A patient suffering from the coronavirus disease (COVID-19) receives medical treatment in the intensive care unit (ICU) of the City Clinical Hospital named after S.Botkin in Oryol, Russia October 26, 2021. REUTERS/Maxim Shemetov

A demonstrator holds a placard next to mock body bags during a rally demanding that pro-Russian separatists reopen checkpoints in the self-proclaimed Donetsk and Luhansk People's Republics and allow people to enter the government-controlled territory for vaccination and medical treatment amid the outbreak of the coronavirus disease (COVID-19), in front of the Russian embassy in Kyiv, Ukraine October 25, 2021. The placard reads: "Russia has made a concentration camp in Donbas". REUTERS/Valentyn Ogirenko

Demonstrators stand next to mock body bags during a rally demanding that pro-Russian separatists reopen checkpoints in the self-proclaimed Donetsk and Luhansk People's Republics and allow people to enter the government-controlled territory for vaccination and medical treatment amid the outbreak of the coronavirus disease (COVID-19), in front of the Russian embassy in Kyiv, Ukraine October 25, 2021. Placards read: "Russia kills"(R) and "Russia has made a concentration camp in Donbas". REUTERS/Valentyn Ogirenko

Mock body bags are placed by demonstrators in front of the Russian embassy during a rally demanding that pro-Russian separatists reopen checkpoints in the self-proclaimed Donetsk and Luhansk People's Republics and allow people to enter the government-controlled territory for vaccination and medical treatment amid the outbreak of the coronavirus disease (COVID-19), in Kyiv, Ukraine October 25, 2021. The placard reads: "Russia kills". REUTERS/Valentyn Ogirenko

Mock body bags are placed by demonstrators in front of the Russian embassy during a rally demanding that pro-Russian separatists reopen checkpoints in the self-proclaimed Donetsk and Luhansk People's Republics and allow people to enter the government-controlled territory for vaccination and medical treatment amid the outbreak of the coronavirus disease (COVID-19), in Kyiv, Ukraine October 25, 2021. The placard reads: "Russia kills". REUTERS/Valentyn Ogirenko

Demonstrators carry a mock body bag during a rally demanding that pro-Russian separatists reopen checkpoints in the self-proclaimed Donetsk and Luhansk People's Republics and allow people to enter the government-controlled territory for vaccination and medical treatment amid the outbreak of the coronavirus disease (COVID-19), in front of the Russian embassy in Kyiv, Ukraine October 25, 2021. The placard reads: "Russia kills". REUTERS/Valentyn Ogirenko

A patient suffering from the coronavirus disease (COVID-19) receives medical treatment in the Intensive Care Unit (ICU) of the City Clinical Hospital Number 52 in Moscow, Russia October 21, 2021. REUTERS/Maxim Shemetov

Chart showing number of people waiting for hospital treatment in England from 2015 to August 2021.

The water treatment plant on Cowessess First Nation is seen near Grayson, Saskatchewan, Canada October 19, 2021. Picture taken October 19, 2021. REUTERS/Shannon VanRaes

Ruben Aleman, veterinarian and director of the Marine Wildlife Rehabilitation Center, points at an injured turtle receiving treatment for its lungs after being caught underwater in a fishing net, in Salango, Ecuador October 12, 2021. Picture taken October 12, 2021. REUTERS/Santiago Arcos

Amare Buzayehu, 17, a civilian who was wounded during the fighting between the Ethiopian National Defense Force (ENDF) and the Tigray People's Liberation Front (TPLF) forces in Kobo town, receives treatment at the Dessie Referral Hospital in Dessie Town, Amhara region, Ethiopia, October 9, 2021. Picture taken October 9, 2021. REUTERS/Tiksa Negeri

Sahle Achawet, 11, a civilian who was wounded during the fighting between the Ethiopian National Defense Force (ENDF) and the Tigray People's Liberation Front (TPLF) forces in Kobo town, receives treatment at the Dessie Referral Hospital in Dessie Town, Amhara region, Ethiopia, October 9, 2021. Picture taken October 9, 2021. REUTERS/Tiksa Negeri

Amare Buzayehu, 17, a civilian who was wounded during the fighting between the Ethiopian National Defense Force (ENDF) and the Tigray People's Liberation Front (TPLF) forces in Kobo town, receives treatment at the Dessie Referral Hospital in Dessie Town, Amhara region, Ethiopia, October 9, 2021. Picture taken October 9, 2021. REUTERS/Tiksa Negeri

