Personnel walks near a model quarantine zone at the Nepalese Army headquarters amid concerns about the spread of coronavirus disease (COVID-19) outbreak, in Kathmandu, Nepal March 18, 2020.

Staff members of Japan Airlines and All Nippon Airways and runway crew wave as they see off the 'Tokyo 2020 Go' aircraft, before it departs for Greece, to transport the Olympic Flame back to Japan, at Haneda international airport in Tokyo, Japan March 18, 2020.

Shi'ite pilgrims make their way to Kadhimiya to mark the death of Imam Moussa al-Kadhim during a curfew imposed to prevent the spread of coronavirus disease (COVID-19), in Baghdad, Iraq March 18, 2020.

U.S. President Donald Trump pauses as he addresses the daily White House coronavirus response briefing with members of the administration's coronavirus task force at the White House in Washington, U.S., March 18, 2020.

Taxis are seen at a parking lot of Miami International airport as air traffic and the tourism industry are affected by the spread of the coronavirus disease (COVID-19), in Miami, Florida, U.S., March 18, 2020.

A man sits alone outside a pub on Carnaby Street, as the number of coronavirus (COVID-19) cases grow around the world, in London, Britain, March 17, 2020.

A customer pushes her trolley next to empty shelves at a Sainsbury's store in Harpenden as the spread of the coronavirus disease (COVID-19) continues, in Harpenden, Britain, March 18, 2020.

A woman runs alongs an empty street just before a curfew imposed to prevent the spread of coronavirus disease (COVID-19) in Belgrade, Serbia, March 18, 2020.

Volunteers search for people who need help on a flooded area after heavy rainfall in east Mosul, Iraq March 18, 2020.

Medical staff in protective gear wave from the Intensive Care Unit of La Paz Hospital, during a partial lockdown as part of a 15-day state of emergency to combat the coronavirus disease (COVID-19) outbreak in Madrid, Spain March 18, 2020.

A woman wears a protective face mask, due to the global coronavirus disease (COVID-19) outbreak, as she waits to get her change after buying fruits in Dakar, Senegal March 18,2020.

An airforce member is seen with a full cover mask as he sprays disinfectant inside a main railway station, as the number of people tested positive for coronavirus disease (COVID-19) in the country increased, in Colombo, Sri Lanka March 18, 2020.

Passengers wait aboard the cruise liner MV AidAmira as the ship sits at dock after it was quarantined due to the outbreak of coronavirus disease (COVID-19) in Cape Town, South Africa, March 18, 2020.

Brazil's Jair Bolsonaro adjusts his protective face mask during a news conference to announce measures to curb the spread of the coronavirus disease (COVID-19) in Brasilia, Brazil March 18, 2020.

People eat dinner in their car at Dick’s Drive-In as restaurants and bars are limited to take out and delivery service only amid the coronavirus (COVID-19) outbreak in Seattle, Washington, U.S., March 17, 2020.

Passengers are pictured inside a public bus during the outbreak of the coronavirus disease (COVID-19) in Rio de Janeiro, Brazil, March 18, 2020.

Tacos el Tajin food truck owner Tomas Lopez checks his watch at lunch time in the South Lake Union neighborhood, normally a busy area for Amazon and the biotech industry, as companies like Amazon instructed employees to work from home if they can during the coronavirus disease (COVID-19) outbreak, in Seattle, Washington, U.S. March 18, 2020.

Adolfo Lettieri, owner of a family-run tapestry shop, creates homemade masks that are distributed free to people who line up outside their small shop, following the coronavirus disease (COVID-19) outbreak, in the Tuscan city of Grosseto, Italy, March 17, 2020. Picture taken March 17, 2020.

Security personnel wearing face masks to contain the spread of coronavirus disease (COVID-19) walk along a street outside Forbidden City in Beijing, China March 18, 2020.

Clear water is seen in Venice's canals due to less tourists, motorboats and pollution, as the spread of the coronavirus disease (COVID-19) continues, in Venice, Italy, March 18, 2020

A trader reacts as he works on the floor of the New York Stock Exchange (NYSE) in New York, U.S., March 18, 2020.

A pedestrian walks on Wall St., as concerns about coronavirus disease (COVID-19) keep more people at home, in front of the New York Stock Exchange (NYSE) in New York, U.S., March 18, 2020.