People wait to cremate victims who died due to the coronavirus disease (COVID-19), at a crematorium ground in New Delhi, India, April 23, 2021. REUTERS/Danish Siddiqui/File Photo TPX IMAGES OF THE DAY SEARCH "GLOBAL POY" FOR THIS STORY. SEARCH "REUTERS POY" FOR ALL BEST OF 2021 PACKAGES. 

First responder Robson Felix da Silva, member of an Emergency Mobile Care Service (SAMU) team, resuscitates a patient suspected to have the coronavirus disease (COVID-19) in Sao Bernardo do Campo, Brazil March 24, 2021. REUTERS/Amanda Perobelli TPX IMAGES OF THE DAY 

Adrian James, 2, who tested positive for the coronavirus disease (COVID-19), breathes with the help of a ventilator at SSM Health Cardinal Glennon Children's Hospital in St. Louis, Missouri, U.S., October 5, 2021. REUTERS/Callaghan O'Hare/File Photo TPX IMAGES OF THE DAY SEARCH "GLOBAL POY" FOR THIS STORY. SEARCH "REUTERS POY" FOR ALL BEST OF 2021 PACKAGES. 

A protester confronts riot police officers during a demonstration against France's restrictions, including compulsory health passes, to fight the coronavirus disease (COVID-19) pandemic, in Paris, France, September 11, 2021. REUTERS/Benoit Tessier TPX IMAGES OF THE DAY 

Yoshia Uomoto, 98, reacts as her son Mark Uomoto and niece Gail Yamada surprise her with their first in-person visit in a year, after COVID-19 restrictions are lifted at Nikkei Manor, an assisted living facility primarily serving Japanese-American seniors, in Seattle, Washington, U.S. March 30, 2021. REUTERS/Lindsey Wasson/File Photo TPX IMAGES OF THE DAY SEARCH "GLOBAL POY" FOR THIS STORY. SEARCH "REUTERS POY" FOR ALL BEST OF 2021 PACKAGES. 

Long COVID sufferer Susana Matarranz, a 44-year-old primary school teacher, poses for a photograph taken through blue plastic, in Madrid, Spain, March 8, 2021. The photograph was taken through blue plastic to visualise the effects of long COVID. Matarranz gets emotional when she explains how much she misses her students. Matarranz got infected on March 1, 2020. At first, she only noticed the loss of smell and taste, but soon afterwards she started suffering from severe stomach problems and acute joint pain. "My right collar bone is swollen, I can barely lift my arm, I feel like I have aged prematurely," she said. Matarranz returned to work in September, but got infected a second time in November and hasn't been able to continue teaching ever since. "The part of me that is my profession is empty, like that blackboard. A piece of my heart, which are my students, whom I love dearly, feels empty and I feel like at this moment there's nothing I can do to fill it in." REUTERS/Susana Vera SEARCH "SPAIN LONGCOVID" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY. 

Kelvia Andrea Goncalves, 16, is supported by her aunt Vanderleia dos Reis Brasao, 37, as she reacts during the burial of her mother Andrea dos Reis Brasao, 39, who passed away due to the coronavirus disease (COVID-19) at Delphina Aziz hospital, at the Parque Taruma cemetery in Manaus, Brazil, January 17, 2021. REUTERS/Bruno Kelly/File Photo TPX IMAGES OF THE DAY SEARCH "GLOBAL POY" FOR THIS STORY. SEARCH "REUTERS POY" FOR ALL BEST OF 2021 PACKAGES. 

A man is doused by a water cannon during clashes as people gather at the Bois de la Cambre/Ter Kamerenbos park for a party called "La Boum 2" in defiance of Belgium's coronavirus disease (COVID-19) social distancing measures and restrictions, in Brussels, Belgium May 1, 2021. REUTERS/Yves Herman/File Photo TPX IMAGES OF THE DAY SEARCH "GLOBAL POY" FOR THIS STORY. SEARCH "REUTERS POY" FOR ALL BEST OF 2021 PACKAGES. 

