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 Pedro Fiuza/Xinhua)

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 Pedro Fiuza/Xinhua)

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 Pedro Fiuza/Xinhua)

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 Pedro Fiuza/Xinhua)