Hong Kong Chief Executive Carrie Lam and other Chinese officials applaud as Chinese President Xi Jinping arrives for the opening session of the National People's Congress (NPC) at the Great Hall of the People in Beijing, China March 5, 2021. REUTERS/Carlos Garcia Rawlins

Hong Kong Chief Executive Carrie Lam applauds as Chinese President Xi Jinping arrives for the opening session of the National People's Congress (NPC) at the Great Hall of the People in Beijing, China March 5, 2021. REUTERS/Carlos Garcia Rawlins

Cricket - Fourth Test - Narendra Modi Stadium, Ahmedabad, India - March 5, 2021. England's captain Joe Root throws the ball. REUTERS/Amit Dave

A man wearing a protective mask receives a dose of China's Sinovac Biotech vaccine for the coronavirus disease (COVID-19) at a drive-thru vaccination station, during the mass vaccination program for elderly people, in Jakarta, Indonesia, March 5, 2021. REUTERS/Willy Kurniawan

A healthcare worker wearing a protective mask and a face shield prepares a dose of China's Sinovac Biotech vaccine for the coronavirus disease (COVID-19) at a drive-thru vaccination station, during the mass vaccination program for elderly people, in Jakarta, Indonesia, March 5, 2021. REUTERS/Willy Kurniawan

A woman wearing a protective mask reacts as she receives a dose of China's Sinovac Biotech vaccine for the coronavirus disease (COVID-19) at a drive-thru vaccination station, during the mass vaccination program for elderly people, in Jakarta, Indonesia, March 5, 2021. REUTERS/Willy Kurniawan

The silhouette of a trumpeter, member of a musical group who performs under an overpass for money as they are not allowed to play at parties due to a measure to avoid more infections with the coronavirus disease (COVID-19), is pictured, in Monterrey, Mexico March 4, 2021. REUTERS/Daniel Becerril

A treble clef tattooed on the arm of a member of a musical group who performs under an overpass for money as they are not allowed to play at parties due to a measure to avoid more infections with the coronavirus disease (COVID-19), is pictured, in Monterrey, Mexico March 4, 2021. REUTERS/Daniel Becerril

A man wearing a protective mask receives a dose of China's Sinovac Biotech vaccine for the coronavirus disease (COVID-19) at a drive-thru vaccination station, during the mass vaccination program for elderly people, in Jakarta, Indonesia, March 5, 2021. REUTERS/Willy Kurniawan

A healthcare worker prepares a dose of China's Sinovac Biotech vaccine for the coronavirus disease (COVID-19) at a drive-thru vaccination station, during the mass vaccination program for elderly people, in Jakarta, Indonesia, March 5, 2021. REUTERS/Willy Kurniawan

A health care worker wearing a protective mask and a face shield prepares a dose of China's Sinovac Biotech vaccine for the coronavirus disease (COVID-19) at a drive-thru vaccination station, during the mass vaccination program for elderly people, in Jakarta, Indonesia, March 5, 2021. REUTERS/Willy Kurniawan

Cricket - Fourth Test - Narendra Modi Stadium, Ahmedabad, India - March 5, 2021. India's Cheteshwar Pujara and Rohit Sharma run between the wickets past England's James Anderson. REUTERS/Amit Dave

Cricket - Fourth Test - Narendra Modi Stadium, Ahmedabad, India - March 5, 2021. India's Cheteshwar Pujara plays a shot. REUTERS/Amit Dave

A member of a musical group who performs under an overpass for money as they are not allowed to play at parties due to a measure to avoid more infections with the coronavirus disease (COVID-19), holds a placard reading "Cooperation for musicians", in Monterrey, Mexico March 4, 2021. REUTERS/Daniel Becerril

George Floyd Square, the site where George Floyd was killed, is pictured in the days leading up to the trial of former police Derek Chauvin, who is facing murder charges in his death, in Minneapolis, Minnesota, U.S., March 4, 2021. REUTERS/Nicholas Pfosi

Increased security measures are taken at the Hennepin County Government Center and surround area ahead of the trial of former police Derek Chauvin, who is facing murder charges in the death of George Floyd, in Minneapolis, Minnesota, U.S., March 4, 2021. REUTERS/Nicholas Pfosi

