The Latest: South Korea virus cases maintain downward trend

The remaining residents are evacuated from Freedom Square of Seminole, Friday, April 17, 2020. in Seminole, Fla. Three nursing home residents have died of the coronavirus in an outbreak that has afflicted Freedom Square of Seminole, a sprawling retirement community that has seen dozens of residents hospitalized because of the virus, officials said. (Dirk Shadd/Tampa Bay Times via AP)

Backdroped by closed shops, a man, wearing a mask as preventive measures against the spread of the coronavirus, walks at Eminonu Bazaar in Istanbul, Friday, April 17, 2020, just hours before the start of a two-day curfew declared by Turkey's goverrnment in an attempt to control the spread of coronavirus. (AP Photo/Emrah Gurel)

A worker rests outside the Manuel Belgrano public hospital on the outskirts of Buenos Aires, Argentina, Friday, April 17, 2020. Argentina confirmed a coronavirus outbreak at this hospital where people, including hospital staff, have tested positive, according to its director Nicolás Rodríguez. (AP Photo/Natacha Pisarenko)

A Thai family of four, wearing face masks travel in a motorbike in Bangkok, Thailand, Thursday, April 16, 2020. A month-long state of emergency remain enforced in Thailand to allow its government to impose stricter measures to control the coronavirus that has infected hundreds of people in the Southeast Asian country. (AP Photo/Gemunu Amarasinghe)

A man wearing a face mask to curb the spread of the new coronavirus sits at a bus stop, as another man walks past, in Niavaran in northern Tehran, Iran, Thursday, April 16, 2020. Authorities have canceled ceremonies marking the anniversary of the death of Ayatollah Khomeini, the founder of the Islamic Republic over COVID-19 disease concerns, which underscored Iranian officials' expectation that the virus crisis will continue for several more weeks. (AP Photo/Vahid Salemi)

Belarusian healthcare workers wearing face masks and costumes to protect from coronavirus stand outside a hospital in Minsk, Belarus, Tuesday, April 14, 2020. The highly contagious COVID-19 coronavirus pandemic is known to be a greater threat to the health of older people.(AP Photo/Sergei Grits)

A child walks on a track holding a doll as day laborers and informal workers who usually eke a living in Peru's capital congregate on the side of a highway as they are blocked from returning home by a cordon of police on the outskirts of Lima, Peru, Friday, April 17, 2020. Because the strict quarantine rules amid the new coronavirus pandemic do not allow for inter-province travel, the workers have been living on the side of the road for three days. (AP Photo/Martin Mejia)

People wait outside a federal revenue office in Rio de Janeiro, Brazil, early Friday, April 17, 2020. People begin lining up before dawn outside the office which doesn't open until 9 am, in hopes of fixing their taxpayer registration number which will allow them to receive emergency aid allotted by the federal government for the most vulnerable persons amid the new coronavirus pandemic. (AP Photo/Leo Correa)

A medical worker tests a young man for COVID-19 at a Children's National Hospital drive-through (drive-in) coronavirus testing site at Trinity University, Thursday, April 16, 2020, in Washington. (AP Photo/Andrew Harnik)

In this photo taken on Thursday, April 16, 2020, Sweden's Princess Sofia poses for the media next to registered nurse Gustav Westoo, on her first day at work at Sophiahemmet hospital, of which she is the patron, in Stockholm. The Princess has completed an intensive training program and will now be able to assist hospital staff with non-medical related tasks during the coronavirus pandemic. (Jonas Ekstromer/TT News Agency via AP)

A shopper wears a face mask as he queues at a supermarket due to the coronavirus related lockdown in London, Friday, April 17, 2020. The highly contagious COVID-19 coronavirus has impacted on nations around the globe, many imposing self isolation and exercising social distancing when people move from their homes.(AP Photo/Frank Augstein)

A volunteer of the Spanish NGO Open Arms pushes in a wheelchair an elderly resident of a nursing home with coronavirus symptoms to a Hospital in Barcelona, Spain, April 11, 2020. (AP Photo/Felipe Dana)

A woman wearing a face mask cries during her granddaughter Lucia's 12th birthday celebration while her parents are working, at her home during the lockdown to combat the spread of coronavirus in Grinon, Spain, Friday, April 17, 2020. Spain has eased this week the conditions of Europe's strictest lockdown, allowing manufacturing, construction and other nonessential activity in an attempt to cushion the economic impact of the pandemic. (AP Photo/Manu Fernandez)

A mock skeleton is attached to the fence as protesters gathered outside Minnesota Gov. Tim Walz' official residence Friday, April 17, 2020, in St. Paul, Minn., to call on him to loosen stay-at-home restrictions imposed across the state because of the coronavirus. The new coronavirus causes mild or moderate symptoms for most people, but for some, especially older adults and people with existing health problems, it can cause more severe illness or death. (AP Photo/Jim Mone)