A person receives a dose of a coronavirus disease (COVID-19) vaccine, as South Africa rolls out the coronavirus disease (COVID-19) vaccination to the elderly at the Munsieville Care for the Aged Centre outside Johannesburg, South Africa May 17, 2021. REUTERS/Siphiwe Sibeko

A healthcare worker in personal protective equipment takes a swab sample from a person to be tested for COVID-19 as travellers return to the capital city after the Eid al-Fitr festival, amid the coronavirus disease (COVID-19) pandemic, in Cikarang, Bekasi, on the outskirts of Jakarta, Indonesia, May 17, 2021. REUTERS/Ajeng Dinar Ulfiana

A healthcare worker in personal protective equipment takes a swab sample from a man to be tested for COVID-19 as travellers return to the capital city after the Eid al-Fitr festival, amid the coronavirus disease (COVID-19) pandemic, in Cikarang, Bekasi, on the outskirts of Jakarta, Indonesia, May 17, 2021. REUTERS/Ajeng Dinar Ulfiana

A demonstrator hands roses to a person during a protest to express solidarity with the Palestinian people, near the Israeli embassy in Amman, Jordan May 16, 2021. The sign reads "One rose for the soul of each rose kidnapped by the occupation #victory_for us". REUTERS/Muath Freij

Demonstrators hand a rose to a person during a protest to express solidarity with the Palestinian people, near the Israeli embassy in Amman, Jordan May 16, 2021. The sign reads "One rose for the soul of each rose kidnapped by the occupation #victory_for us". REUTERS/Muath Freij

Demonstrators hand a rose to a person during a protest to express solidarity with the Palestinian people, near the Israeli embassy in Amman, Jordan May 16, 2021. The sign reads "One rose for the soul of each rose kidnapped by the occupation #victory_for us". REUTERS/Muath Freij

A person votes in the elections for governors, mayors, councillors and constitutional assembly members to draft a new constitution to replace Chile's charter, in Santiago, Chile, May 16, 2021. REUTERS/Pablo Sanhueza

A person fills their car with gas as people queue at a Shell gas station, after a cyberattack crippled the biggest fuel pipeline in the country, run by Colonial Pipeline, in Washington, D.C., U.S., May 15, 2021. REUTERS/Andrew Kelly

A person fills a fuel container at a Shell gas station, after a cyberattack crippled the biggest fuel pipeline in the country, run by Colonial Pipeline, in Washington, D.C., U.S., May 15, 2021. REUTERS/Andrew Kelly

A person holds a placard reading "Peace and justice for Palestine" during a protest in support of Palestinians following a flare-up of Israeli-Palestinian violence, in Paris, France, May 15, 2021. REUTERS/Benoit Tessier

A person holds a sign during a demonstration to mark the Nakba and in support of Palestinians, in Berlin, Germany May 15, 2021. REUTERS/Christian Mang

A person in graduation regalia stands on the Lincoln Memorial in Washington, D.C., U.S., May 14, 2021. REUTERS/Andrew Kelly

A person with no mask takes pictures in Times Square during the coronavirus disease (COVID-19) pandemic in the Manhattan borough of New York City, New York, U.S., May 14, 2021. REUTERS/Carlo Allegri

A person with no mask takes pictures in Times Square during the coronavirus disease (COVID-19) pandemic in the Manhattan borough of New York City, New York, U.S., May 14, 2021. REUTERS/Carlo Allegri

A person with no mask takes pictures in Times Square during the coronavirus disease (COVID-19) pandemic in the Manhattan borough of New York City, New York, U.S., May 14, 2021. REUTERS/Carlo Allegri

A person takes part in a Fridays for Future protest outside the Austrian Economic Chamber, in Vienna, Austria, May 14, 2021. REUTERS/Lisi Niesner

A person takes part in a Fridays for Future protest outside the Austrian Economic Chamber, in Vienna, Austria, May 14, 2021. REUTERS/Lisi Niesner

A person receives a vaccine against the coronavirus disease (COVID-19) at a sports hall in Berlin, Germany, May 14, 2021. REUTERS/Axel Schmidt

A person takes a swab sample for the coronavirus disease (COVID-19) at a surge testing site in London, Britain, May 14, 2021. REUTERS/Hannah McKay

A person takes a swab sample for the coronavirus disease (COVID-19) at a surge testing site in London, Britain, May 14, 2021. REUTERS/Hannah McKay

A person rides a bicycle past the U.S. District Court in Washington, D.C., U.S., May 13, 2021. REUTERS/Andrew Kelly

A person walks by the Department of Labor headquarters in Washington, D.C., U.S., May 13, 2021. REUTERS/Andrew Kelly

A person walks in front of the District of Columbia Court of Appeals in Washington, D.C., U.S., May 13, 2021. REUTERS/Andrew Kelly