Increased security measures are taken at the Hennepin County Government Center and surround area ahead of the trial of former police Derek Chauvin, who is facing murder charges in the death of George Floyd, in Minneapolis, Minnesota, U.S., March 4, 2021. REUTERS/Nicholas Pfosi

A person wearing a protective mask sits inside a car during a medical screening before receiving a dose of China's Sinovac Biotech vaccine for the coronavirus disease (COVID-19) at a drive-thru vaccination station, during the mass vaccination program for elderly people, in Jakarta, Indonesia, March 5, 2021. REUTERS/Willy Kurniawan

A man wearing a protective mask receives a dose of China's Sinovac Biotech vaccine for the coronavirus disease (COVID-19) at a drive-thru vaccination station, during the mass vaccination program for elderly people, in Jakarta, Indonesia, March 5, 2021. REUTERS/Willy Kurniawan

A man wearing a protective mask receives a dose of China's Sinovac Biotech vaccine for the coronavirus disease (COVID-19) at a drive-thru vaccination station, during the mass vaccination program for elderly people, in Jakarta, Indonesia, March 5, 2021. REUTERS/Willy Kurniawan

Healthcare workers serve people queuing up in their vehicles to receive a dose of China's Sinovac Biotech vaccine for the coronavirus disease (COVID-19) at a drive-thru vaccination station, during the mass vaccination program for elderly people, in Jakarta, Indonesia, March 5, 2021. REUTERS/Willy Kurniawan

Increased security measures are taken at the Hennepin County Government Center and surround area ahead of the trial of former police Derek Chauvin, who is facing murder charges in the death of George Floyd, in Minneapolis, Minnesota, U.S., March 4, 2021. REUTERS/Nicholas Pfosi

Increased security measures are taken at the Hennepin County Government Center and surround area ahead of the trial of former police Derek Chauvin, who is facing murder charges in the death of George Floyd, in Minneapolis, Minnesota, U.S., March 4, 2021. REUTERS/Nicholas Pfosi

Increased security measures are taken at the Hennepin County Government Center and surround area ahead of the trial of former police Derek Chauvin, who is facing murder charges in the death of George Floyd, in Minneapolis, Minnesota, U.S., March 4, 2021. REUTERS/Nicholas Pfosi

Increased security measures are taken at the Hennepin County Government Center and surround area ahead of the trial of former police Derek Chauvin, who is facing murder charges in the death of George Floyd, in Minneapolis, Minnesota, U.S., March 4, 2021. REUTERS/Nicholas Pfosi

Members of a musical group perform under an overpass for money as they are not allowed to play at parties due to a measure to avoid more infections with the coronavirus disease (COVID-19), in Monterrey, Mexico March 4, 2021. REUTERS/Daniel Becerril

George Floyd Square, the site where George Floyd was killed, is pictured in the days leading up to the trial of former police Derek Chauvin, who is facing murder charges in his death, in Minneapolis, Minnesota, U.S., March 4, 2021. REUTERS/Nicholas Pfosi

The "People's Way" at George Floyd Square, the site where George Floyd was killed, in the days leading up to the trial of former police Derek Chauvin, who is facing murder charges in his death, in Minneapolis, Minnesota, U.S., March 4, 2021. REUTERS/Nicholas Pfosi

Members of a musical group perform under an overpass for money as they are not allowed to play at parties due to a measure to avoid more infections with the coronavirus disease (COVID-19), in Monterrey, Mexico March 4, 2021. REUTERS/Daniel Becerril

The "People's Way" at George Floyd Square, the site where George Floyd was killed, in the days leading up to the trial of former police Derek Chauvin, who is facing murder charges in his death, in Minneapolis, Minnesota, U.S., March 4, 2021. REUTERS/Nicholas Pfosi

Members of a musical group perform under an overpass for money as they are not allowed to play at parties due to a measure to avoid more infections with the coronavirus disease (COVID-19), in Monterrey, Mexico March 4, 2021. REUTERS/Daniel Becerril

The Say Their Names cemetery George Floyd Square in the days leading up to the trial of former police Derek Chauvin, who is facing murder charges in the death of George Floyd, in Minneapolis, Minnesota, U.S., March 4, 2021. REUTERS/Nicholas Pfosi

A Caterpillar (Cat) Excavators is seen working at a construction site near the New York Harbor in Brooklyn, New York, U.S., March 4, 2021. REUTERS/Brendan McDermid

