A closed school is seen during the country's lockdown, amid the coronavirus disease (COVID-19) pandemic, in Oeiras, Portugal January 22, 2021. REUTERS/Pedro Nunes

Alpine Skiing - Men's Downhill - Kitzbuehel, Austria - January 22, 2021 A combination photo shows Switzerland's Urs Kryenbuehl crashing during his run REUTERS/Leonhard Foeger

Residents wear face masks as they walk at Jordan residential area, where tens of thousands of its residents will be placed in a lockdown to contain a new outbreak of the coronavirus disease (COVID-19), in Hong Kong, China January 22, 2021. REUTERS/Tyrone Siu

A delegate presents votes that arrived by mail for the election of the new head of Germany's conservative CDU party after the party's 33rd congress held online because of the coronavirus pandemic, in Berlin, Germany January 22, 2021. Odd Andersen/Pool via REUTERS

A delegate presents votes that arrived by mail for the election of the new head of Germany's conservative CDU party after the party's 33rd congress held online because of the coronavirus pandemic, in Berlin, Germany January 22, 2021. Odd Andersen/Pool via REUTERS

A delegate presents votes that arrived by mail for the election of the new head of Germany's conservative CDU party after the party's 33rd congress held online because of the coronavirus pandemic, in Berlin, Germany January 22, 2021. Odd Andersen/Pool via REUTERS

A delegate presents votes that arrived by mail for the election of the new head of Germany's conservative CDU party after the party's 33rd congress held online because of the coronavirus pandemic, in Berlin, Germany January 22, 2021. Odd Andersen/Pool via REUTERS

Streets are flooded after the River Ouse burst banks in York, Britain, January 22, 2021. REUTERS/Lee Smith

A man walks through a flooded street after the River Ouse burst banks in York, Britain, January 22, 2021. REUTERS/Lee Smith

A general view as delegates count votes that arrived by mail for the election of the new head of Germany's conservative CDU party after the party's 33rd congress held online because of the coronavirus pandemic, in Berlin, Germany January 22, 2021. Odd Andersen/Pool via REUTERS

Delegates count votes that arrived by mail for the election of the new head of Germany's conservative CDU party after the party's 33rd congress held online because of the coronavirus pandemic, in Berlin, Germany January 22, 2021. Odd Andersen/Pool via REUTERS

People walk through a partially flooded street after the River Ouse burst banks in York, Britain, January 22, 2021. REUTERS/Lee Smith

A delegate counts votes that arrived by mail for the election of the new head of Germany's conservative CDU party after the party's 33rd congress held online because of the coronavirus pandemic, in Berlin, Germany January 22, 2021. Odd Andersen/Pool via REUTERS

Streets are flooded after the River Ouse burst banks in York, Britain, January 22, 2021. REUTERS/Lee Smith

A general view as delegates count votes that arrived by mail for the election of the new head of Germany's conservative CDU party after the party's 33rd congress held online because of the coronavirus pandemic, in Berlin, Germany January 22, 2021. Odd Andersen/Pool via REUTERS

Residents wear face masks as they walk at Temple Street Night Market, at Jordan residential area, where tens of thousands of its residents will be placed in a lockdown to contain a new outbreak of the coronavirus disease (COVID-19), in Hong Kong, China January 22, 2021. REUTERS/Tyrone Siu

Delegates count votes that arrived by mail for the election of the new head of Germany's conservative CDU party after the party's 33rd congress held online because of the coronavirus pandemic, in Berlin, Germany January 22, 2021. Odd Andersen/Pool via REUTERS

Alpine Skiing - Men's Downhill - Kitzbuehel, Austria - January 22, 2021 A medical helicopter transports Switzerland's Urs Kryenbuehl to hospital after he crashed during his run REUTERS/Leonhard Foeger

A delegate counts votes that arrived by mail for the election of the new head of Germany's conservative CDU party after the party's 33rd congress held online because of the coronavirus pandemic, in Berlin, Germany January 22, 2021. Odd Andersen/Pool via REUTERS