Boris Bryant, a (COVID-19) positive patient, lays in his isolation room on the Covid-19 unit at University of Arkansas for Medical Sciences (UAMS) in Little Rock, Arkansas, U.S., August 16, 2021. REUTERS/Shannon Stapleton TPX IMAGES OF THE DAY 

Medical workers move a patient at the intensive care unit (ICU) of the Sotiria hospital, amid the coronavirus disease (COVID-19) pandemic, in Athens, Greece, February 9, 2021. REUTERS/Giorgos Moutafis TPX IMAGES OF THE DAY 

Betty Nelson, 81, who got in line at 6 a.m., reads on her tablet while waiting for a coronavirus disease (COVID-19) vaccine clinic run by the Jamestown S'Klallam Tribe to open in Sequim, Washington, U.S. January 23, 2021. The tribe, which is sharing its excess vaccines with Sequim residents, was able to begin the first-come, first-served site earlier than other locations in the state due to its tribal sovereignty. REUTERS/Lindsey Wasson TPX IMAGES OF THE DAY 

Women hide their faces in a night club during a civil police operation tackling COVID-19 restrictions violations, amid a rise in coronavirus disease cases and deaths in Sao Paulo, Brazil April 2, 2021. Picture taken April 2, 2021. REUTERS/Amanda Perobelli TPX IMAGES OF THE DAY 

A migrant worker passes his son through a bus window as they return to their village, after Delhi government ordered a six-day lockdown to limit the spread of the coronavirus disease (COVID-19), in Ghaziabad on the outskirts of New Delhi, India, April 20, 2021. REUTERS/Adnan Abidi TPX IMAGES OF THE DAY 

People line up for coronavirus disease (COVID-19) tests in their vehicles at Dodger Stadium in Los Angeles, California, U.S., January 4, 2021. REUTERS/Lucy Nicholson TPX IMAGES OF THE DAY 

A Naga Sadhu, or Hindu holy man wears a mask before the procession for taking a dip in the Ganges river during Shahi Snan at "Kumbh Mela", or the Pitcher Festival, amidst the spread of the coronavirus disease (COVID-19), in Haridwar, India, April 12, 2021. REUTERS/Danish Siddiqui/File Photo TPX IMAGES OF THE DAY SEARCH "GLOBAL POY" FOR THIS STORY. SEARCH "REUTERS POY" FOR ALL BEST OF 2021 PACKAGES. 

Stuttgart Ballet company dancers Elisa Badenes and Friedemann Vogel take part in performance "Social Distance Stacks" of conceptual artist Florian Mehnert at the John Cranko School in Stuttgart, Germany, February 26, 2021. Picture taken February 26, 2021. REUTERS/Ralph Orlowski TPX IMAGES OF THE DAY 

Patients suffering from the coronavirus disease (COVID-19) lay in beds at the Stark Arena sports venue that is turned into a COVID-19 hospital in Belgrade, Serbia, April 22, 2021. REUTERS/Marko Djurica/File Photo TPX IMAGES OF THE DAY SEARCH "GLOBAL POY" FOR THIS STORY. SEARCH "REUTERS POY" FOR ALL BEST OF 2021 PACKAGES 

Dr. Mayank Amin draws the Pfizer-BioNTech coronavirus disease (COVID-19) vaccine at a clinic ran by Skippack Pharmacy in Collegeville, Pennsylvania, U.S., March 7, 2021. Picture taken March 7, 2021. REUTERS/Hannah Beier 

Municipal health workers travel on a boat along the Solimoes river banks, where Ribeirinhos (river dwellers) live, to administer the AstraZeneca/Oxford vaccine for the coronavirus disease (COVID-19) to the residents, in Manacapuru, Amazonas state, Brazil, February 1, 2021. Picture taken February 1, 2021. REUTERS/Bruno Kelly TPX IMAGES OF THE DAY 

People wait to receive a dose of the coronavirus disease (COVID-19) vaccine at an immediate vaccination center operating at the Sadat underground metro station, in Cairo, Egypt, November 14, 2021. REUTERS/Mohamed Abd El Ghany TPX IMAGES OF THE DAY 