A TV screen showing news over the opening session of the National People's Congress (NPC), is seen in Hong Kong, China March 5, 2021. REUTERS/Tyrone Siu

George Floyd Square, the site where George Floyd was killed, in the days leading up to the trial of former police Derek Chauvin, who is facing murder charges in his death, in Minneapolis, Minnesota, U.S., March 4, 2021. Picture taken through abroken glass door. REUTERS/Nicholas Pfosi

Increased security measures are taken at the Hennepin County Government Center and surround area ahead of the trial of former police Derek Chauvin, who is facing murder charges in the death of George Floyd, in Minneapolis, Minnesota, U.S., March 4, 2021. REUTERS/Nicholas Pfosi

A member of the Mexican National Guard patrols on the banks of the Rio Bravo river as he tries to control the influx of migrants crossing toward the U.S., in Ciudad Juarez, Mexico March 4, 2021. REUTERS/Jose Luis Gonzalez

One World Trade Center and the lower Manhattan skyline is seen behind a construction site near the New York Harbor in Brooklyn, New York, U.S., March 4, 2021. REUTERS/Brendan McDermid

The Statue of Liberty is seen at sunset in New York Harbor from Brooklyn, New York, U.S., March 4, 2021. REUTERS/Brendan McDermid

The Statue of Liberty is seen at sunset in New York Harbor from Brooklyn, New York, U.S., March 4, 2021. REUTERS/Brendan McDermid

One World Trade Center and the lower Manhattan skyline is seen behind a construction site near the New York Harbor in Brooklyn, New York, U.S., March 4, 2021. REUTERS/Brendan McDermid

The Statue of Liberty is seen at sunset in New York Harbor from Brooklyn, New York, U.S., March 4, 2021. REUTERS/Brendan McDermid

Migrants are seen along the banks of the Rio Bravo river after crossing it to turn themselves in to U.S. Border Patrol agents to request for asylum in El Paso, Texas, U.S., while a member of the Mexican National Guard patrols the border, in Ciudad Juarez, Mexico March 4, 2021. REUTERS/Jose Luis Gonzalez

Migrants are seen after crossing the Rio Bravo river to turn themselves in to U.S. Border Patrol agents to request for asylum in El Paso, Texas, U.S., as seen from Ciudad Juarez, Mexico March 4, 2021. REUTERS/Jose Luis Gonzalez

The Statue of Liberty is seen at sunset in New York Harbor from Brooklyn, New York, U.S., March 4, 2021. REUTERS/Brendan McDermid

Billy Brigs, a neighborhood resident and evening caretaker at the George Floyd Square tends to the site where George Floyd was killed, in the days leading up to the trial of former police Derek Chauvin, who is facing murder charges in his death, in Minneapolis, Minnesota, U.S., March 4, 2021. REUTERS/Nicholas Pfosi

A TV screen showing news over the opening session of the National People's Congress (NPC), is seen in Hong Kong, China March 5, 2021. REUTERS/Tyrone Siu

Migrants are seen after crossing the Rio Bravo river to turn themselves in to U.S. Border Patrol agents to request for asylum in El Paso, Texas, U.S., as seen from Ciudad Juarez, Mexico March 4, 2021. REUTERS/Jose Luis Gonzalez

Migrants cross the Rio Bravo river to turn themselves in to U.S Border Patrol agents to request for asylum in El Paso, Texas, U.S., as seen from Ciudad Juarez, Mexico March 4, 2021. REUTERS/Jose Luis Gonzalez

A TV screen showing news over the opening session of the National People's Congress (NPC), is seen in Hong Kong, China March 5, 2021. REUTERS/Tyrone Siu

Migrants cross the Rio Bravo river to turn themselves in to U.S Border Patrol agents to request for asylum in El Paso, Texas, U.S., as seen from Ciudad Juarez, Mexico March 4, 2021. REUTERS/Jose Luis Gonzalez

Chinese President Xi Jinping and Premier Li Keqiang sing the national anthem at the opening session of the National People's Congress (NPC) at the Great Hall of the People in Beijing, China March 5, 2021. REUTERS/Carlos Garcia Rawlins

