A general view of Albert Einstein Hospital, where Brazil's President Jair Bolsonaro will undergo surgery in Sao Paulo, Brazil, September 25, 2020. REUTERS/Amanda Perobelli

A journalist stands at the entrance of Albert Einstein Hospital, where Brazil's President Jair Bolsonaro will undergo surgery in Sao Paulo, Brazil, September 25, 2020. REUTERS/Amanda Perobelli

School buses are seen at the parking lot before being used for transporting patients infected with the COVID-19 from a local district health facility to emergency hospital Athlete's Village, amid the outbreak of the coronavirus disease (COVID-19), in Jakarta, Indonesia, September 25, 2020. REUTERS/Willy Kurniawan

A driver wearing a personal protective equipment (PPE) drives a school bus transporting patients infected with COVID-19 from a local district health facility to emergency hospital Athlete's Village, amid the outbreak of the coronavirus disease (COVID-19), in Jakarta, Indonesia, September 25, 2020. REUTERS/Willy Kurniawan

29-year-old school bus driver Yusuf Iswahyu rests before transporting patients infected with COVID-19 from a local district health facility to emergency hospital Athlete's Village, amid the outbreak of the coronavirus disease (COVID-19), in Jakarta, Indonesia, September 25, 2020. REUTERS/Willy Kurniawan

A school bus arrives to be cleaned after transporting patients infected with COVID-19 to emergency hospital Athlete's Village, amid the outbreak of the coronavirus disease (COVID-19), in Jakarta, Indonesia, September 25, 2020. REUTERS/Willy Kurniawan

29-year-old school bus driver Yusuf Iswahyu checks the bus before transporting patients infected with COVID-19 from a local district health facility to emergency hospital Athlete's Village, amid the outbreak of the coronavirus disease (COVID-19), in Jakarta, Indonesia, September 25, 2020. REUTERS/Willy Kurniawan

A health worker wearing a personal protective equipment (PPE) helps a patient infected with COVID-19 to get into a school bus as he is transported from a local district health facility to emergency hospital Athlete's Village, amid the outbreak of the coronavirus disease (COVID-19), in Jakarta, Indonesia, September 25, 2020. REUTERS/Willy Kurniawan

A worker wearing a personal protective equipment (PPE) carries a disinfectant blower as he cleans school buses after transporting patients infected with COVID-19 to emergency hospital Athlete's Village, amid the outbreak of the coronavirus disease (COVID-19), in Jakarta, Indonesia, September 25, 2020. REUTERS/Willy Kurniawan

General view of the site where the Sao Goncalo campaign hospital was built, amid the coronavirus disease (COVID-19) outbreak, in the Sao Goncalo city in Rio de Janeiro state, Brazil September 16, 2020. Picture taken September 16, 2020. REUTERS/Pilar Olivares

People run past in front of the Maracana campaign hospital, amid the coronavirus disease (COVID-19) outbreak, next to the Maracana stadium in Rio de Janeiro, Brazil September 16, 2020. Picture taken September 16, 2020. REUTERS/Pilar Olivares

The Maracana campaign hospital is seen next to the Maracana stadium amid the coronavirus disease (COVID-19) outbreak in Rio de Janeiro, Brazil September 16, 2020. Picture taken September 16, 2020. REUTERS/Pilar Olivares

People run past the Maracana campaign hospital, amid the coronavirus disease (COVID-19) outbreak, next to the Maracana stadium in Rio de Janeiro, Brazil September 16, 2020. Picture taken September 16, 2020. REUTERS/Pilar Olivares

Doctor Pedro Archer is pictured outside a hospital during the coronavirus disease (COVID-19) outbreak, in Niteroi, near Rio de Janeiro, Brazil, September 22, 2020. Picture taken September 22, 2020. REUTERS/Ricardo Moraes

Doctor Pedro Archer is pictured outside a hospital during the coronavirus disease (COVID-19) outbreak, in Niteroi, near Rio de Janeiro, Brazil, September 22, 2020. Picture taken September 22, 2020. REUTERS/Ricardo Moraes