Ardi Novriansyah, 41, a volunteer undertaker wears personal protective equipment as he takes a short-break while carrying the coffin of 64-year-old Yoyoh Sa'diah who passed away due to complications related to COVID-19 whilst isolating at her home in Bogor, West Java province, Indonesia, July 8, 2021. Ardi says his interest in humanity led him to take such a difficult job along with the camaraderie with his fellow volunteers. "What's important is that we have a desire to help as volunteers, for humanity." REUTERS/Willy Kurniawan SEARCH "VOLUNTEER UNDERTAKER" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES TPX IMAGES OF THE DAY 

Nirma Devi, 31, and Phula Devi, 30, hold boxes containing COVISHIELD vaccines as they pose for a picture at Malana village in Kullu district in the Himalayan state of Himachal Pradesh, India, September 14, 2021. Despite the hostile terrain, the northern state of Himachal Pradesh became the first in India to administer at least one COVID-19 vaccine dose in all its adults. The steep topography was a challenge overcome by health workers walking for hours or days to reach remote villages. REUTERS/Adnan Abidi SEARCH "REMOTE VILLAGERS VACCINE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY 

A healthcare worker is pictured at a swabbing station during the coronavirus disease (COVID-19) outbreak in Singapore January 25, 2021. REUTERS/Edgar Su TPX IMAGES OF THE DAY 

A patient suffering from mental illness, treated by the Jamrud Biru foundation, reacts as he receives a dose of the vaccine against the coronavirus disease (COVID-19) during a vaccination program in Bekasi, on the outskirts of Jakarta, Indonesia, August 4, 2021. REUTERS/Ajeng Dinar Ulfiana TPX IMAGES OF THE DAY 

An aerial view of a barricade of burned cars and debris on a round-about blocking the traffic on highway N1 after violent demonstrations which broke out over COVID-19 protocols, in Petit-Bourg, Guadeloupe, November 23, 2021. REUTERS/Ricardo Arduengo TPX IMAGES OF THE DAY 

Penny Parkin, 69, who was exposed to COVID-19 on March 23, 2020, takes her daily afternoon nap while her husband, John Parkin, 85, reads the newspaper, in Doylestown, Pennsylvania, U.S., March 17, 2021. When I tell my husband that I’m really tired he says to stop what you’re doing and just lie down.” said Parkin as she continues to suffer from long term effects of the coronavirus disease. REUTERS/Hannah Beier TPX IMAGES OF THE DAY 

A paramedic aboard an ambulance holds a white balloon during a tribute for nurse Hortencia Collazo, who died of the coronavirus disease (COVID-19), outside the hospital where she worked in Ciudad Juarez, Mexico January 17, 2021. REUTERS/Jose Luis Gonzalez TPX IMAGES OF THE DAY 

Five year-old Milo from Chula Vista, California, receives the Pfizer-BioNTech coronavirus vaccine at Rady's Children's hospital vaccination clinic in San Diego, California, U.S., November 3, 2021. REUTERS/Mike Blake TPX IMAGES OF THE DAY 

People take part in a screaming session as they seek emotional release from coronavirus disease (COVID-19) confinements, in an open area near Ra'anana, Israel February 7, 2021. Picture taken February 7, 2021. REUTERS/Amir Cohen 

Funeral coordinator Eddie Martinez pauses before moving some caskets at the Hollywood Forever cemetery as it struggles to keep up with demand during the outbreak of coronavirus disease (COVID-19) in Los Angeles, California, U.S., March 3, 2021. Picture taken March 3, 2021. REUTERS/Mike Blake TPX IMAGES OF THE DAY 

Performers react as they watch a pop up Broadway performance in anticipation of Broadway reopening in Times Square amid the coronavirus disease (COVID-19) pandemic in the Manhattan borough of New York City, New York, U.S., March 12, 2021. REUTERS/Carlo Allegri TPX IMAGES OF THE DAY 

