A surgical mask is placed on The "Fearless Girl" statue outside the New York Stock Exchange, in New York Cty, March 19, 2020. (AP Photo/Kevin Hagen)
The Christ the Redeemer statue is lit up in the colors of the countries that are affected by the coronavirus outbreak in Rio de Janeiro, March 18, 2020. (REUTERS/Sergio Moraes)
The Washington Monument and the U.S. Capitol are seen at sunrise in Washington, March 18, 2020. (AP Photo/Carolyn Kaster)
The sun sets behind the FAA Control Tower at Midway International Airport in Chicago, March 17, 2020. (AP Photo/Charles Rex Arbogast)
The skyline of midtown Manhattan glows in gold as the sun sets in New York City, March 15, 2020. (FOX News/Gary Hershorn)
A man stands in front of the skyline from Bernal Heights Hill in San Francisco, March 16, 2020. (AP Photo/Jeff Chiu)
With the Washington Monument in the background, people run by cherry blossoms at the Tidal Basin, in Washington, March 18, 2020. (AP Photo/Andrew Harnik)
People play soccer at the Mediterranean Sea beachfront, in Tel Aviv, Israel, March 16, 2020. (AP Photo/Oded Balilty)
Former Vice President Joe Biden and Sen. Bernie Sanders greet one another before they participate in a Democratic presidential primary debate in Washington, March 15, 2020. (AP Photo/Evan Vucci)
Reporters raise their hands to ask President Donald Trump questions during a press briefing with the coronavirus task force, at the White House, in Washington, March 16, 2020. (AP Photo/Evan Vucci)
A police officer walks in the empty Trocadero square, in Paris, March 18, 2020. (AP Photo/Thibault Camus)
An empty Times Square is seen following the outbreak of coronavirus in New York City, March 18, 2020. (REUTERS/Jeenah Moon )
A man wearing a face mask walks down the stairs at Dongdaemun Design Plaza in Seoul, South Korea, March 19, 2020. (AP Photo/Lee Jin-man)
A man wears a mask during a rally supporting Brazil's President Jair Bolsonaro on Copacabana beach, Rio de Janeiro, March 15, 2020. (AP Photo/Silvia Izquierdo)
A vehicle approaches the only open lane at the United States border crossing in Lacolle, Quebec, March 18, 2020. (Ryan Remiorz/The Canadian Press via AP)
A police officer speaks to a car driver in Paris, March 17, 2020. (AP Photo/Christophe Ena)
A person is taken on a stretcher into the United Memorial Medical Center after going through testing for COVID-19 in Houston, March 19, 2020. (AP Photo/David J. Phillip)
Undertakers carry a coffin out of a hearse at Bergamo's cemetery in northern Italy, March 16, 2020. (Claudio Furlan/LaPresse via AP)
Visitors enjoy Clearwater Beach in Clearwater Beach, Florida, March 18, 2020. (AP Photo/Chris O'Meara)