A person walks past the United States Supreme Court Building in Washington, D.C., U.S., May 13, 2021. REUTERS/Andrew Kelly

A person in a mask walks past the United States Supreme Court Building in Washington, D.C., U.S., May 13, 2021. REUTERS/Andrew Kelly

Black Movement activists protest against racism and police violence, on the day that marks 133 years since the abolition of Slavery in the country, in Brasilia, Brazil May 13, 2021. REUTERS/Ueslei Marcelino TPX IMAGES OF THE DAY

People enjoy the weather in Washington Square Park in New York City, U.S., May 13, 2021. REUTERS/Brendan McDermid TPX IMAGES OF THE DAY

A person holds a syringe with a dose of the Pfizer-BioNTech coronavirus disease (COVID-19) vaccine in Mexico City, Mexico May 13, 2021. REUTERS/Edgard Garrido

Actress Jennifer Garner and U.S. first lady Jill Biden meet a person getting vaccinated during a visit at Capital High School in Charleston, West Virginia, U.S., May 13, 2021. Oliver Contreras/Pool via REUTERS

A person walks by the headquarters of the United States Forest Service in the Sidney R. Yates Building is seen in Washington, D.C., U.S., May 13, 2021. REUTERS/Andrew Kelly

A person walks by the offices of the International Brotherhood of Electrical Workers (IBEW) labor union in Washington, D.C., U.S., May 13, 2021. REUTERS/Andrew Kelly

Volunteers carry the body of a person who died due to the coronavirus disease (COVID-19), at a crematorium ground in Giddenahalli village on the outskirts of Bengaluru, India, May 13, 2021. REUTERS/Samuel Rajkumar

A person walks with a dog as cattle graze at Shenley Toot field in a residential area of Shenley Church End, in Milton Keynes, Britain May 13, 2021. REUTERS/Andrew Boyers

A person holds a sign that reads "Pray for the Peace of Jerusalem" at a Pro-Israel rally at Times Square in New York City, U.S., May 12, 2021. REUTERS/David 'Dee' Delgado

An ICU nurse wearing personal protection equipment (PPE) treats a patient suffering from the coronavirus disease (COVID-19) in the Intensive Care Unit (ICU) at the King Chulalongkorn Memorial Hospital in Bangkok, Thailand, May 12, 2021. Picture taken May 12, 2021. REUTERS/Athit Perawongmetha TPX IMAGES OF THE DAY

A doctor and an ICU nurse wearing personal protection equipment (PPE) treat patients suffering from the coronavirus disease (COVID-19) in the Intensive Care Unit (ICU) at the King Chulalongkorn Memorial Hospital in Bangkok, Thailand, May 12, 2021. Picture taken May 12, 2021. REUTERS/Athit Perawongmetha

A doctor wearing personal protection equipment (PPE) treats a patient suffering from the coronavirus disease (COVID-19) in the Intensive Care Unit (ICU) at the King Chulalongkorn Memorial Hospital in Bangkok, Thailand, May 12, 2021. Picture taken May 12, 2021. REUTERS/Athit Perawongmetha

A doctor and ICU nurses wearing personal protection equipment (PPE) treat a patient suffering from the coronavirus disease (COVID-19) in the Intensive Care Unit (ICU) at the King Chulalongkorn Memorial Hospital in Bangkok, Thailand, May 12, 2021. Picture taken May 12, 2021. REUTERS/Athit Perawongmetha

Doctors and ICU nurses wearing personal protection equipment (PPE) treat a patient suffering from the coronavirus disease (COVID-19) in the Intensive Care Unit (ICU) at the King Chulalongkorn Memorial Hospital in Bangkok, Thailand, May 12, 2021. Picture taken May 12, 2021. REUTERS/Athit Perawongmetha

A doctor and ICU nurses wearing personal protection equipment (PPE) treat a patient suffering from the coronavirus disease (COVID-19) in the Intensive Care Unit (ICU) at the King Chulalongkorn Memorial Hospital in Bangkok, Thailand, May 12, 2021. Picture taken May 12, 2021. REUTERS/Athit Perawongmetha

ICU nurses wearing personal protection equipment (PPE) treat a patient suffering from the coronavirus disease (COVID-19) in the Intensive Care Unit (ICU) at the King Chulalongkorn Memorial Hospital in Bangkok, Thailand, May 12, 2021. Picture taken May 12, 2021. REUTERS/Athit Perawongmetha

A person holding a rosary attends a mass in tribute to the victims after a deadly police operation in Jacarezinho slum in Rio de Janeiro, Brazil, May 12, 2021. REUTERS/Ricardo Moraes

Healthcare workers transfer the body of a person who died from the coronavirus disease (COVID-19), inside a hospital premises in Kolkata, India, May 12, 2021. REUTERS/Rupak De Chowdhuri

