Chinese Foreign Ministry spokeswoman Hua Chunying attends a news conference in Beijing, China January 21, 2021. REUTERS/Carlos Garcia Rawlins

Reuters Graphics

Reuters Graphics

A coffin of a person who passed away is seen in the furnace hall at the Crematorium Nordheim as the coronavirus disease (COVID-19) outbreak continues in Zurich, Switzerland January 19, 2021. Picture taken January 19, 2021. REUTERS/Arnd Wiegmann

Human remains are seen at the Crematorium Nordheim as the coronavirus disease (COVID-19) outbreak continues in Zurich, Switzerland January 19, 2021. Picture taken January 19, 2021. REUTERS/Arnd Wiegmann

A coffin of a person who passed away is inserted into a furnace at the Crematorium Nordheim as the coronavirus disease (COVID-19) outbreak continues in Zurich, Switzerland January 19, 2021. Picture taken January 19, 2021. REUTERS/Arnd Wiegmann

Metal remains are collected for recycling after cremations at the Crematorium Nordheim as the coronavirus disease (COVID-19) outbreak continues in Zurich, Switzerland January 19, 2021. Picture taken January 19, 2021. REUTERS/Arnd Wiegmann

Human remains are seen at the Crematorium Nordheim as the coronavirus disease (COVID-19) outbreak continues in Zurich, Switzerland January 19, 2021. Picture taken January 19, 2021. REUTERS/Arnd Wiegmann

A coffin of a person who passed away is inserted into a furnace at the Crematorium Nordheim as the coronavirus disease (COVID-19) outbreak continues in Zurich, Switzerland January 19, 2021. Picture taken January 19, 2021. REUTERS/Arnd Wiegmann

A coffin of a person who passed away stands in the furnace hall at the Crematorium Nordheim as the coronavirus disease (COVID-19) outbreak continues in Zurich, Switzerland January 19, 2021. Picture taken January 19, 2021. REUTERS/Arnd Wiegmann

A coffin of a person who passed away is inserted into a furnace at the Crematorium Nordheim as the coronavirus disease (COVID-19) outbreak continues in Zurich, Switzerland January 19, 2021. Picture taken January 19, 2021. REUTERS/Arnd Wiegmann

Chinese Foreign Ministry spokeswoman Hua Chunying attends a news conference in Beijing, China January 21, 2021. REUTERS/Carlos Garcia Rawlins

Members of Iraqi security forcers insect the site of a suicide attack in a central market in Baghdad, Iraq January 21, 2021. REUTERS/Thaier al-Sudani

Rolf Steinmann, head of the funeral and cemetery office of the city of Zurich is pictured at the Crematorium Nordheim as the coronavirus disease (COVID-19) outbreak continues in Zurich, Switzerland January 19, 2021. Picture taken January 19, 2021. REUTERS/Arnd Wiegmann

Rolf Steinmann, head of the funeral and cemetery office of the city of Zurich is pictured at the Crematorium Nordheim as the coronavirus disease (COVID-19) outbreak continues in Zurich, Switzerland January 19, 2021. Picture taken January 19, 2021. REUTERS/Arnd Wiegmann

The site of a suicide attack in a central market is seen in Baghdad, Iraq January 21, 2021. REUTERS/Thaier al-Sudani

A man cycles past a graffiti covered wall amidst the spread of the coronavirus disease (COVID-19) on a street in Navi Mumbai, India January 21, 2021. REUTERS/Francis Mascarenhas

A man walks past a graffiti of people wearing protective masks amidst the spread of the coronavirus disease (COVID-19) on a street in Navi Mumbai, India January 21, 2021. REUTERS/Francis Mascarenhas

A man walks past a graffiti of a girl wearing a protective mask amidst the spread of the coronavirus disease (COVID-19) on a street in Navi Mumbai, India January 21, 2021. REUTERS/Francis Mascarenhas

A view shows a furnace and human remains at the Crematorium Nordheim as the coronavirus disease (COVID-19) outbreak continues in Zurich, Switzerland January 19, 2021. Picture taken January 19, 2021. REUTERS/Arnd Wiegmann

The coat of arms of Zurich is seen on urns at the Crematorium Nordheim as the coronavirus disease (COVID-19) outbreak continues in Zurich, Switzerland January 19, 2021. Picture taken January 19, 2021. REUTERS/Arnd Wiegmann