Sahle Achawet, 11, Amare Buzayehu, 17 and Adugnawu Kassa, 16 who were wounded during the fighting between the Ethiopian National Defense Force (ENDF) and the Tigray People's Liberation Front (TPLF) forces in Kobo town, receive treatment at the Dessie Referral Hospital in Dessie Town, Amhara region, Ethiopia, October 9, 2021. Picture taken October 9, 2021. REUTERS/Tiksa Negeri

A member of the Ethiopian National Defense Force (ENDF) wounded during the fighting between them and the Tigray People's Liberation Front (TPLF) forces receive treatment at the Dessie Referral Hospital in Dessie town, Amhara region, Ethiopia, October 9, 2021. Picture taken October 9, 2021. REUTERS/Tiksa Negeri

Kasaw Amare, 30, a civilian who lost one arm during the fighting between the Ethiopian National Defense Force (ENDF) and the Tigray People's Liberation Front (TPLF) forces in Kobo town, receives treatment at the Dessie Health Science College Hospital in Dessie town, Amhara region, Ethiopia, October 9, 2021. Picture taken October 9, 2021. REUTERS/Tiksa Negeri

Civilians who were wounded during the fighting between the Ethiopian National Defense Force (ENDF) and the Tigray People's Liberation Front (TPLF) forces in Kobo town, receive treatment at the Dessie Health Science College Hospital in Dessie town, Amhara region, Ethiopia, October 9, 2021. Picture taken October 9, 2021. REUTERS/Tiksa Negeri

Kassa Demeke, 60, a farmer who was wounded during the fighting between the Ethiopian National Defense Force (ENDF) and the Tigray People's Liberation Front (TPLF) forces in Kobo town, receives treatment at the Dessie Health Science College Hospital in Dessie town, Amhara region, Ethiopia, October 9, 2021. Picture taken October 9, 2021. REUTERS/Tiksa Negeri

A member of the Ethiopian National Defense Force (ENDF) who was wounded during fighting between Ethiopian National Defense Force (ENDF) and the Tigray People's Liberation Front (TPLF) forces in Kobo town, is escorted to a local cafeteria in front of the Dessie Referral Hospital where wounded civilians and militaries receive treatment, in Dessie town, Amhara Region, Ethiopia, October 9, 2021. Picture taken October 9, 2021. REUTERS/Tiksa Negeri

Civilians walk past Dessie Referral Hospital where wounded civilians and members of the Ethiopian National Defense Force (ENDF) receive treatment in Dessie town, Amhara Region, Ethiopia, October 9, 2021. Picture taken October 9, 2021. REUTERS/Tiksa Negeri

Members of the Ethiopian National Defense Force (ENDF) who were wounded during fighting between them and the Tigray People's Liberation Front (TPLF) forces in Kobo town, are seen outside the Dessie Referral Hospital where wounded civilians and militaries receive treatment, in Dessie town, Amhara Region, Ethiopia, October 9, 2021. Picture taken October 9, 2021. REUTERS/Tiksa Negeri

A member of the Ethiopian National Defense Force (ENDF) who was wounded during the fighting between them and the Tigray People's Liberation Front (TPLF) forces receive treatment at the Dessie Referral Hospital in Dessie town, Amhara Region, Ethiopia, October 9, 2021. Picture taken October 9, 2021. REUTERS/Tiksa Negeri

A migrant receives IV treatment in makeshift care area as migrants wait outside the United Nations High Commissioner for Refugees (UNHCR) negotiation office, in Tripoli, Libya, October 9, 2021. REUTERS/Hazem Ahmed

Adrian James, 2, who tested positive for the coronavirus disease (COVID-19) and is on a ventilator, receives treatment at SSM Health Cardinal Glennon Children's Hospital in St. Louis, Missouri, U.S., October 5, 2021. REUTERS/Callaghan O'Hare

Adrian James, 2, who tested positive for the coronavirus disease (COVID-19) and is on a ventilator, receives treatment at SSM Health Cardinal Glennon Children's Hospital in St. Louis, Missouri, U.S., October 5, 2021. REUTERS/Callaghan O'Hare

Doctors discuss the treatment of Adrian James, 2, who tested positive for the coronavirus disease (COVID-19), at SSM Health Cardinal Glennon Children's Hospital in St. Louis, Missouri, U.S., October 5, 2021. REUTERS/Callaghan O'Hare

Adrian James, 2, who tested positive for the coronavirus disease (COVID-19) and is on a ventilator, receives treatment at SSM Health Cardinal Glennon Children's Hospital in St. Louis, Missouri, U.S., October 5, 2021. REUTERS/Callaghan O'Hare