A delegate counts votes that arrived by mail for the election of the new head of Germany's conservative CDU party after the party's 33rd congress held online because of the coronavirus pandemic, in Berlin, Germany January 22, 2021. Odd Andersen/Pool via REUTERS

Palestinian demonstrators react to tear gas fired by Israeli troops during a protest against Israeli settlements, In Beit Dajan in the Israeli-occupied West Bank January 22, 2021. REUTERS/Raneen Sawafta

Two children pose for a picture on a partially flooded street after the River Ouse burst banks in York, Britain, January 22, 2021. REUTERS/Lee Smith

A Palestinian demonstrator hurls stones as gear gas fired by Israeli troops during a protest against Israeli settlements, In Beit Dajan in the Israeli-occupied West Bank January 22, 2021. REUTERS/Raneen Sawafta

Yuen Kwok-yung, a leading microbiologist and infectious-diseases expert at the University of Hong Kong, speaks to media, at Jordan residential area, where tens of thousands of its residents will be placed in a lockdown to contain a new outbreak of the coronavirus disease (COVID-19), in Hong Kong, China January 22, 2021. REUTERS/Tyrone Siu

A woman pushes a trolley with a child past a flooded street, after the River Ouse burst banks, in York, Britain, January 22, 2021. REUTERS/Lee Smith

People stand on a partially flooded street after the River Ouse burst banks in York, Britain, January 22, 2021. REUTERS/Lee Smith

A street is flooded after the River Ouse burst banks in York, Britain, January 22, 2021. REUTERS/Lee Smith

Two children stand on a partially flooded street after the River Ouse burst banks in York, Britain, January 22, 2021. REUTERS/Lee Smith

A medical worker in a protective suit helps residents to register outside at a residential area at Jordan where tens of thousands of its residents will be placed in a lockdown to contain a new outbreak of the coronavirus disease (COVID-19), in Hong Kong, China January 22, 2021. REUTERS/Tyrone Siu

A street is flooded after the River Ouse burst banks in York, Britain, January 22, 2021. REUTERS/Lee Smith

A man stands next to a flooded street after the River Ouse burst banks in York, Britain, January 22, 2021. REUTERS/Lee Smith

A sign is partially covered by water on a flooded street, after the River Ouse burst banks, in York, Britain, January 22, 2021. REUTERS/Lee Smith

Medical workers in protective suits help residents to register outside at a residential area at Jordan where tens of thousands of its residents will be placed in a lockdown to contain a new outbreak of the coronavirus disease (COVID-19), in Hong Kong, China January 22, 2021. REUTERS/Tyrone Siu

Medical workers in protective suits are seen outside at a residential area at Jordan where tens of thousands of its residents will be placed in a lockdown to contain a new outbreak of the coronavirus disease (COVID-19), in Hong Kong, China January 22, 2021. REUTERS/Tyrone Siu

A woman walks past a closed restaurant at Piazza Navona as the spread of the coronavirus disease (COVID-19) continues, in Rome, Italy January 22, 2021. REUTERS/Guglielmo Mangiapane

Residents queue up for mandatory coronavirus disease (COVID-19) testing outside at a residential area at Jordan where tens of thousands of its residents will be placed in a lockdown to contain a new outbreak of the coronavirus disease (COVID-19), in Hong Kong, China January 22, 2021. REUTERS/Tyrone Siu

Residents queue up for mandatory coronavirus disease (COVID-19) testing outside at a residential area at Jordan where tens of thousands of its residents will be placed in a lockdown to contain a new outbreak of the coronavirus disease (COVID-19), in Hong Kong, China January 22, 2021. REUTERS/Tyrone Siu

A medical worker in a protective suit helps residents to register outside at a residential area at Jordan where tens of thousands of its residents will be placed in a lockdown to contain a new outbreak of the coronavirus disease (COVID-19), in Hong Kong, China January 22, 2021. REUTERS/Tyrone Siu

A total of 22 workers were trapped underground in the Hushan gold mine on the outskirts of Yantai, on China’s eastern coast, following the January 10 blast