A doctor and nurses receive help from colleagues to put on their personal protective equipment (PPE) before attending to a coronavirus disease (COVID-19) patient in the Emerging Infectious Disease Clinic Intensive Care Unit at King Chulalongkorn Memorial Hospital in Bangkok, Thailand, May 11, 2021. Picture taken May 11, 2021. REUTERS/Athit Perawongmetha

A doctor and ICU nurses wearing personal protection equipment (PPE) treat a patient suffering from the coronavirus disease (COVID-19) in the Intensive Care Unit (ICU) at the King Chulalongkorn Memorial Hospital in Bangkok, Thailand, May 11, 2021. Picture taken May 11, 2021. REUTERS/Athit Perawongmetha

An ICU nurse wearing personal protection equipment (PPE) attends to a patient suffering from the coronavirus disease (COVID-19) in the Intensive Care Unit (ICU) at the King Chulalongkorn Memorial Hospital in Bangkok, Thailand, May 11, 2021. Picture taken May 11, 2021. REUTERS/Athit Perawongmetha

A doctor takes off her personal protection equipment (PPE) after treating a patient suffering from the coronavirus disease (COVID-19) in the Intensive Care Unit (ICU) at the King Chulalongkorn Memorial Hospital in Bangkok, Thailand, May 11, 2021. Picture taken May 11, 2021. REUTERS/Athit Perawongmetha TPX IMAGES OF THE DAY

An ICU nurse wearing personal protection equipment (PPE) uses a mobile x-ray machine as she treats a patient suffering from the coronavirus disease (COVID-19) in the Intensive Care Unit (ICU) at the King Chulalongkorn Memorial Hospital in Bangkok, Thailand, May 11, 2021. Picture taken May 11, 2021. REUTERS/Athit Perawongmetha

A doctor and an ICU nurse wearing personal protection equipment (PPE) treat a patient suffering from the coronavirus disease (COVID-19) in the Intensive Care Unit (ICU) at the King Chulalongkorn Memorial Hospital in Bangkok, Thailand, May 11, 2021. Picture taken May 11, 2021. REUTERS/Athit Perawongmetha

An ICU nurse wearing personal protection equipment (PPE) treats a patient suffering from the coronavirus disease (COVID-19) in the Intensive Care Unit (ICU) at the King Chulalongkorn Memorial Hospital in Bangkok, Thailand, May 11, 2021. Picture taken May 11, 2021. REUTERS/Athit Perawongmetha

Relatives of missing persons react after a march to demand justice for the siblings Jose Alberto, Ana Karen and Luis Angel Gonzalez Moreno, who were abducted and killed by unknown assailants, according to local media, in Guadalajara, in Jalisco state, Mexico May 11, 2021. REUTERS/Fernando Carranza

Relatives of missing persons react after a march to demand justice for the siblings Jose Alberto, Ana Karen and Luis Angel Gonzalez Moreno, who were abducted and killed by unknown assailants, according to local media, in Guadalajara, in Jalisco state, Mexico May 11, 2021. REUTERS/Fernando Carranza

Relatives of missing persons hold up photos of their loved ones during a march to demand justice for the siblings Jose Alberto, Ana Karen and Luis Angel Gonzalez Moreno, who were abducted and killed by unknown assailants, according to local media, in Guadalajara, in Jalisco state, Mexico May 11, 2021. REUTERS/Fernando Carranza

A person sleeps on a bench in front of the United States Capitol building in Washington, D.C., U.S., May 11, 2021. REUTERS/Andrew Kelly

A person runs on the beach amid the coronavirus disease (COVID-19) outbreak in Ostend, Belgium May 11, 2021. REUTERS/Yves Herman

A person receives a dose of the Pfizer-BioNTech coronavirus disease (COVID-19) vaccine during mass vaccination in Mexico City, Mexico May 11, 2021. REUTERS/Henry Romero

A person receives a dose of the Pfizer-BioNTech coronavirus disease (COVID-19) vaccine during mass vaccination in Mexico City, Mexico May 11, 2021. REUTERS/Henry Romero

A person receives a dose of the Pfizer-BioNTech coronavirus disease (COVID-19) vaccine during mass vaccination in Mexico City, Mexico May 11, 2021. REUTERS/Henry Romero

Medical personnel wearing personal protective equipment (PPE) transfers a patient suffering from the coronavirus disease (COVID-19) from the COVID-19 ward at a clinic in Darmstadt, Germany, May 11, 2021. REUTERS/Kai Pfaffenbach

Nurse Rebecca and male nurse Steffen take off their personal protective equipment (PPE) after treating patients suffering from the coronavirus disease (COVID-19) at the COVID-19 ward at a clinic in Darmstadt, Germany, May 11, 2021. REUTERS/Kai Pfaffenbach