Chinese Premier Li Keqiang speaks at the opening session of the National People's Congress (NPC) at the Great Hall of the People in Beijing, China March 5, 2021. REUTERS/Carlos Garcia Rawlins

Hong Kong Chief Executive Carrie Lam and other Chinese officials applaud as Chinese President Xi Jinping arrives for the opening session of the National People's Congress (NPC) at the Great Hall of the People in Beijing, China March 5, 2021. REUTERS/Carlos Garcia Rawlins

A delegate in ethnic minority costume stands outside the Great Hall of the People after the opening session of the National People's Congress (NPC) in Beijing, China March 5, 2021. REUTERS/Carlos Garcia Rawlins

A delegate in ethnic minority costume walks past buses on Tiananmen Square after the opening session of the National People's Congress (NPC) at the Great Hall of the People, on a polluted day in Beijing, China March 5, 2021. REUTERS/Carlos Garcia Rawlins

A police officer keeps watch on Tiananmen Square after the opening session of the National People's Congress (NPC) at the Great Hall of the People, on a polluted day in Beijing, China March 5, 2021. REUTERS/Carlos Garcia Rawlins

A syringe with a dose of the vaccine against the coronavirus disease (COVID-19) is displayed at the Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital in Tokyo, Japan March 5, 2021. Yoshikazu Tsuno/Pool via REUTERS

Medical staffs prepare syringes with doses of the vaccine against the coronavirus disease (COVID-19) at the Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital in Tokyo, Japan March 5, 2021. Yoshikazu Tsuno/Pool via REUTERS

Medical workers rest after they received doses of the vaccine against the coronavirus disease (COVID-19) at the Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital in Tokyo, Japan March 5, 2021. Yoshikazu Tsuno/Pool via REUTERS

A medical worker rests in a relaxation room inside a pavilion of the Exhibition of Achievements of National Economy (VDNH), which was converted into a temporary hospital for people suffering from the coronavirus disease (COVID-19), in Moscow, Russia November 17, 2020. Picture taken November 17, 2020. REUTERS/Maxim Shemetov TPX IMAGES OF THE DAY

A healthcare worker reads a patient’s chart as healthcare personnel treat people with the coronavirus disease (COVID-19) at a hospital in Lakin, Kansas, U.S., November 19, 2020. Picture taken November 19, 2020. REUTERS/Callaghan O'Hare

Hashim, an essential worker in the healthcare industry, greets his daughter through the closed door as he maintains social distance from his family as he works amid the coronavirus disease (COVID-19) outbreak in New Rochelle, New York, U.S., April 11, 2020. Picture taken April 11, 2020. REUTERS/Joy Malone TPX IMAGES OF THE DAY REFILE - CORRECTING STATE

Health workers wearing protective face masks hold flowers in front of crosses as they pay a tribute for their co-worker Maria dos Santos, a nurse, who died of the coronavirus disease, amid COVID-19 outbreak, outside the Dr. Jose Soares Hungria Hospital in Sao Paulo, Brazil, April 23, 2020. REUTERS/Amanda Perobelli TPX IMAGES OF THE DAY

Turin's Red Cross volunteer rests at their headquarters on Easter Sunday as the spread of the coronavirus disease (COVID-19) continues, in Turin, Italy, April 12, 2020. REUTERS/Massimo Pinca TPX IMAGES OF THE DAY

A health worker in personal protective equipment (PPE) takes a break while waiting for people to collect samples to conduct tests for the coronavirus disease (COVID-19), amid the spread of the disease, in New Delhi, India July 10, 2020. REUTERS/Danish Siddiqui TPX IMAGES OF THE DAY

Britta Brennan, emergency nurse, and Arvind Suguness, MD, Pulmonary, Sleep, and Critical Care, pose for a portrait in Washington, U.S., April 24, 2020. Picture taken April 24, 2020. REUTERS/Leah Millis TPX IMAGES OF THE DAY

Physician Assistant Cori Kostick demonstrates the Brigham B-PROTECTED testing booth used to administer tests for the coronavirus disease (COVID-19) at the Brigham and Women Hospital's community testing site in Boston, Massachusetts, U.S., May 5, 2020. REUTERS/Brian Snyder TPX IMAGES OF THE DAY

Overheated, a healthcare worker takes a break as people wait in their vehicles in long lines for the coronavirus disease (COVID-19) testing in Houston, Texas, U.S., July 7, 2020. REUTERS/Callaghan O'Hare TPX IMAGES OF THE DAY

