Palestinian man Mohammad Abu Musaed makes bows and arrows for his horseback archery team in the central Gaza Strip May 2, 2021. Picture taken May 2, 2021. REUTERS/Ibraheem Abu Mustafa

Palestinian man Mohammad Abu Musaed makes bows and arrows for his horseback archery team in the central Gaza Strip May 2, 2021. Picture taken May 2, 2021. REUTERS/Ibraheem Abu Mustafa

DJ Blanca Ross wearing a protective face mask plays music inside La Merce cultural center during Open Girona initiative, which aims to provide a pilot digital health pass scheme to reopen restaurants and businesses amid the coronavirus disease (COVID-19) pandemic, in Girona, Spain May 1, 2021. Picture taken May 1, 2021. REUTERS/Nacho Doce

Revellers wearing protective face masks dance inside La Merce cultural center during Open Girona initiative, which aims to provide a pilot digital health pass scheme to reopen restaurants and businesses amid the coronavirus disease (COVID-19) pandemic, in Girona, Spain May 1, 2021. Picture taken May 1, 2021. REUTERS/Nacho Doce

A cook wearing a protective face mask cooks at Indigo restaurant during Open Girona initiative, which aims to provide a pilot digital health pass scheme to reopen restaurants and businesses amid the coronavirus disease (COVID-19) pandemic, in Girona, Spain May 1, 2021. Picture taken May 1, 2021. REUTERS/Nacho Doce

Ana Mora, 40, takes a picture of a friend before dinner at Indigo restaurant during Open Girona initiative, which aims to provide a pilot digital health pass scheme to reopen restaurants and businesses amid the coronavirus disease (COVID-19) pandemic, in Girona, Spain May 1, 2021. Picture taken May 1, 2021. REUTERS/Nacho Doce

Revellers wearing protective face masks dance inside La Merce cultural center during Open Girona initiative, which aims to provide a pilot digital health pass scheme to reopen restaurants and businesses amid the coronavirus disease (COVID-19) pandemic, in Girona, Spain May 1, 2021. Picture taken May 1, 2021. REUTERS/Nacho Doce

Revellers wearing protective face masks dance inside La Merce cultural center during Open Girona initiative, which aims to provide a pilot digital health pass scheme to reopen restaurants and businesses amid the coronavirus disease (COVID-19) pandemic, in Girona, Spain May 1, 2021. Picture taken May 1, 2021. REUTERS/Nacho Doce

Revellers wearing protective face masks dance inside La Merce cultural center during Open Girona initiative, which aims to provide a pilot digital health pass scheme to reopen restaurants and businesses amid the coronavirus disease (COVID-19) pandemic, in Girona, Spain May 1, 2021. Picture taken May 1, 2021. REUTERS/Nacho Doce

Revellers wearing protective face masks dance inside La Merce cultural center during Open Girona initiative, which aims to provide a pilot digital health pass scheme to reopen restaurants and businesses amid the coronavirus disease (COVID-19) pandemic, in Girona, Spain May 1, 2021. Picture taken May 1, 2021. REUTERS/Nacho Doce

A reveller wearing a protective face mask dances inside La Merce cultural center during Open Girona initiative, which aims to provide a pilot digital health pass scheme to reopen restaurants and businesses amid the coronavirus disease (COVID-19) pandemic, in Girona, Spain May 1, 2021. Picture taken May 1, 2021. REUTERS/Nacho Doce

A reveller wearing a protective face mask dances inside La Merce cultural center during Open Girona initiative, which aims to provide a pilot digital health pass scheme to reopen restaurants and businesses amid the coronavirus disease (COVID-19) pandemic, in Girona, Spain May 1, 2021. Picture taken May 1, 2021. REUTERS/Nacho Doce

Lit candles are seen as revellers wearing protective face masks dance inside La Merce cultural center during Open Girona initiative, which aims to provide a pilot digital health pass scheme to reopen restaurants and businesses amid the coronavirus disease (COVID-19) pandemic, in Girona, Spain May 1, 2021. Picture taken May 1, 2021. REUTERS/Nacho Doce

Revellers wearing protective face masks dance inside La Merce cultural center during Open Girona initiative, which aims to provide a pilot digital health pass scheme to reopen restaurants and businesses amid the coronavirus disease (COVID-19) pandemic, in Girona, Spain May 1, 2021. Picture taken May 1, 2021. REUTERS/Nacho Doce

