LISBON, PORTUGAL - APRIL 02: A view of deserted Marqu???s de Pombal, in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of deserted Jernimos Monastery in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures.. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of deserted Subway station, in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of deserted Subway, in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A pigeon is seen standing near the train in a deserted Subway station, in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of deserted Rossio square, in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of deserted Rossio square, in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of deserted Rossio square, in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of deserted Rua Augusta, in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of deserted Rossio square, in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of a deserted street, in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of deserted Rua Augusta, in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of deserted Rua Augusta, in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of deserted Terreiro do Pa???o, in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of deserted Cais das Colunas, in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of deserted Terreiro do Pa???o, in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of desertedCais das Colunas, in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of desertedCais das Colunas, in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of deserted Terreiro do Pa???o in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of deserted Terreiro do Pa???o in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of deserted Restauradores Square in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of deserted Terreiro do Pa???o in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of empty Restauradores Square in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of deserted Restauradores Square in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of deserted Belem Tower in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures.. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of deserted Belem Tower in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures.. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of deserted Belem Tower in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures.. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of deserted Jernimos Monastery in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures.. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of deserted Jernimos Monastery in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures.. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of deserted Pasteis de Belem in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of deserted Jernimos Monastery in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures.. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of empty Avenida da Liberdade in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of deserted Rossio square, in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of deserted Terreiro do Pa???o, in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of deserted Terreiro do Pa???o, in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of deserted Terreiro do Pa???o, in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures. Sara Matos / Anadolu Agency/ABACAPRESS.COM

LISBON, PORTUGAL - APRIL 02: A view of deserted Restauradores square, in Lisbon, Portugal on April 02, 2020. Portugal is in a state of emergency as part of coronavirus (COVID-19) measures. Sara Matos / Anadolu Agency/ABACAPRESS.COM

Portuguese Prime Minister Antonio Costa visits a Military Support hospital for coronavirus patiens in Lisbon on March 30, 2020. - Portugal declared a nationwide 15-day state of emergency on March 18, 2020 to fight the spread of coronavirus. (Photo by CARLOS COSTA / AFP)

Portuguese Prime Minister Antonio Costa visits a Military Support hospital for coronavirus patients in Lisbon on March 30, 2020. - Portugal declared a nationwide 15-day state of emergency on March 18, 2020 to fight the spread of coronavirus. (Photo by CARLOS COSTA / AFP)

Portuguese Prime Minister Antonio Costa visits a Hospital Support Unit for coronavirus patients in Lisbon on March 30, 2020. - Portugal declared a nationwide 15-day state of emergency on March 18, 2020 to fight the spread of coronavirus. (Photo by CARLOS COSTA / AFP)

Portuguese Prime Minister Antonio Costa visits a Hospital Support Unit for coronavirus patients in Lisbon on March 30, 2020. - Portugal declared a nationwide 15-day state of emergency on March 18, 2020 to fight the spread of coronavirus. (Photo by CARLOS COSTA / AFP)

Portuguese Prime Minister Antonio Costa (C) talks to the press during a visit to a Hospital Support Unit for coronavirus patients in Lisbon on March 30, 2020. - Portugal declared a nationwide 15-day state of emergency on March 18, 2020 to fight the spread of coronavirus. (Photo by CARLOS COSTA / AFP)

Beds are set-up at a Hospital Support Unit for coronavirus patients in Lisbon on March 30, 2020. - Portugal declared a nationwide 15-day state of emergency on March 18, 2020 to fight the spread of coronavirus. (Photo by CARLOS COSTA / AFP)

Beds are set-up at a Hospital Support Unit for coronavirus patients in Lisbon on March 30, 2020. - Portugal declared a nationwide 15-day state of emergency on March 18, 2020 to fight the spread of coronavirus. (Photo by CARLOS COSTA / AFP)

Beds are set-up at a Hospital Support Unit for coronavirus patients in Lisbon on March 30, 2020. - Portugal declared a nationwide 15-day state of emergency on March 18, 2020 to fight the spread of coronavirus. (Photo by CARLOS COSTA / AFP)