The coat of arms of Zurich is seen on urns at the Crematorium Nordheim as the coronavirus disease (COVID-19) outbreak continues in Zurich, Switzerland January 19, 2021. Picture taken January 19, 2021. REUTERS/Arnd Wiegmann

A view shows a furnace and human remains at the Crematorium Nordheim as the coronavirus disease (COVID-19) outbreak continues in Zurich, Switzerland January 19, 2021. Picture taken January 19, 2021. REUTERS/Arnd Wiegmann

A coffin of a person who passed away due to the coronavirus disease (COVID-19) stands in the furnace hall at the Crematorium Nordheim in Zurich, Switzerland January 19, 2021. Picture taken January 19, 2021. REUTERS/Arnd Wiegmann

Coffins of people who passed away are seen at the Crematorium Nordheim as the coronavirus disease (COVID-19) outbreak continues in Zurich, Switzerland January 19, 2021. Picture taken January 19, 2021. REUTERS/Arnd Wiegmann

A coffin of a person who passed away due to the coronavirus disease (COVID-19) stands in the furnace hall at the Crematorium Nordheim in Zurich, Switzerland January 19, 2021. Picture taken January 19, 2021. REUTERS/Arnd Wiegmann

A coffin lid is marked with a paper reading "Corona" at the Crematorium Nordheim as the coronavirus disease (COVID-19) continues in Zurich, Switzerland January 19, 2021. Picture taken January 19, 2021. REUTERS/Arnd Wiegmann

Coffins of people who passed away are seen in a cold room of the Crematorium Nordheim as the coronavirus disease (COVID-19) continues in Zurich, Switzerland January 19, 2021. Picture taken January 19, 2021. REUTERS/Arnd Wiegmann

Coffins of people who passed away are seen in a cold room of the Crematorium Nordheim as the coronavirus disease (COVID-19) continues in Zurich, Switzerland January 19, 2021. Picture taken January 19, 2021. REUTERS/Arnd Wiegmann

A coffin lid is marked with a paper reading "Corona" at the Crematorium Nordheim as the coronavirus disease (COVID-19) continues in Zurich, Switzerland January 19, 2021. Picture taken January 19, 2021. REUTERS/Arnd Wiegmann

A view shows the Crematorium Nordheim as the coronavirus disease (COVID-19) continues in Zurich, Switzerland January 19, 2021. Picture taken January 19, 2021. REUTERS/Arnd Wiegmann

Different types and sizes of urns are displayed at the Crematorium Nordheim as the coronavirus disease (COVID-19) continues in Zurich, Switzerland January 19, 2021. Picture taken January 19, 2021. REUTERS/Arnd Wiegmann

A general view of Melbourne Park as tennis players undergo a mandatory quarantine ahead of the Australian Open in Melbourne, Australia January 21, 2021. REUTERS/Kelly Defina

A view shows the site of a suicide attack in a central market in Baghdad, Iraq January 21, 2021. REUTERS/Thaier al-Sudani

Birds swim near a partially submerged goalpost in a flooded playing field after Storm Christoph arrived in Manchester, Britain January 21, 2021. REUTERS/Phil Noble

A medical specialist is seen at the Krylatskoye Ice Palace, which was converted into a temporary hospital for people suffering from the coronavirus disease (COVID-19), in Moscow, Russia, January 20, 2021. Picture taken January 20, 2021. REUTERS/Maxim Shemetov

A view shows wards at the Krylatskoye Ice Palace, which was converted into a temporary hospital for people suffering from the coronavirus disease (COVID-19), in Moscow, Russia, January 20, 2021. Picture taken January 20, 2021. REUTERS/Maxim Shemetov

A medical specialist works at the Krylatskoye Ice Palace, which was converted into a temporary hospital for people suffering from the coronavirus disease (COVID-19), in Moscow, Russia, January 20, 2021. Picture taken January 20, 2021. REUTERS/Maxim Shemetov

A view shows wards at the Krylatskoye Ice Palace, which was converted into a temporary hospital for people suffering from the coronavirus disease (COVID-19), in Moscow, Russia, January 20, 2021. Picture taken January 20, 2021. REUTERS/Maxim Shemetov

A patient receives medical treatment in a ward at the Krylatskoye Ice Palace, which was converted into a temporary hospital for people suffering from the coronavirus disease (COVID-19), in Moscow, Russia, January 20, 2021. Picture taken January 20, 2021. REUTERS/Maxim Shemetov