Pharmacist Maite Baleri collects a swab sample from Isabel Mier, 21, during a rapid antigen test before dancing inside La Merce cultural center during Open Girona initiative, which aims to provide a pilot digital health pass scheme to reopen restaurants and businesses amid the coronavirus disease (COVID-19) pandemic, in Girona, Spain May 1, 2021. Picture taken May 1, 2021. REUTERS/Nacho Doce

Pharmacist Maite Baleri collects a swab sample from Oriol Garreta, 22, during a rapid antigen test before dancing inside La Merce cultural center during Open Girona initiative, which aims to provide a pilot digital health pass scheme to reopen restaurants and businesses amid the coronavirus disease (COVID-19) pandemic, in Girona, Spain May 1, 2021. Picture taken May 1, 2021. REUTERS/Nacho Doce

Revellers wearing protective face masks dance inside La Merce cultural center during Open Girona initiative, which aims to provide a pilot digital health pass scheme to reopen restaurants and businesses amid the coronavirus disease (COVID-19) pandemic, in Girona, Spain May 1, 2021. Picture taken May 1, 2021. REUTERS/Nacho Doce

Revellers wearing protective face masks show their digital passes before dancing inside La Merce cultural center during Open Girona initiative, which aims to provide a pilot digital health pass scheme to reopen restaurants and businesses amid the coronavirus disease (COVID-19) pandemic, in Girona, Spain May 1, 2021. Picture taken May 1, 2021. REUTERS/Nacho Doce

A member of the security forces aims his weapon during a protest against the tax reform of President Ivan Duque's government in Bogota, Colombia, April 30, 2021. REUTERS/Luisa Gonzalez

An Israeli soldier aims a weapon as a demonstrator waves a Palestinian flag during a protest against Israeli settlements, in Beit Dajan in the Israeli-occupied West Bank April 30, 2021. REUTERS/Raneen Sawafta

A Palestinian rider shoots an arrow at a target during a horseback archery training session in Zawayda in the central Gaza Strip April 28, 2021. Picture taken April 28, 2021. REUTERS/Ibraheem Abu Mustafa

A young Palestinian rider takes part in a horseback archery training session in Zawayda in the central Gaza Strip April 28, 2021. Picture taken April 28, 2021. REUTERS/Ibraheem Abu Mustafa

Palestinian coach Mohammad Abu Musaed shoots an arrow at a target as he instructs his team during a horseback archery training session in Zawayda in the central Gaza Strip April 28, 2021. Picture taken April 28, 2021. REUTERS/Ibraheem Abu Mustafa

A young Palestinian rider shoots an arrow at a target during a horseback archery training session in Zawayda in the central Gaza Strip April 28, 2021. Picture taken April 28, 2021. REUTERS/Ibraheem Abu Mustafa

A Palestinian rider shoots an arrow at a target during a horseback archery training session in Zawayda in the central Gaza Strip April 28, 2021. Picture taken April 28, 2021. REUTERS/Ibraheem Abu Mustafa

A young Palestinian rider shoots an arrow at a target during a horseback archery training session in Zawayda in the central Gaza Strip April 28, 2021. Picture taken April 28, 2021. REUTERS/Ibraheem Abu Mustafa

Palestinian coach Mohammad Abu Musaed instructs his team during a horseback archery training session in Zawayda in the central Gaza Strip April 28, 2021. Picture taken April 28, 2021. REUTERS/Ibraheem Abu Mustafa

Amin Saleh, Under-Secretary of Planning at Sudanese Ministry of Finance works at his office in Khartoum, Sudan April 28, 2021. Picture taken April 28, 2021. REUTERS/El-Tayeb Siddig

Magda Ahmed, Sudanese mother of orphan children who applied for Sudan’s Thamarat Family Support Programme, holds a bowl of food in South Khartoum April 26, 2021. Picture taken April 26, 2021. REUTERS/El-Tayeb Siddig

Magda Ahmed, Sudanese mother of orphan children who applied for Sudan’s Thamarat Family Support Programme, holds a bowl of food in South Khartoum April 26, 2021. Picture taken April 26, 2021. REUTERS/El-Tayeb Siddig

Arafa Mohammed, a Sudanese housewife who applied for Sudan’s Thamarat Family Support Programme, poses for a picture in South Khartoum April 26, 2021. Picture taken April 26, 2021. REUTERS/El-Tayeb Siddig