Health workers wearing protective face masks react during a tribute for their co-worker Esteban, a male nurse who died of the coronavirus disease, amid the coronavirus disease (COVID-19) outbreak, outside the Severo Ochoa Hospital in Leganes, Spain, April 13, 2020. REUTERS/Susana Vera TPX IMAGES OF THE DAY

Dr. Joseph Varon, 58, the chief medical officer at United Memorial Medical Center, hugs Christina Mathers, 43, a nurse from his team who became infected with COVID-19, at United Memorial Medical Center (UMMC), during the coronavirus disease (COVID-19) outbreak, in Houston, Texas, U.S., July 25, 2020. Mathers was told she tested positive for COVID-19 after she reported feeling ill during one of her shifts. "That's the hardest thing to ever hear... It messes with you," said Mathers, who has been working every other day since April 29. "But I wouldn't go anywhere else but here." REUTERS/Callaghan O'Hare TPX IMAGES OF THE DAY SEARCH "COVID-19 HOUSTON VARON" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY

A health worker rests before the burial of a woman who died due to the coronavirus disease (COVID-19), at a graveyard, in New Delhi, India, August 7, 2020. REUTERS/Adnan Abidi TPX IMAGES OF THE DAY

A health care worker reacts after receiving the Pfizer-BioNTech COVID-19 vaccine as the country begins vaccinations against coronavirus disease, at the Hospital Favoriten in Vienna, Austria December 27, 2020. REUTERS/Lisi Niesner TPX IMAGES OF THE DAY

Nurse Cristina Cadenas, 53, adjusts a plaster on her nose after taking off full personal protective equipment (PPE) during her shift at Principe de Asturias hospital, amid the coronavirus disease (COVID-19) outbreak, in Alcala de Henares, Spain, April 30, 2020. Picture taken on April 30, 2020. REUTERS/Sergio Perez

Intensive Care Unit Nurse Merlin Pambuan, 66, is cheered by hospital staff as she walks out of the hospital where she spent 8 months with the coronavirus disease (COVID-19), at Dignity Health – St. Mary Medical Center, in Long Beach, California, U.S., December 21, 2020. REUTERS/Lucy Nicholson TPX IMAGES OF THE DAY

Mairi Breen Rothman, CNM, DM. Certified Nurse-Midwife. Director, M.A.M.A.S., Inc. poses for a portrait in Takoma Park, U.S., May 17, 2020. Picture taken May 17, 2020. REUTERS/Leah Millis

Dr. Eileen Sprys, front, and registered nurse Mary Bond, hug each other at Medical Arts Hospital in Lamesa, Texas, U.S., December 17, 2020. Picture taken December 17, 2020. REUTERS/Go Nakamura

Indian Navy's Chetak helicopter shower flower petals in the premises of a hospital as part of an event to show gratitude towards the frontline warriors fighting the coronavirus disease (COVID-19) outbreak, in Visakhapatnam, India, May 3, 2020. REUTERS/R Narendra TPX IMAGES OF THE DAY

Belgian doctor Antoine Sassine, urologist at Chirec Delta Hospital, who survived the coronavirus disease (COVID-19) after 6 weeks in the intensive care unit and 3.5 weeks in a coma embraces his wife Alexandra as he leaves the hospital in Brussels, Belgium, April 19, 2020. REUTERS/Yves Herman TPX IMAGES OF THE DAY

Medical workers hug each other outside the emergency rooms at Severo Ochoa Hospital during the coronavirus disease (COVID-19) outbreak in Leganes, Spain, March 26, 2020. REUTERS/Susana Vera TPX IMAGES OF THE DAY

Jonathan Edward and other sanitation workers strike for a second week as they demand higher pay and ask for more protections from Metro Service Group in New Orleans, Louisiana, U.S., May 13, 2020. REUTERS/Kathleen Flynn TPX IMAGES OF THE DAY

A nurse wipes away tears as she stands outside NYU Langone Medical Center on 1st Avenue in Manhattan as New York Police Department (NYPD) Mounted Police and other units came to cheer and thank healthcare workers at 7pm during the outbreak of the coronavirus disease (COVID-19) in New York City, New York, U.S., April 16, 2020. REUTERS/Mike Segar TPX IMAGES OF THE DAY