Madrid Emergency Service (SUMMA) UVI-3 unit's Dr Navid Behzadi Koochani treats a patient inside his home during the coronavirus disease (COVID-19) outbreak in Madrid, Spain, March 2, 2021. "These are situations that affect you emotionally... You're there the next day thinking over how fragile life really is and, on the other hand, how lucky we are to be alive," said Behzadi. REUTERS/Juan Medina SEARCH "MEDINA AMBULANCE " FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES TPX IMAGES OF THE DAY 

Antonio Cervantes brings gifts to the grave of his wife Gabriela, who died of the coronavirus disease (COVID-19), for Valentine's Day, at a cemetery in Santa Teresa, New Mexico, U.S., February 14, 2021. REUTERS/Jose Luis Gonzalez 

Nicky Clough visits her mother Pam Harrison in her bedroom at Alexander House Care Home for the first time since the coronavirus disease (COVID-19) lockdown restrictions begin to ease, in London, Britain March 8, 2021. REUTERS/Hannah Mckay TPX IMAGES OF THE DAY 

New York City Fire Department (FDNY) union members, municipal workers and others demonstrate during a protest against the city's COVID-19 vaccine mandates on Manhattan's Upper East Side in New York City, New York, U.S., October 28, 2021. REUTERS/Mike Segar TPX IMAGES OF THE DAY 

A woman cries during the cremation of her husband, who died from the coronavirus disease (COVID-19), at a crematorium in New Delhi, India May 5, 2021. REUTERS/Adnan Abidi TPX IMAGES OF THE DAY 

Bianca Toniolo, 3, smiles as she has a video call with her mother Chiara Zuddas, 32, who is self-isolating in a bedroom after having contact with someone with coronavirus disease (COVID-19), in this picture taken by Bianca's father who is also in quarantine at home with his family in San Fiorano, Italy, February 9, 2021. Picture taken February 9, 2021. REUTERS/Marzio Toniolo TPX IMAGES OF THE DAY 

Zaquiel Augusto da Silva, 82, waits for Sinovac's CoronaVac coronavirus disease vaccine in his room, as healthcare workers administer the vaccine to the elderly who cannot leave home, in the Rocinha slum in Rio de Janeiro, Brazil February 12, 2021. REUTERS/Pilar Olivares TPX IMAGES OF THE DAY 

Jill and Stephen Brownbill react as they meet their newly borne grandson Rocco while arriving at John F. Kennedy International Airport as the U.S. reopens land borders to coronavirus disease (COVID-19) vaccinated travellers for the first time since the COVID-19 restrictions were imposed, in New York, U.S., November 8, 2021. REUTERS/Carlos Barria TPX IMAGES OF THE DAY 

Aanchal Sharma cries over the body of her husband, who died from the coronavirus disease (COVID-19), inside an ambulance at a crematorium ground in New Delhi, India, April 30, 2021. REUTERS/Adnan Abidi TPX IMAGES OF THE DAY 

A worker wearing Personal Protective Equipment (PPE) rests while preparing a grave at a burial area provided by the government for coronavirus disease (COVID-19) victims as the case surges, in Bekasi, on the outskirts of Jakarta, Indonesia, July 15, 2021. REUTERS/Willy Kurniawan TPX IMAGES OF THE DAY 

A nursing home resident receives a dose of Sinovac's CoronaVac coronavirus disease (COVID-19) vaccine as Chile starts to vaccinate elderly people living in nursing homes in Santiago, Chile, February 4, 2021. Picture taken February 4, 2021. REUTERS/Ivan Alvarado TPX IMAGES OF THE DAY 

A health worker from St Thomas' hospital stands behind a wall being painted in hearts as a memorial to all those who have died so far in the UK from COVID-19, amid the spread of the coronavirus disease pandemic in London, Britain, March 29, 2021. REUTERS/Toby Melville TPX IMAGES OF THE DAY 

A patient suffering from the coronavirus disease (COVID-19) breathes with a non-rebreather mask in an isolation room at a hospital in Bogor, Indonesia January 26, 2021. REUTERS/Willy Kurniawan/File Photo TPX IMAGES OF THE DAY SEARCH "GLOBAL POY" FOR THIS STORY. SEARCH "REUTERS POY" FOR ALL BEST OF 2021 PACKAGES.