Syrian refugee Ibrahim al-Hussein, an amputee swimmer who is aiming to be part of a Refugee Paralympic Team for the Tokyo 2020 Paralympic Games, holds a bottle after his training Olympic Aquatic Centre in Athens, Greece, April 26, 2021. Picture taken April 26, 2021. REUTERS/Alkis Konstantinidis TPX IMAGES OF THE DAY

Syrian refugee Ibrahim al-Hussein, an amputee swimmer who is aiming to be part of a Refugee Paralympic Team for the Tokyo 2020 Paralympic Games, dresses after his training Olympic Aquatic Centre in Athens, Greece, April 26, 2021. Picture taken April 26, 2021. REUTERS/Alkis Konstantinidis

Syrian refugee Ibrahim al-Hussein, an amputee swimmer who is aiming to be part of a Refugee Paralympic Team for the Tokyo 2020 Paralympic Games, trains at the Olympic Aquatic Centre in Athens, Greece, April 26, 2021. Picture taken April 26, 2021. REUTERS/Alkis Konstantinidis

Syrian refugee Ibrahim al-Hussein, an amputee swimmer who is aiming to be part of a Refugee Paralympic Team for the Tokyo 2020 Paralympic Games, trains at the Olympic Aquatic Centre in Athens, Greece, April 26, 2021. Picture taken April 26, 2021. REUTERS/Alkis Konstantinidis

Syrian refugee Ibrahim al-Hussein, an amputee swimmer who is aiming to be part of a Refugee Paralympic Team for the Tokyo 2020 Paralympic Games, trains at the Olympic Aquatic Centre in Athens, Greece, April 26, 2021. Picture taken April 26, 2021. REUTERS/Alkis Konstantinidis

Syrian refugee Ibrahim al-Hussein, an amputee swimmer who is aiming to be part of a Refugee Paralympic Team for the Tokyo 2020 Paralympic Games, speaks with a fellow athlete during his training at the Olympic Aquatic Centre in Athens, Greece, April 26, 2021. Picture taken April 26, 2021. REUTERS/Alkis Konstantinidis

Syrian refugee Ibrahim al-Hussein, an amputee swimmer who is aiming to be part of a Refugee Paralympic Team for the Tokyo 2020 Paralympic Games, trains at the Olympic Aquatic Centre in Athens, Greece, April 26, 2021. Picture taken April 26, 2021. REUTERS/Alkis Konstantinidis

Syrian refugee Ibrahim al-Hussein, an amputee swimmer who is aiming to be part of a Refugee Paralympic Team for the Tokyo 2020 Paralympic Games, trains at the Olympic Aquatic Centre in Athens, Greece, April 26, 2021. Picture taken April 26, 2021. REUTERS/Alkis Konstantinidis

Syrian refugee Ibrahim al-Hussein, an amputee swimmer who is aiming to be part of a Refugee Paralympic Team for the Tokyo 2020 Paralympic Games, trains at the Olympic Aquatic Centre in Athens, Greece, April 26, 2021. Picture taken April 26, 2021. REUTERS/Alkis Konstantinidis

Syrian refugee Ibrahim al-Hussein, an amputee swimmer who is aiming to be part of a Refugee Paralympic Team for the Tokyo 2020 Paralympic Games, adjusts his goggles during his training at the Olympic Aquatic Centre in Athens, Greece, April 26, 2021. Picture taken April 26, 2021. REUTERS/Alkis Konstantinidis

Syrian refugee Ibrahim al-Hussein, an amputee swimmer who is aiming to be part of a Refugee Paralympic Team for the Tokyo 2020 Paralympic Games, makes his way to the pool during his training at the Olympic Aquatic Centre in Athens, Greece, April 26, 2021. Picture taken April 26, 2021. REUTERS/Alkis Konstantinidis

Syrian refugee Ibrahim al-Hussein, an amputee swimmer who is aiming to be part of a Refugee Paralympic Team for the Tokyo 2020 Paralympic Games, is seen during his training at the Olympic Aquatic Centre in Athens, Greece, April 26, 2021. Picture taken April 26, 2021. REUTERS/Alkis Konstantinidis

Syrian refugee Ibrahim al-Hussein, an amputee swimmer who is aiming to be part of a Refugee Paralympic Team for the Tokyo 2020 Paralympic Games, prepares for his training at the Olympic Aquatic Centre in Athens, Greece, April 26, 2021. Picture taken April 26, 2021. REUTERS/Alkis Konstantinidis