Iraqi doctor Haidar Ali Musa al-Hasani, internal medicine specialist, is disinfected after checking cases of the coronavirus disease (COVID-19), at Al-Hakim Hospital in the holy city of Najaf, Iraq June 19, 2020. Picture taken June 19, 2020. REUTERS/Alaa Al-Marjani

A hospital worker wearing a protective face mask rests on a cushion placed on top of pews as a funeral chapel temporarily shelters health workers from a nearby hospital taking in coronavirus disease (COVID-19) patients, in Makati City, Metro Manila, Philippines April 1, 2020. Picture taken April 1, 2020. REUTERS/Eloisa Lopez TPX IMAGES OF THE DAY

A health worker takes a break from her work at a temporary field hospital set up by Medecins Sans Frontieres (MSF) during the coronavirus disease (COVID-19) outbreak in Khayelitsha township near Cape Town, South Africa, July 21, 2020. REUTERS/Mike Hutchings

Workers wearing protective equipment transport a body in the grounds of the Central Jamia Mosque Ghamkol Sharif, a temporary morgue set up at a Mosque as the spread of the coronavirus disease (COVID-19) continues, Birmingham, Britain, April 21, 2020. REUTERS/Carl Recine TPX IMAGES OF THE DAY

Health workers rest near the NYU Langone Hospital, during the outbreak of the coronavirus disease (COVID-19) in the Manhattan borough of New York City, New York, U.S., May 3, 2020. REUTERS/Eduardo Munoz TPX IMAGES OF THE DAY

Volunteer Leonid Krasner wearing a painted protective suit stands next to a patient in the City Clinical Hospital No. 52 treating COVID-19 patients in Moscow, Russia December 16, 2020. Leonid Krasner, aged 59, draws cheerful pictures on his personal protective equipment (PPE) and wears such suits and masks in the red zone of a Moscow hospital while taking care of people suffering from the coronavirus disease to support and cheer them up during this challenging time. Picture taken December 16, 2020. REUTERS/Maxim Shemetov

Ambulance crew members from the South Central Ambulance Service chat in the break room of an ambulance resource centre, in Portsmouth, Britain May 5, 2020. Picture taken May 5, 2020. Leon Neal/Pool via REUTERS

Soldiers stand as they observe a two-minute silence as part of Armistice Day remembrance commemoration, at a coronavirus disease (COVID-19) testing centre in Liverpool, Britain November 11, 2020. REUTERS/Carl Recine TPX IMAGES OF THE DAY

A technician hangs N95 face masks to be sterilized with UVC light, amid the coronavirus disease (COVID-19) outbreak, at the Cleveland Clinic hospital in Abu Dhabi, United Arab Emirates, April 20, 2020. REUTERS/Christopher Pike TPX IMAGES OF THE DAY

A cemetery worker is disinfected after the funeral of a woman, who died of the coronavirus disease (COVID-19), at the Santa Tecla cemetery, as the coronavirus disease (COVID-19) outbreak continues, in Santa Tecla, El Salvador June 24, 2020. REUTERS/Jose Cabezas TPX IMAGES OF THE DAY

Jenny Adames, 36, a Funeral Service Coordinator at International Funeral & Cremation Services, a funeral home in Harlem, speaks on her phone that features an image of her daughter who is currently in quarantine at her grandmother's house, as Adames works during the coronavirus disease (COVID-19) outbreak, in Manhattan, New York City, New York, U.S., April 16, 2020. Adames sent her daughter to live with her mother. She recently caught herself snapping at her in a text exchange. "Today kind of broke my heart," she said. "She needs her mom. She don't need Jenny the funeral director." REUTERS/Andrew Kelly SEARCH "CORONAVIRUS FUNERAL HOMES SLUM" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Physician Alister Martin receives one of the first doses of the Pfizer-BioNTech coronavirus disease (COVID-19) vaccine from RN Jennifer Lisciotti at Massachusetts General Hospital in Boston, Massachusetts, U.S., December 16, 2020. Craig F. Walker/Pool via REUTERS 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

Medical teams celebrate before receiving coronavirus disease (COVID-19) vaccines as Israel kicks off a coronavirus vaccination drive, at Tel Aviv Sourasky Medical Center (Ichilov Hospital) in Tel Aviv, Israel December 20, 2020. REUTERS/Ronen Zvulun TPX IMAGES OF THE DAY