Tennis player Alexander Bublik of Kazakhstan arrives to a training at Melbourne Park as players undergo mandatory quarantine in advance of the Australian Open in Melbourne, Australia January 21, 2021. REUTERS/Kelly Defina

Tennis player Alexander Bublik of Kazakhstan arrives to a training at Melbourne Park as players undergo mandatory quarantine in advance of the Australian Open in Melbourne, Australia January 21, 2021. REUTERS/Kelly Defina

A medical specialist works at the Krylatskoye Ice Palace, which was converted into a temporary hospital for people suffering from the coronavirus disease (COVID-19), in Moscow, Russia, January 20, 2021. Picture taken January 20, 2021. REUTERS/Maxim Shemetov

A view shows the site of a suicide attack in Baghdad, Iraq January 21, 2021. REUTERS/Thaier al-Sudani

A medical specialist and a patient are seen in a ward at the Krylatskoye Ice Palace, which was converted into a temporary hospital for people suffering from the coronavirus disease (COVID-19), in Moscow, Russia, January 20, 2021. Picture taken January 20, 2021. REUTERS/Maxim Shemetov

Patients follow instructions while practicing Tai Chi at the Krylatskoye Ice Palace, which was converted into a temporary hospital for people suffering from the coronavirus disease (COVID-19), in Moscow, Russia, January 20, 2021. Picture taken January 20, 2021. REUTERS/Maxim Shemetov

A view shows wards at the Krylatskoye Ice Palace, which was converted into a temporary hospital for people suffering from the coronavirus disease (COVID-19), in Moscow, Russia, January 20, 2021. Picture taken January 20, 2021. REUTERS/Maxim Shemetov

A medical specialist puts a pulse oximeter on a patient's finger to check his blood oxygen level in a ward at the Krylatskoye Ice Palace, which was converted into a temporary hospital for people suffering from the coronavirus disease (COVID-19), in Moscow, Russia, January 20, 2021. Picture taken January 20, 2021. REUTERS/Maxim Shemetov

A general view of Melbourne Park as tennis players undergo a mandatory quarantine ahead of the Australian Open in Melbourne, Australia January 21, 2021. REUTERS/Kelly Defina

A view shows wards at the Krylatskoye Ice Palace, which was converted into a temporary hospital for people suffering from the coronavirus disease (COVID-19), in Moscow, Russia, January 20, 2021. Picture taken January 20, 2021. REUTERS/Maxim Shemetov

A patient receives medical treatment in a ward at the Krylatskoye Ice Palace, which was converted into a temporary hospital for people suffering from the coronavirus disease (COVID-19), in Moscow, Russia, January 20, 2021. Picture taken January 20, 2021. REUTERS/Maxim Shemetov

Patients follow instructions while practicing Tai Chi at the Krylatskoye Ice Palace, which was converted into a temporary hospital for people suffering from the coronavirus disease (COVID-19), in Moscow, Russia, January 20, 2021. Picture taken January 20, 2021. REUTERS/Maxim Shemetov

Tennis players and staff undergoing mandatory quarantine ahead of the Australian Open arrive for training in a restricted area at Melbourne Park in Melbourne, Australia January 21, 2021. REUTERS/Kelly Defina

President of Georgia Salome Zourabichvili looks on ahead of a meeting at the European Council in Brussels, Belgium January 21, 2021. Stephanie Lecocq/Pool via REUTERS

A person walks past the entrance to a testing site, amid the coronavirus disease (COVID-19) pandemic, in London, Britain, January 21, 2021. REUTERS/Hannah McKay

A man walks past a testing site sign, amid the coronavirus disease (COVID-19) pandemic, in London, Britain, January 21, 2021. REUTERS/Hannah McKay

A healthcare worker receives a dose of COVISHIELD, a COVID-19 vaccine manufactured by Serum Institute of India, at a school converted into a vaccine centre at Sanand, on the outskirts of Ahmedabad, India January 21, 2021. REUTERS/Amit Dave

Iraqi security forces keep guard the site of a suicide attack in Baghdad, Iraq January 21, 2021. REUTERS/Thaier al-Sudani

A council worker checks the bank of a flooded River Mersey at Didsbury after Storm Christoph arrived in Manchester, Britain, January 21, 2021. REUTERS/Phil Noble

A council worker checks a bridge over a flooded River Mersey at Didsbury after Storm Christoph arrived in Manchester, Britain, January 21, 2021. REUTERS/Phil Noble