Syrian refugee Ibrahim al-Hussein, an amputee swimmer who is aiming to be part of a Refugee Paralympic Team for the Tokyo 2020 Paralympic Games, trains at the Olympic Aquatic Centre in Athens, Greece, April 26, 2021. Picture taken April 26, 2021. REUTERS/Alkis Konstantinidis

Syrian refugee Ibrahim al-Hussein, an amputee swimmer who is aiming to be part of a Refugee Paralympic Team for the Tokyo 2020 Paralympic Games, reads his training program at the Olympic Aquatic Centre in Athens, Greece, April 26, 2021. Picture taken April 26, 2021. REUTERS/Alkis Konstantinidis

Syrian refugee Ibrahim al-Hussein, an amputee swimmer who is aiming to be part of a Refugee Paralympic Team for the Tokyo 2020 Paralympic Games, prepares for his training at the Olympic Aquatic Centre in Athens, Greece, April 26, 2021. Picture taken April 26, 2021. REUTERS/Alkis Konstantinidis

A woman waits to receive a dose of the vaccine against coronavirus disease (COVID-19), as part of a pilot test which aims to apply 20,000 vaccines per day in coming months, at Fira de Montjuic in Barcelona, Spain, April 26, 2021. REUTERS/Nacho Doce

A man receives a dose of the vaccine against coronavirus disease (COVID-19), as part of a pilot test which aims to apply 20,000 vaccines per day in coming months, at Fira de Montjuic in Barcelona, Spain, April 26, 2021. REUTERS/Nacho Doce

People wait to receive a dose of the coronavirus disease (COVID-19) vaccine, as part of a pilot test which aims to apply 20,000 vaccines per day in coming months, at Fira de Montjuic in Barcelona, Spain, April 26, 2021. REUTERS/Nacho Doce

Rosa Mafue, 66, from Equatorial Guinea, prepares to receive a dose of the vaccine against coronavirus disease (COVID-19), as part of a pilot test which aims to apply 20,000 vaccines per day in coming months, at Fira de Montjuic in Barcelona, Spain, April 26, 2021. REUTERS/Nacho Doce

Rosa Mafue, 66, from Equatorial Guinea, reacts as she receive a dose of the vaccine against coronavirus disease (COVID-19), as part of a pilot test which aims to apply 20,000 vaccines per day in coming months, at Fira de Montjuic in Barcelona, Spain, April 26, 2021. REUTERS/Nacho Doce

A healthcare worker holds a dose of AstraZeneca's vaccine against coronavirus disease (COVID-19), during a pilot test which aims to apply 20,000 vaccines per day in coming months, at Fira de Montjuic in Barcelona, Spain, April 26, 2021. REUTERS/Nacho Doce

Needles and a vial of AstraZeneca's vaccine against coronavirus disease (COVID-19) are pictured during a pilot test which aims to apply 20,000 vaccines per day in coming months, at Fira de Montjuic in Barcelona, Spain, April 26, 2021. REUTERS/Nacho Doce

A man waits to receive a dose of the coronavirus disease (COVID-19) vaccine, as part of a pilot test which aims to apply 20,000 vaccines per day in coming months, at Fira de Montjuic in Barcelona, Spain, April 26, 2021. REUTERS/Nacho Doce

People wait to receive a dose of the coronavirus disease (COVID-19) vaccine, as part of a pilot test which aims to apply 20,000 vaccines per day in coming months, at Fira de Montjuic in Barcelona, Spain, April 26, 2021. REUTERS/Nacho Doce

A man receives a dose of the vaccine against coronavirus disease (COVID-19), as part of a pilot test which aims to apply 20,000 vaccines per day in coming months, at Fira de Montjuic in Barcelona, Spain, April 26, 2021. REUTERS/Nacho Doce

A woman receives a dose of the vaccine against coronavirus disease (COVID-19), as part of a pilot test which aims to apply 20,000 vaccines per day in coming months, at Fira de Montjuic in Barcelona, Spain, April 26, 2021. REUTERS/Nacho Doce

Angel Mancebo, 60, receives a dose of the AstraZeneca's vaccine against coronavirus disease (COVID-19), as part of a pilot test which aims to apply 20,000 vaccines per day in coming months, at Fira de Montjuic in Barcelona, Spain, April 26, 2021. REUTERS/Nacho Doce