Healthcare workers gesture during a protest against forced transfer to new Isabel Zendal hospital outside La Paz hospital, amid the coronavirus disease (COVID-19) outbreak, in Madrid, Spain January 22, 2021. REUTERS/Juan Medina

Alpine Skiing - Men's Downhill - Kitzbuehel, Austria - January 22, 2021 Austria's Daniel Danklmaier reacts after his run REUTERS/Leonhard Foeger

Alpine Skiing - Men's Downhill - Kitzbuehel, Austria - January 22, 2021 Austria's Daniel Danklmaier in action REUTERS/Lisi Niesner

Alpine Skiing - Men's Downhill - Kitzbuehel, Austria - January 22, 2021 Austria's Hannes Reichelt in action REUTERS/Lisi Niesner

A person wears a mask with a pin attached reading: "Don't shut up" as healthcare workers protest against forced transfer to new Isabel Zendal hospital outside La Paz hospital, amid the coronavirus disease (COVID-19) outbreak, in Madrid, Spain January 22, 2021. REUTERS/Juan Medina

A flooded street is pictured in York, Britain, January 22, 2021. REUTERS/Lee Smith

Alpine Skiing - Men's Downhill - Kitzbuehel, Austria - January 22, 2021 Austria's Hannes Reichelt reacts after his run REUTERS/Leonhard Foeger

A person wears a mask with a pin attached reading: "Don't shut up" as healthcare workers protest against forced transfer to new Isabel Zendal hospital outside La Paz hospital, amid the coronavirus disease (COVID-19) outbreak, in Madrid, Spain January 22, 2021. REUTERS/Juan Medina

Empty chairs are seen outside a closed restaurant at Piazza Navona as the spread of the coronavirus disease (COVID-19) continues, in Rome, Italy January 22, 2021. REUTERS/Guglielmo Mangiapane

Alpine Skiing - Men's Downhill - Kitzbuehel, Austria - January 22, 2021 Germany's Josef Ferstl in action REUTERS/Lisi Niesner

Alpine Skiing - Men's Downhill - Kitzbuehel, Austria - January 22, 2021 Germany's Josef Ferstl reacts after his run REUTERS/Leonhard Foeger

A person wearing a mask looks on as healthcare workers protest against forced transfer to new Isabel Zendal hospital outside La Paz hospital, amid the coronavirus disease (COVID-19) outbreak, in Madrid, Spain January 22, 2021. REUTERS/Juan Medina

Alpine Skiing - Men's Downhill - Kitzbuehel, Austria - January 22, 2021 Austria's Otmar Striedinger in action REUTERS/Lisi Niesner

A menu is seen outside a closed restaurant at Piazza Navona as the spread of the coronavirus disease (COVID-19) continues, in Rome, Italy January 22, 2021. REUTERS/Guglielmo Mangiapane

A man sits outside a closed restaurant at Piazza Navona as the spread of the coronavirus disease (COVID-19) continues, in Rome, Italy January 22, 2021. REUTERS/Guglielmo Mangiapane

Alpine Skiing - Men's Downhill - Kitzbuehel, Austria - January 22, 2021 Austria's Otmar Striedinger in action REUTERS/Lisi Niesner

Alpine Skiing - Men's Downhill - Kitzbuehel, Austria - January 22, 2021 Austria's Otmar Striedinger reacts after his run REUTERS/Leonhard Foeger

A healthcare worker gestures during a protest against forced transfer to new Isabel Zendal hospital outside La Paz hospital, amid the coronavirus disease (COVID-19) outbreak, in Madrid, Spain January 22, 2021. REUTERS/Juan Medina

Alpine Skiing - Men's Downhill - Kitzbuehel, Austria - January 22, 2021 France's Maxence Muzaton in action REUTERS/Lisi Niesner

People walk past a closed restaurant at Piazza Navona as the spread of the coronavirus disease (COVID-19) continues, in Rome, Italy January 22, 2021. REUTERS/Guglielmo Mangiapane

Alpine Skiing - Men's Downhill - Kitzbuehel, Austria - January 22, 2021 France's Maxence Muzaton reacts after his run REUTERS/Leonhard Foeger