A laboratory technician works as Turkey began final Phase III trials of an experimental Chinese coronavirus disease (COVID-19) vaccine, at Kocaeli University Research Hospital in Kocaeli, Turkey September, 25, 2020. REUTERS/Murad Sezer

A laboratory technician works as Turkey began final Phase III trials of an experimental Chinese coronavirus disease (COVID-19) vaccine, at Kocaeli University Research Hospital in Kocaeli, Turkey September, 25, 2020. REUTERS/Murad Sezer

A health worker injects an experimental Chinese coronavirus disease (COVID-19) vaccine to volunteer and doctor Naim Celik as Turkey began final Phase III trials at Kocaeli University Research Hospital in Kocaeli, Turkey September, 25, 2020. REUTERS/Murad Sezer

A health worker injetcs an experimental Chinese coronavirus disease (COVID-19) vaccine to a volunteer as Turkey began final Phase III trials at Kocaeli University Research Hospital in Kocaeli, Turkey September, 25, 2020. REUTERS/Murad Sezer

A laboratory technician works as Turkey began final Phase III trials of an experimental Chinese coronavirus disease (COVID-19) vaccine, at Kocaeli University Research Hospital in Kocaeli, Turkey September, 25, 2020. REUTERS/Murad Sezer

Volunteer hospital employee Gurkan Kaya is injected with an experimental Chinese coronavirus disease (COVID-19) vaccine as Turkey began final Phase III trials at Kocaeli University Research Hospital in Kocaeli, Turkey September, 25, 2020. REUTERS/Murad Sezer

A volunteer is injected with an experimental Chinese coronavirus disease (COVID-19) vaccine as Turkey began final Phase III trials at Kocaeli University Research Hospital in Kocaeli, Turkey September, 25, 2020. REUTERS/Murad Sezer

A health worker holds an experimental Chinese coronavirus disease (COVID-19) vaccine to inject a volunteer as Turkey began final Phase III trials at Kocaeli University Research Hospital in Kocaeli, Turkey September, 25, 2020. REUTERS/Murad Sezer

A volunteer is injected with an experimental Chinese coronavirus disease (COVID-19) vaccine as Turkey began final Phase III trials at Kocaeli University Research Hospital in Kocaeli, Turkey September, 25, 2020. REUTERS/Murad Sezer

A volunteer is injected with an experimental Chinese coronavirus disease (COVID-19) vaccine as Turkey began final Phase III trials at Kocaeli University Research Hospital in Kocaeli, Turkey September, 25, 2020. REUTERS/Murad Sezer

An ultraviolet (UV) robot designed to significantly reduce the risk of hospital acquired infections cleans St Pancras International station, amid the coronavirus disease (COVID-19) outbreak, in London, Britain, September 23, 2020. REUTERS/Hannah McKay

An ultraviolet (UV) robot designed to significantly reduce the risk of hospital acquired infections cleans St Pancras International station, amid the coronavirus disease (COVID-19) outbreak in London, Britain, September 23, 2020. REUTERS/Hannah McKay

An ultraviolet (UV) robot designed to significantly reduce the risk of hospital acquired infections cleans St Pancras International station, amid the coronavirus disease (COVID-19) outbreak in London, Britain, September 23, 2020. REUTERS/Hannah McKay

Tarik Sheibani, 47, an Iraqi doctor and director of Al-Amal Hospital, looks at a video on social media showing him being beaten up violently by the relatives of a COVID-19 victim at his hospital during an interview with Reuters at his home, in Kufa near Najaf, Iraq September 13, 2020. Picture taken September 13, 2020. REUTERS/Thaier Al-Sudani

A patient suffering from the coronavirus disease (COVID-19), is seen in the isolation hallway at Al-Amal Hospital, in Najaf, Iraq September 13, 2020. Picture taken September 13, 2020. REUTERS/Thaier Al-Sudani

Tarik Sheibani, 47, an Iraqi doctor and director of Al-Amal Hospital, sits with his children during an interview with Reuters at his home, in Kufa near Najaf, Iraq September 13, 2020. Picture taken September 13, 2020. REUTERS/Thaier Al-Sudani