A healthcare worker responds to a page as a patient who tested positive for the coronavirus disease (COVID-19) receives treatment at SSM Health Cardinal Glennon Children's Hospital in St. Louis, Missouri, U.S., October 5, 2021. REUTERS/Callaghan O'Hare

Adrian James, 2, who tested positive for the coronavirus disease (COVID-19), receives treatment at SSM Health Cardinal Glennon Children's Hospital in St. Louis, Missouri, U.S., October 5, 2021. REUTERS/Callaghan O'Hare

Sachets of Nutriset, peanut-based paste for treatment of severe acute malnutrition are seen packaged at the Nutriset factory in Fort-Dauphin, southern Madagascar October 01, 2021. Picture taken October 01, 2021. REUTERS/Joel Kouam

Boxes of Nutriset, peanut-based paste for treatment of severe acute malnutrition are seen packaged at the Nutriset factory in Fort-Dauphin, southern Madagascar October 01, 2021. Picture taken October 01, 2021. REUTERS/Joel Kouam

Students and professionals from Hong Kong protest in Taiwan on China’s national day, hoping to draw attention to topics like the treatment of Uyghur Muslims in Xinjiang and calling for a boycott of the Winter Olympic Games to be held in Beijing next year in Taipei, Taiwan, October 1, 2021. REUTERS/Ann Wang

Students and professionals from Hong Kong protest in Taiwan on China?s national day, hoping to draw attention to topics like the treatment of Uyghur Muslims in Xinjiang and calling for a boycott of the Winter Olympic Games to be held in Beijing next year in Taipei, Taiwan, October 1, 2021. REUTERS/Ann Wang

Machinery is seen at a factory specialising in heat treatment on metals, which is out of operation, at an industrial park in Shenyang, Liaoning province, China, September 30, 2021. REUTERS/Tingshu Wang

Medical staff assist patients suffering from the coronavirus disease inside the COVID-19 ward of a hospital in Damascus, Syria September 29, 2021. Picture taken September 29, 2021. REUTERS/Firas Makdesi

A patient suffering from the coronavirus disease receives treatment inside the COVID-19 ward of a hospital in Damascus, Syria September 29, 2021. Picture taken September 29, 2021. REUTERS/Firas Makdesi

Medical staff assist patients suffering from the coronavirus disease inside the COVID-19 ward of a hospital in Damascus, Syria September 29, 2021. Picture taken September 29, 2021. REUTERS/Firas Makdesi

Patients suffering from the coronavirus disease receive treatment inside the COVID-19 ward of a hospital in Damascus, Syria September 29, 2021. Picture taken September 29, 2021. REUTERS/Firas Makdesi

Medical staff assist a patient suffering from the coronavirus disease inside the COVID-19 ward of a hospital in Damascus, Syria September 29, 2021. Picture taken September 29, 2021. REUTERS/Firas Makdesi

A medical staff assists patients suffering from the coronavirus disease inside the COVID-19 ward of a hospital in the opposition-held Idlib, Syria September 26, 2021. Picture taken September 26, 2021. REUTERS/Mahmoud Hassano

A medical staff assists a patient suffering from the coronavirus disease inside the COVID-19 ward of a hospital in the opposition-held Idlib, Syria September 26, 2021. Picture taken September 26, 2021. REUTERS/Mahmoud Hassano

Medical staff assist patients suffering from the coronavirus disease inside the COVID-19 ward of a hospital in the opposition-held Idlib, Syria September 26, 2021. Picture taken September 26, 2021. REUTERS/Mahmoud Hassano

Medical staff assist a patient suffering from the coronavirus disease inside the COVID-19 ward of a hospital in the opposition-held Idlib, Syria September 26, 2021. Picture taken September 26, 2021. REUTERS/Mahmoud Hassano

A medical staff assists patients suffering from the coronavirus disease inside the COVID-19 ward of a hospital in the opposition-held Idlib, Syria September 26, 2021. Picture taken September 26, 2021. REUTERS/Mahmoud Hassano

Medical staff assist a patient suffering from the coronavirus disease inside the COVID-19 ward of a hospital in the opposition-held Idlib, Syria September 26, 2021. Picture taken September 26, 2021. REUTERS/Mahmoud Hassano

A patient suffering from the coronavirus disease (COVID-19) receives treatment at an isolation center in the opposition-held town of Marea in northern Aleppo province, Syria September 25, 2021. Picture taken September 25, 2021. REUTERS/Mahmoud Hassano

