomas Mukoya

The first batch of AstraZeneca/Oxford vaccines under the COVAX scheme against the coronavirus disease (COVID-19) are seen wrapped at the Jomo Kenyatta international airport in Nairobi, Kenya March 3, 2021. REUTERS/Thomas Mukoya

Kenyan workers unload the first batch of AstraZeneca/Oxford vaccines under the COVAX scheme against the coronavirus disease (COVID-19) at the Jomo Kenyatta international airport in Nairobi, Kenya March 2, 2021. REUTERS/Thomas Mukoya

Kenyan workers receive the first batch of AstraZeneca/Oxford vaccines under the COVAX scheme against the coronavirus disease (COVID-19) at the Jomo Kenyatta international airport in Nairobi, Kenya March 2, 2021. REUTERS/Thomas Mukoya

A traveller shows his electronic bracelet and its box as Israel introduces them to enforce quarantine amid coronavirus disease (COVID-19) for Israelis who return from abroad in the arrivals terminal of Ben Gurion international airport in Lod, near Tel Aviv, Israel March 1, 2021 REUTERS/ Amir Cohen

Travellers show their electronic bracelets as Israel introduces them to enforce quarantine amid coronavirus disease (COVID-19) for Israelis who return from abroad in the arrival terminal of Ben Gurion international airport in Lod, near Tel Aviv, Israel March 1, 2021 REUTERS/ Amir Cohen

Travellers show their electronic bracelets as Israel introduces them to enforce quarantine amid coronavirus disease (COVID-19) for Israelis who return from abroad in the arrivals terminal of Ben Gurion international airport in Lod, near Tel Aviv, Israel March 1, 2021 REUTERS/ Amir Cohen

Travellers show their electronic bracelets as Israel introduces them to enforce quarantine amid coronavirus disease (COVID-19) for Israelis who return from abroad in the arrival terminal of Ben Gurion international airport in Lod, near Tel Aviv, Israel March 1, 2021 REUTERS/ Amir Cohen

Members of the media shoot pictures and video of travellers showing their electronic bracelets as Israel introduces it to enforce quarantine amid coronavirus disease (COVID-19) for Israelis who return from abroad in the arrival terminal of Ben Gurion international airport in Lod, near Tel Aviv, Israel March 1, 2021 REUTERS/ Amir Cohen