Members of the medical staff, wearing protective suits and face masks, treat patients suffering from the coronavirus disease (COVID-19) at Al-Amal Hospital, in Najaf, Iraq September 13, 2020. Picture taken September 13, 2020. REUTERS/Thaier AL-Sudani

Tarik Sheibani, 47, an Iraqi doctor and director of Al-Amal Hospital wears a face mask as he poses for a photo at the Hospital, in the holy city of Najaf, Iraq September 13, 2020. Picture taken September 13, 2020. REUTERS/Thaier Al-Sudani

Tarik Sheibani, 47, an Iraqi doctor and director of Al-Amal Hospital, wears a protective suit as he talks to a member of medical staff at a quarantine ward at Al-Amal Hospital, following the outbreak of the coronavirus disease (COVID-19), in Najaf, Iraq September 13, 2020. Picture taken September 13, 2020. REUTERS/Thaier Al-Sudani

Tarik Sheibani, 47, an Iraqi doctor and director of Al-Amal Hospital, wears a protective suit as he talks to a member of medical staff at a quarantine ward at Al-Amal Hospital, following the outbreak of the coronavirus disease (COVID-19), in Najaf, Iraq September 13, 2020. Picture taken September 13, 2020. REUTERS/Thaier Al-Sudani

Tarik Sheibani, 47, an Iraqi doctor and director of Al-Amal Hospital, wears a protective suit as he walks at a quarantine ward at Al-Amal Hospital, following the outbreak of the coronavirus disease (COVID-19), in Najaf, Iraq September 13, 2020. Picture taken September 13, 2020. REUTERS/Thaier Al-Sudani

Tarik Sheibani, 47, an Iraqi doctor and director of Al-Amal Hospital, looks at a video on social media showing him being beaten up violently by the relatives of a COVID-19 victim at his hospital during an interview with Reuters at his home, in Kufa near Najaf, Iraq September 13, 2020. Picture taken September 13, 2020. REUTERS/Thaier Al-Sudani

Patients suffering from the coronavirus disease (COVID-19) are seen at Al-Amal Hospital, in Najaf, Iraq September 13, 2020. Picture taken September 13, 2020. REUTERS/Thaier Al-Sudani

Tarik Sheibani, 47, an Iraqi doctor and director of Al-Amal Hospital, wears a protective suit at a hospital where he treats coronavirus disease patients, in Najaf, Iraq September 13, 2020. Picture taken September 13, 2020. REUTERS/Thaier Al-Sudani

Patients suffering from the coronavirus disease (COVID-19) are seen at Al-Amal Hospital, in Najaf, Iraq September 13, 2020. Picture taken September 13, 2020. REUTERS/Thaier Al-Sudani

Patients suffering from the coronavirus disease (COVID-19), are seen inside the isolation room at Al-Amal Hospital, in Najaf, Iraq September 13, 2020. Picture taken September 13, 2020. REUTERS/Thaier Al-Sudani

A medical worker tends to a patient suffering from the coronavirus disease (COVID-19) at Al-Amal Hospital, in Najaf, Iraq September 13, 2020. Picture taken September 13, 2020. REUTERS/Thaier Al-Sudani

A view of the East Meadow in Central Park outside Mount Sinai Hospital where The Samaritan's Purse Emergency Field Hospital had been located to treat patients during the outbreak of the coronavirus disease (COVID-19) in New York, U.S., September 15, 2020. Picture taken September 15, 2020. REUTERS/Mike Segar

A now empty lot sits behind Bellevue Hospital where a temporary morgue set up with refrigerated trucks to store the bodies of deceased people had been in Manhattan, during the outbreak of the coronavirus disease (COVID-19) in New York, U.S., September 15, 2020. Picture taken September 15, 2020. REUTERS/Mike Segar

A view of the East Meadow in Central Park outside Mount Sinai Hospital where The Samaritan's Purse Emergency Field Hospital had been located to treat patients during the outbreak of the coronavirus disease (COVID-19) in New York, U.S., September 15, 2020. Picture taken September 15, 2020. REUTERS/Mike Segar