A patient suffering from the coronavirus disease (COVID-19) receives oxygen at an isolation center in the opposition-held town of Marea, in northern Aleppo province, Syria September 25, 2021. Picture taken September 25, 2021. REUTERS/Mahmoud Hassano

White House Press Secretary Jen Psaki listens as U.S. Secretary of Homeland Security Alejandro Mayorkas speaks about an investigation into the treatment of Haitian migrants on the U.S.-Mexican border, during the daily briefing in the Brady Press Briefing Room at the White House in Washington, U.S., September 24, 2021. REUTERS/Evelyn Hockstein

U.S. Secretary of Homeland Security Alejandro Mayorkas speaks about an investigation into the treatment of Haitian migrants on the U.S.-Mexican border as he addresses the daily briefing in the Brady Press Briefing Room at the White House in Washington, U.S., September 24, 2021. REUTERS/Evelyn Hockstein

U.S. Secretary of Homeland Security Alejandro Mayorkas discusses the investigation into the treatment of Haitian migrants as he addresses the daily briefing in the Brady Press Briefing Room at the White House in Washington, U.S., September 24, 2021. REUTERS/Evelyn Hockstein

White House Press Secretary Jen Psaki listens as U.S. Secretary of Homeland Security Alejandro Mayorkas speaks about an investigation into the treatment of Haitian migrants on the U.S.-Mexican border, during the daily briefing in the Brady Press Briefing Room at the White House in Washington, U.S., September 24, 2021. REUTERS/Evelyn Hockstein

White House Press Secretary Jen Psaki listens as U.S. Secretary of Homeland Security Alejandro Mayorkas speaks about an investigation into the treatment of Haitian migrants on the U.S.-Mexican border, during the daily briefing in the Brady Press Briefing Room at the White House in Washington, U.S., September 24, 2021. REUTERS/Evelyn Hockstein

U.S. Secretary of Homeland Security Alejandro Mayorkas speaks about an investigation into the treatment of Haitian migrants on the U.S.-Mexican border as he addresses the daily briefing in the Brady Press Briefing Room at the White House in Washington, U.S., September 24, 2021. REUTERS/Evelyn Hockstein

White House Press Secretary Jen Psaki listens as U.S. Secretary of Homeland Security Alejandro Mayorkas speaks about an investigation into the treatment of Haitian migrants on the U.S.-Mexican border, during the daily briefing in the Brady Press Briefing Room at the White House in Washington, U.S., September 24, 2021. REUTERS/Evelyn Hockstein

U.S. Secretary of Homeland Security Alejandro Mayorkas takes questions as he speaks about an investigation into the treatment of Haitian migrants on the U.S.-Mexican border, during the daily briefing in the Brady Press Briefing Room at the White House in Washington, U.S., September 24, 2021. REUTERS/Evelyn Hockstein

U.S. Secretary of Homeland Security Alejandro Mayorkas speaks about an investigation into the treatment of Haitian migrants on the U.S.-Mexican border as he addresses the daily briefing in the Brady Press Briefing Room at the White House in Washington, U.S., September 24, 2021. REUTERS/Evelyn Hockstein

White House Press Secretary Jen Psaki listens as U.S. Secretary of Homeland Security Alejandro Mayorkas speaks about an investigation into the treatment of Haitian migrants on the U.S.-Mexican border, during the daily briefing in the Brady Press Briefing Room at the White House in Washington, U.S., September 24, 2021. REUTERS/Evelyn Hockstein

Registered nurses Johnna Hommell and Jessica Krumwiede attempt to find a vein to administer the Regeneron monoclonal antibody to Cathy Hardin, who was vaccinated prior to testing positive for the coronavirus disease (COVID-19), at the Sarasota Memorial Urgent Care Center in Sarasota, Florida, U.S., September 23, 2021. REUTERS/Shannon Stapleton

A vial of Regeneron monoclonal antibody sits on a medical table as registered nurse Jessica Krumwiede attempts to find a vein to administer it to Cathy Hardin, who was vaccinated prior to testing positive for the coronavirus disease (COVID-19), at the Sarasota Memorial Urgent Care Center in Sarasota, Florida, U.S., September 23, 2021. REUTERS/Shannon Stapleton

Cathy Hardin, who was vaccinated prior to testing positive for the coronavirus disease (COVID-19), has her blood pressure taken before attempting to receive the Regeneron monoclonal antibody treatment at the Sarasota Memorial Urgent Care Center in Sarasota, Florida, U.S., September 23, 2021. REUTERS/Shannon Stapleton