A view shows the deserted business district of La Defense as lockdown is imposed to slow the spreading of the coronavirus disease (COVID-19) in Paris, France, March 18, 2020.

A cyclist crosses an empty square in central Maastricht after Dutch schools, cafes, restaurants and sport clubs were told to close down as the Netherlands imposed tight restrictions to prevent the spread of the coronavirus disease (COVID-19), Netherlands March 16, 2020. Image used for illustrative purpose.

A police officer wears a mask as he walks in front of the Oriental Pearl Tower, as the country is hit by an outbreak of a new coronavirus, in Lujiazui financial district in Pudong, Shanghai, China, February 5, 2020. REUTERS/Aly Song

An empty street is seen in Yueyang, Hunan Province, near the border to Hubei Province, which is under partial lockdown after an outbreak of a new coronavirus, in China January 28, 2020.

A view shows the deserted Pont des Arts bridge with the Institut de France in the background in Paris as a lockdown is imposed to slow the rate of the coronavirus disease (COVID-19) in France, March 18, 2020.

Empty street is seen in Manhattan borough following the outbreak of coronavirus disease (COVID-19), in New York City, U.S., Mar 15, 2020.

A worker sanitises St. Mark's square as a measure to fight against the coronavirus contagion in Venice, Italy, March 12, 2020.

A man climbs the stairs in empty Beirut Souks after Lebanon declared a medical state of emergency on Sunday as part of the preventive measures against the spread of coronavirus disease (COVID-19), in downtown Beirut, Lebanon March 17, 2020.

A view shows the deserted area in front of the glass Pyramid of the Louvre museum in Paris as a lockdown is imposed to slow the rate of the coronavirus disease (COVID-19) in France, March 18, 2020.

A lone person stands on the empty square between La Almudena Cathedral and the Royal Palace during partial lockdown as part of a 15-day state of emergency to combat the coronavirus disease outbreak, in Madrid, Spain March 15, 2020.

Statues are illuminated by sunlight inside of an empty U.S. Capitol Rotunda, following the government's notice to halt all public building tours due to the coronavirus disease (COVID-19), on Capitol Hill in Washington, D.C., U.S., March 17, 2020.

Empty chairs are seen at the deck of a local restaurant that is closed due to the outbreak of coronavirus disease (COVID-19), in Hoboken, New Jersey, U.S., March 16, 2020.

A view of the Duomo square on the second day of an unprecedented lockdown across all of the country, imposed to slow the outbreak of coronavirus, in Milan, Italy March 11, 2020.

Downtown streets of Seattle shown during the outbreak of coronavirus disease (COVID-19), in this aerial photo over Seattle, Washington, U.S. March 16, 2020.

A view shows deserted banks of the river Seine near the Louvre museum in Paris as a lockdown is imposed to slow the rate of the coronavirus disease (COVID-19) in France, March 18, 2020.

An empty Brooklyn Bridge is seen during the outbreak of coronavirus disease (COVID-19), in New York City, New York, U.S., March 17, 2020.

Empty parking lots are seen in the Manhattan borough following the outbreak of coronavirus disease (COVID-19), in New York City, U.S., March 15, 2020.

The mostly deserted steps of the Sydney Opera House, where scheduled public performances have been cancelled due to the coronavirus disease (COVID-19), are seen on a quiet morning in Sydney, Australia, March 18, 2020.

A view shows the deserted Arc de Triomphe as lockdown is imposed to slow the spreading of the coronavirus disease (COVID-19) in Paris, France, March 18, 2020.

General view of a empty Westminster Bridge as the number of coronavirus (COVID-19) cases grow around the world, in London, Britain, March 18, 2020.

A general view at the almost empty square, Bebelplatz with the Faculty of Law of the Humboldt University in Berlin, Germany, March 13, 2020.

A woman wearing a protective face mask crosses the empty Callao square during partial lockdown as part of a 15-day state of emergency to combat the coronavirus disease outbreak, in Madrid, Spain March 15, 2020.

King County Metro buses sit at the King County Metro Central Base in storage during the outbreak of coronavirus disease (COVID-19), in Seattle, Washington, U.S., March 16, 2020. Picture taken March 16, 2020. Image used for illustrative purpose.

An empty cafe is seen after the government closed shops and restaurants and asked people to stay at home amid the fears of coronavirus disease (COVID-19), in Vienna, Austria March 16, 2020.