A hospital staffer works at a coronavirus disease (COVID-19) ward amid a surge in new cases that has forced Israel into a second nationwide lockdown, at Tel Aviv Sourasky Medical Center (Ichilov), Tel Aviv, Israel September 21, 2020. Picture taken September 21, 2020. REUTERS/Ronen Zvulun

Alberta Tapia hospital cleaning staff in COVID-19 units poses for a portrait in Tysons Corner, Virginia April 24, 2020. Picture taken April 24, 2020. REUTERS/Leah Millis

Vanderlecia Ortega dos Santos, 32, a nurse from the Witoto tribe, an indigenous ethnic group, who has volunteered to provide the only frontline care protecting her indigenous community of 700 families from the COVID-19 outbreak, wears a face mask that reads "Indigenous lives matter" as she puts on personal protective equipment (PPE), before leaving her home in Parque das Trios, during the coronavirus disease (COVID-19) outbreak, in the Taruma district, Manaus, Brazil, April 26, 2020. "Our people are dying from this disease here and they are not being recognized as indigenous people by the state and Sesai," said Santos. REUTERS/Bruno Kelly SEARCH "CORONAVIRUS INDIGENOUS NURSE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY

Evelia De La Cruz, a hospital housekeeper at Roseland Community Hospital, disinfects the room where a coronavirus disease (COVID-19) positive patient died in the intensive care unit on the South Side of Chicago, Illinois, U.S. December 1, 2020. Picture taken December 1, 2020. REUTERS/Shannon Stapleton TPX IMAGES OF THE DAY

A medical worker in a protective suit works inside an intensive care unit for the coronavirus disease (COVID-19) patients, at the San Filippo Neri hospital, ahead of Christmas, in Rome, Italy, December 22, 2020. REUTERS/Yara Nardi

Doctor Luciana Souza compares two different chest x-rays of a patient as she talks to a colleague at a field hospital set up to treat patients suffering from the coronavirus disease (COVID-19) in Guarulhos, Sao Paulo state, Brazil, May 12, 2020. REUTERS/Amanda Perobelli

A gravedigger rests during the outbreak of the coronavirus disease (COVID-19), at Sao Francisco Xavier cemetery in Rio de Janeiro. Brazil, April 13, 2020. Picture taken April 13, 2020. REUTERS/Ian Cheibub TPX IMAGES OF THE DAY

A health worker reacts before the burial of a Central Reserve Police Force (CRPF) officer who was died of complications related to COVID-19, during the coronavirus disease (COVID-19) outbreak, at a graveyard in New Delhi, India, April 29, 2020. REUTERS/Danish Siddiqui/File Photo TPX IMAGES OF THE DAY SEARCH "GLOBAL COVID-19" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Nurse Elena Betti reacts after receiving the Pfizer-BioNTech COVID-19 vaccine against the coronavirus disease at the Careggi hospital in Florence, Italy, December 27, 2020. REUTERS/Jennifer Lorenzini TPX IMAGES OF THE DAY

Jane Cristina Dias Alves, 43, a nurse, a volunteer in COVID-19 vaccine trial for AstraZeneca, poses for a photograph in Sao Paulo, Brazil, December 11, 2020. Alves has a daughter and lives with the parents and with the grandmother. "Two nurses on my team, who are close to me and we talk every day, had COVID-19 and were hospitalized here in the ICU. It was something that moved us all. That influenced my decision – both the fear and also the conviction to join the trial. It strengthened my desire to take part in the trial. To know how much we can make the difference. Having a colleague next to you ill with the virus, taking care of him, knowing he can get worse and even lose his life – that moves something inside you," she said. "People look at me and say, 'Really, you are a volunteer? But you are so young. Isn't that risky?' And I try to put them at ease. We can also be an inspiration to people. To do this, to be a volunteer, it's important to understand your role in society." Picture taken with a slow shutter speed. REUTERS/Amanda Perobelli SEARCH "PEROBELLI VACCINE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY

Medical staff, wearing protective suits and face masks, work at the intensive care unit for coronavirus disease (COVID-19) patients at Ambroise Pare clinic in Neuilly-sur-Seine near Paris, as the spread of the coronavirus disease continues in France, April 1, 2020. REUTERS/Benoit Tessier TPX IMAGES OF THE DAY

