U.S. President Donald Trump participates in a round of golf amid the coronavirus disease (COVID-19) outbreak, in Sterling, Virginia, U.S., May 24, 2020.

Pupils, wearing protective masks, attend courses at the Merlan school of Paillet during the reopening of schools, as the lockdown due to coronavirus disease (COVID-19) is eased, in Abidjan, Ivory Coast May 25, 2020.

Thai Airways idle airplanes are seen parked on the tarmac of Suvarnabhumi Airport in Bangkok, Thailand May 25, 2020. Image used for illustrative purpose.

Stones decorated with messages are arranged in the shape of a heart at a Memorial Day display on Boston Common amid the coronavirus disease (COVID-19) outbreak in Boston, Massachusetts, U.S., May 25, 2020.

Nathalie, with her dog Valco, kisses her husband Joseph behind a transparent plastic sheet inside a bubble room installed to visit residents in the garden of the Fondation Shadet Vercoustre retirement home (Ehpad - Housing Establishment for Dependant Elderly People) in Bourbourg near Dunkirk, amid the coronavirus disease (COVID-19) outbreak in France, May 25, 2020.

People are seen on the beach in Southend following the outbreak of the coronavirus disease (COVID-19), Southend, Britain, May 25, 2020.

Muslim boys look out from the window of their house during Eid al-Fitr, the Muslim festival marking the end of the holy fasting month of Ramadan, amid the spread of the coronavirus disease (COVID-19), in the old quarters of Delhi, India, May 25, 2020.

Democratic U.S. presidential candidate and former Vice President Joe Biden is seen at War Memorial Plaza during Memorial Day, amid the outbreak of the coronavirus disease (COVID-19), in New Castle, Delaware, U.S. May 25, 2020.

Staff members from La Paz hospital attend a protest to ask for more health personnel in hospitals, primary care and nursing homes, amid the coronavirus disease (COVID-19) outbreak in Madrid, Spain, May 25, 2020.

A general view of the almost empty "Valley of Peace" cemetery, during Eid al-Fitr, after coronavirus disease (COVID-19) lockdown measures were partially eased, in the holy city of Najaf, Iraq May 25, 2020.

Relatives comfort each other as they mourn the death of Simon Eric, who was killed in a plane crash, during his burial at the Christian's Gora Cemetery in Karachi, Pakistan May 25, 2020.

A child picks up flowers in a poppy field in Aubigny-au-Bac, near Cambrai, France May 25, 2020.

U.S. President Donald Trump reaches out and touches a wreath during ceremonies at the Tomb of the Unknown Soldier in commemoration of the Memorial Day holiday at Arlington National Cemetery outside of Washington in Arlington, Virginia, U.S., May 25, 2020.

A member of the Central Industrial Security Force (CISF) talks with a passenger through a glass shield, after the government allowed domestic flight services to resume, during an extended nationwide lockdown to slow the spread of the coronavirus disease (COVID-19), at Indira Gandhi International (IGI) airport, in New Delhi, India, May 25, 2020.

The Madonnina, a statue of the Virgin Mary atop Duomo cathedral, is seen during a performance of the Frecce Tricolori of the Italian Air Force as they perform to show unity and solidarity following the outbreak of the coronavirus disease (COVID-19), in Milan, Italy, May 25, 2020.

New York Governor Andrew Cuomo wearing a protective mask participates during the Memorial day ceremony at the Intrepid Sea, Air & Space Museum following the outbreak of the coronavirus disease (COVID-19) in New York U.S., May 25, 2020.

Dominic Cummings, special advisor for Britain's Prime Minister Boris Johnson reacts as he arrives at his house in London following the outbreak of the coronavirus disease (COVID-19), London, Britain, May 25, 2020.

Dominic Cummings, special advisor for Britain's Prime Minister Boris Johnson, makes a statement at 10 Downing Street, following the outbreak of the coronavirus disease (COVID-19), London, Britain, May 25, 2020. Jonathan Brady/Pool via REUTERS

Children return to campus for the first day of New South Wales public schools fully re-opening for all students and staff amidst the easing of the coronavirus disease (COVID-19) restrictions at Homebush West Public School in Sydney, Australia, May 25, 2020.

A couple share a kiss inside a train, after the city metro was reopened as part of another stage to ease the coronavirus disease (COVID-19) restrictions in Kiev, Ukraine May 25, 2020.

Giraffes cross under the bridge of the Standard Gauge Railway (SGR) line inside the Nairobi National Park in Nairobi, Kenya, May 25, 2020.

People from a poor neighborhood shout slogans as they protest to request food parcels from the government during a general quarantine amid the spread of the coronavirus disease (COVID-19) at 'Puente Alto' area in Santiago, Chile May 25, 2020.

Attendants wearing face masks following the coronavirus disease (COVID-19) outbreak are seen before the second plenary session of the National People's Congress (NPC) at the Great Hall of the People in Beijing, China May 25, 2020.

A motorist arranges fruits and vegetables for sale next to her vehicle, as an alternative mobile grocery stall, along the highway, following a lockdown due to the coronavirus disease (COVID-19) outbreak, on the outskirts of Nairobi, Kenya May 25, 2020.

A volunteer fireman for the Manhasset-Lakeville Fire Department stands wearing a mask as the coronavirus disease (COVID-19) outbreak continues, during a Memorial Day event in Manhasset ,New York, U.S., May 25, 2020.

P.J. Simonis with his falcon Betty patrol the boardwalk after the coronavirus disease (COVID-19) restrictions were lifted in time for the Memorial Day weekend, in Ocean City, New Jersey, U.S. May 25, 2020. Mr. Simonis is hired by the city to help control seagulls on the boardwalk by flying his raptors.