A passenger has his temperature checked as a precaution against a new coronavirus before boarding a flight to Vladivostok, Russia, at the Pyongyang International Airport in Pyongyang, North Korea, Monday, March 9, 2020. (AP Photo/Jon Chol Jin)

Passengers look out from balconies aboard the Grand Princess as it cruises a holding pattern about 25 miles off the coast of San Francisco on Sunday, March 8, 2020. The ship is expected to dock in Oakland in the east San Francisco Bay on Monday. California Gov. Gavin Newsom and the mayor of Oakland sought Sunday to reassure the public that none of the passengers from the ship with multiple cases of the new coronavirus will be released into the public before undergoing a 14-day quarantine. (AP Photo/Noah Berger)

Iraqi workers spray disinfectant as a precaution against the coronavirus in the shrine of Imam Ali in Najaf, Iraq, Sunday, March 8, 2020. (AP Photo/Anmar Khalil)

Passengers wearing masks as a precaution against a new coronavirus line up to check in for a flight to Vladivostok, Russia, at the Pyongyang International Airport in Pyongyang, North Korea, Monday, March 9, 2020. (AP Photo/Jon Chol Jin)

A view of the empty Juventus stadium, as a measure against coronavirus contagion, prior to the Serie A soccer match between Juventus and Inter, in Turin, Italy, Sunday, March 8, 2020. Serie A played on Sunday despite calls from Italy’s sports minister and players’ association president to suspend the games in Italy’s top soccer division. (Marco Alpozzi/LaPresse via AP)

South Korean army soldiers spray disinfectant as a precaution against a new coronavirus on a street in Seoul, South Korea, Monday, March 9, 2020. (AP Photo/Ahn Young-joon)

The Navigli district of Milan, one of the area of night life in Milan, is almost deserted after most bars were closed by the last decisions of the government trying to face the coronavirus emergency, in Milan, Sunday, March 8, 2020. (Claudio Furlan/LaPresse via AP)

Carrying multiple people who have tested positive for COVID-19, the Grand Princess maintains a holding pattern about 30 miles off the coast of San Francisco, Sunday, March 8, 2020. The cruise ship is scheduled to dock at the Port of Oakland on Monday. (AP Photo/Noah Berger)

The Colosseum, that will be closed following the government's new prevention measures on public gatherings, is reflected in a puddle where a face mask was left, in Rome, Sunday, March 8, 2020. Italy announced a sweeping quarantine early Sunday for its northern regions, igniting travel chaos as it restricted the movements of a quarter of its population in a bid to halt the new coronavirus' relentless march across Europe. (Alfredo Falcone/LaPresse via AP)

A woman wearing a mask as a precaution against a new coronavirus passes by a worker cleaning escalator handrails at a business building in Tokyo Monday, March 9, 2020. (AP Photo/Eugene Hoshiko)

Passengers wearing masks as a precaution against a new coronavirus stand before boarding a flight to Vladivostok, Russia, at the Pyongyang International Airport in Pyongyang, North Korea, Monday, March 9, 2020. (AP Photo/Cha Song Ho)