Beds are set-up at a Hospital Support Unit for coronavirus patients in Lisbon on March 30, 2020. - Portugal declared a nationwide 15-day state of emergency on March 18, 2020 to fight the spread of coronavirus. (Photo by CARLOS COSTA / AFP)

Beds are set-up at a Hospital Support Unit for coronavirus patients in Lisbon on March 30, 2020. - Portugal declared a nationwide 15-day state of emergency on March 18, 2020 to fight the spread of coronavirus. (Photo by CARLOS COSTA / AFP)

Portuguese Prime Minister Antonio Costa (L) visits a Hospital Support Unit for coronavirus patients in Lisbon on March 30, 2020. - Portugal declared a nationwide 15-day state of emergency on March 18, 2020 to fight the spread of coronavirus. (Photo by CARLOS COSTA / AFP)

200325 -- LISBON, March 25, 2020 -- Medical workers work at a COVID-19 drive-through screening center in Lisbon, Portugal, on March 24, 2020. COVID-19, caused by the novel coronavirus, has infected 2,362 people and killed 33 in Portugal, according to the latest from the health authorities. Photo by /Xinhua PORTUGAL-LISBON-DRIVE THROUGH-SCREENING CENTER PedroxFiuza PUBLICATIONxNOTxINxCHN

200325 -- LISBON, March 25, 2020 -- Medical workers work at a COVID-19 drive-through screening center in Lisbon, Portugal, on March 24, 2020. COVID-19, caused by the novel coronavirus, has infected 2,362 people and killed 33 in Portugal, according to the latest from the health authorities. Photo by /Xinhua PORTUGAL-LISBON-DRIVE THROUGH-SCREENING CENTER PedroxFiuza PUBLICATIONxNOTxINxCHN

200325 -- LISBON, March 25, 2020 -- Medical workers work at a COVID-19 drive-through screening center in Lisbon, Portugal, on March 24, 2020. COVID-19, caused by the novel coronavirus, has infected 2,362 people and killed 33 in Portugal, according to the latest from the health authorities. Photo by /Xinhua PORTUGAL-LISBON-DRIVE THROUGH-SCREENING CENTER PedroxFiuza PUBLICATIONxNOTxINxCHN

200325 -- LISBON, March 25, 2020 -- Photo taken on March 24, 2020 shows a COVID-19 drive-through screening center in Lisbon, Portugal. COVID-19, caused by the novel coronavirus, has infected 2,362 people and killed 33 in Portugal, according to the latest from the health authorities. Photo by /Xinhua PORTUGAL-LISBON-DRIVE THROUGH-SCREENING CENTER PedroxFiuza PUBLICATIONxNOTxINxCHN

200325 -- LISBON, March 25, 2020 -- A coronavirus prevention sign is displayed on a screen at a street in Lisbon, Portugal on March 24, 2020. COVID-19, caused by the novel coronavirus, has infected 2,362 people and killed 33 in Portugal, according to the latest from the health authorities. Photo by /Xinhua PORTUGAL-LISBON-COVID-19 PedroxFiuza PUBLICATIONxNOTxINxCHN

200325 -- LISBON, March 25, 2020 -- A medical worker works at a COVID-19 drive-through screening center in Lisbon, Portugal, on March 24, 2020. COVID-19, caused by the novel coronavirus, has infected 2,362 people and killed 33 in Portugal, according to the latest from the health authorities. Photo by /Xinhua PORTUGAL-LISBON-DRIVE THROUGH-SCREENING CENTER PedroxFiuza PUBLICATIONxNOTxINxCHN

200325 -- LISBON, March 25, 2020 -- Aircrafts of TAP Air Portugal sit on the Humberto Delgado Airport amid the spread of COVID-19, in Lisbon, Portugal on March 24, 2020. COVID-19, caused by the novel coronavirus, has infected 2,362 people and killed 33 in Portugal, according to the latest from the health authorities. Photo by /Xinhua PORTUGAL-LISBON-COVID-19 PedroxFiuza PUBLICATIONxNOTxINxCHN