A view of the East Meadow in Central Park outside Mount Sinai Hospital where The Samaritan's Purse Emergency Field Hospital had been located to treat patients during the outbreak of the coronavirus disease (COVID-19) in New York, U.S., September 15, 2020. Picture taken September 15, 2020. REUTERS/Mike Segar

A combo picture shows The Samaritan's Purse Emergency Field Hospital in Central Park in Manhattan during the outbreak of the coronavirus disease (COVID-19) on April 8, 2020 and a view of the East Meadow in Central Park outside Mount Sinai Hospital where The Samaritan's Purse Emergency Field Hospital had been located to treat patients during the outbreak of the coronavirus disease (COVID-19) in New York, U.S., September 15, 2020. REUTERS/Mike Segar

A combo pictures shows The Samaritan's Purse Emergency Field Hospital in New York's Central Park in Manhattan during the outbreak of the coronavirus disease (COVID-19) on April 8, 2020 and a view of the East Meadow in Central Park outside Mount Sinai Hospital where The Samaritan's Purse Emergency Field Hospital had been located to treat patients during the outbreak of the coronavirus disease (COVID-19) in New York, U.S., September 15, 2020. REUTERS/Mike Segar

A combo picture shows a view of The Samaritan's Purse Emergency Field Hospital in Central Park in Manhattan during the outbreak of the coronavirus disease (COVID-19) on April 8, 2020 and view of the East Meadow in Central Park outside Mount Sinai Hospital where The Samaritan's Purse Emergency Field Hospital had been located to treat patients during the outbreak of the coronavirus disease (COVID-19) in New York, U.S., September 15, 2020. REUTERS/Mike Segar

A combo picture shows a temporary morgue set up with refrigerated trucks to store the bodies of deceased people is next to Bellevue Hospital in Manhattan during the outbreak of the coronavirus disease (COVID-19) on May 27, 2020 and a now empty lot sits behind Bellevue Hospital where a temporary morgue set up with refrigerated trucks to store the bodies of deceased people had been in Manhattan, during the outbreak of the coronavirus disease (COVID-19) in New York, U.S., September 15, 2020. REUTERS/Mike Segar

Members of the medical staff treat a patient suffering from the coronavirus disease (COVID-19) at the Intensive Care Unit (ICU) of the General University Hospital in Prague, Czech Republic, September 22, 2020. REUTERS/David W Cerny

Members of the medical staff embrace as they treat patients suffering from the coronavirus disease (COVID-19) at the Intensive Care Unit (ICU) of the General University Hospital in Prague, Czech Republic, September 22, 2020. REUTERS/David W Cerny

A patient suffering from the coronavirus disease (COVID-19) rests at the Intensive Care Unit (ICU) of the General University Hospital in Prague, Czech Republic, September 22, 2020. REUTERS/David W Cerny

A member of the medical staff treats a patient suffering from the coronavirus disease (COVID-19) at the Intensive Care Unit (ICU) of the General University Hospital in Prague, Czech Republic, September 22, 2020. REUTERS/David W Cerny

Members of the medical staff treat a patient suffering from the coronavirus disease (COVID-19) at the Intensive Care Unit (ICU) of the General University Hospital in Prague, Czech Republic, September 22, 2020. REUTERS/David W Cerny

Members of the medical staff treat a patient suffering from the coronavirus disease (COVID-19) at the Intensive Care Unit (ICU) of the General University Hospital in Prague, Czech Republic, September 22, 2020. REUTERS/David W Cerny

Members of the medical staff treat patients suffering from the coronavirus disease (COVID-19) at the Intensive Care Unit (ICU) of the General University Hospital in Prague, Czech Republic, September 22, 2020. REUTERS/David W Cerny

Members of the medical staff treat a patient suffering from the coronavirus disease (COVID-19) at the Intensive Care Unit (ICU) of the General University Hospital in Prague, Czech Republic, September 22, 2020. REUTERS/David W Cerny

A member of the medical staff treats a patient suffering from the coronavirus disease (COVID-19) at the Intensive Care Unit (ICU) of the General University Hospital in Prague, Czech Republic, September 22, 2020. REUTERS/David W Cerny