A healthcare worker takes a break outside the emergency center at Maimonides Medical Center during the outbreak of the coronavirus disease (COVID-19) in the Brooklyn borough of New York, U.S., April 13, 2020. REUTERS/Andrew Kelly

Nogales Hospital doctor Javier Martinez eats outside his home while his family observes him, before returning to work, as he practices social distancing in order to prevent his family from getting infected with the coronavirus disease, after the Mexican government declared a health emergency and issued stricter regulations to contain the spread of the coronavirus disease (COVID-19), in Ciudad Juarez, Mexico April 25, 2020. Picture taken April 25, 2020. REUTERS/Jose Luis Gonzalez TPX IMAGES OF THE DAY

NHS workers react at the Aintree University Hospital during the Clap for our Carers campaign in support of the NHS, following the outbreak of the coronavirus disease (COVID-19), Liverpool, Britain, May 21, 2020. REUTERS/Phil Noble TPX IMAGES OF THE DAY

Alisha Narvaez, 36, the manager at International Funeral & Cremation Services, a funeral home in Harlem, poses for a photo in her personal protective equipment, before embalming a deceased person, during the coronavirus disease (COVID-19) outbreak, in Manhattan, New York City, New York, U.S., April 9, 2020. At the beginning of the pandemic, Narvaez sent her 17-year-old daughter to live with her twin sister, but after two weeks the distance was too much. "It's always just been me and her and she wanted to come home," said Narvaez. "I gotta make sure I keep healthy just not to harm her," she added. "Although she's been in quarantine for several weeks, every day I come home from work is Day Zero for her." REUTERS/Andrew Kelly SEARCH "CORONAVIRUS FUNERAL HOMES SLUM" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY.

Nurses Sasha Dubois and Farah Fevrin kneel for the 8 minutes and 46 seconds of silence during a vigil at Brigham and Women’s Hospital, where many coronavirus disease (COVID-19) patients have been treated, against the death in Minneapolis police custody of George Floyd, in Boston, Massachusetts, U.S., June 5, 2020. REUTERS/Brian Snyder TPX IMAGES OF THE DAY

A member of the Popular Mobilization Forces (PMF), who volunteered to work in a cemetery, wears a protective suit, as he burns clothes they used for burial, near the new Wadi Al-Salam cemetery, which is dedicated to those who died of the coronavirus disease (COVID-19), on the outskirts of the holy city of Najaf, Iraq May 25, 2020. Picture taken May 25, 2020. REUTERS/Alaa al-Marjani TPX IMAGES OF THE DAY

Julia Trainor, 23, a registered nurse who is caring for COVID-19 patients at a surgical intensive care unit (ICU), poses for a photograph after a 14-hour shift, outside the hospital where she works, during the coronavirus disease (COVID-19) outbreak, Maryland, U.S., April 8, 2020. "The hardest moment was having to put a breathing tube in my patient who could no longer breathe for herself and after the breathing tube went in, we called her family and the husband, of course, couldn't visit her because of visitor restrictions at the hospital. So I had to put him on the phone and hold the phone to her ear, as he told her that he loved her so much and then I had to wipe away her tears as she was crying," said Trainor. "I'm used to seeing very sick patients and I'm used to patients dying but nothing quite like this. In the flip of a switch, without the support, they're completely isolated. They're very sick. Some of them recover and some of them don't. But the hardest part, I would think, is them having to go through this feeling like they are alone." REUTERS/Rosem Morton SEARCH "MARYLAND COVID-19 HEALTH WORKERS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Tracey Wilson, 53, a nurse practitioner who is caring for COVID-19 patients in an intensive care unit (ICU), poses for a photograph after a 12-hour shift, outside the hospital where she works, during the coronavirus disease (COVID-19) outbreak, Maryland, U.S., April 3, 2020. "I had a patient fall out of bed today and I had to call his wife and tell her and she couldn't come see him, even though she pleaded and begged to come see him," Wilson said. "There is a lot of unknowns and with that unknown is a lot of anxiety and stress that we're not used to dealing with." REUTERS/Rosem Morton SEARCH "MARYLAND COVID-19 HEALTH WORKERS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.