A healthcare worker puts on a protective feet cover during a nationwide lockdown to slow the spreading of the coronavirus disease (COVID-19), in Mumbai, India, April 20, 2020. REUTERS/Francis Mascarenhas 

Teddy bears hang on a balcony during the lockdown amid the coronavirus disease (COVID-19) outbreak in Ronda, southern Spain, April 20, 2020. REUTERS/Jon Nazca 

People are reflected on a puddle of disinfecting liquid while garbage trucks (not pictured) ride past a disinfectant gate, placed at a parking lot for garbage trucks, following the outbreak of the coronavirus disease (COVID-19), in Santiago, Chile April 20, 2020. REUTERS/Ivan Alvarado 

Geese cross a road, during a countrywide lockdown to combat the spread of the coronavirus disease (COVID-19), in Marjayoun, southern Lebanon April 20, 2020. REUTERS/Aziz Taher REFILE - CORRECTING SPECIES 

Pigeons sit on a ledge at a dormitory block where migrant workers are serving their quarantine in their rooms, during the coronavirus outbreak (COVID-19) in Singapore April 20, 2020. REUTERS/Edgar Su 

A sign has been modified to read "I will be grateful for Covid ending" amid the coronavirus disease (COVID-19) outbreak in Brattleboro, Vermont, U.S., April 19, 2020. REUTERS/Brian Snyder 

A sign has been modified to read "I will be grateful for Covid ending" amid the coronavirus disease (COVID-19) outbreak in Brattleboro, Vermont, U.S., April 19, 2020. REUTERS/Brian Snyder 

A person holds a sign referencing high unemployment as hundreds gather to protest against the state's extended stay-at-home order to help slow the spread of the coronavirus disease (COVID-19) at the Capitol building in Olympia, Washington, U.S. April 19, 2020. REUTERS/Lindsey Wasson 

Pebble sculptures are seen on Whitley Bay beach, as the spread of the coronavirus disease (COVID-19) continues, Whitley Bay, Britain, April 19, 2020. REUTERS/Lee Smith 

Pebble sculptures are seen on Whitley Bay beach, as the spread of the coronavirus disease (COVID-19) continues, Whitley Bay, Britain, April 19, 2020. REUTERS/Lee Smith 

Subway seats are marked for social distancing during the coronavirus disease (COVID-19) restrictions in Toronto, Ontario, Canada April 18, 2020. REUTERS/Chris Helgren 

Rotten eggplants are seen in the ground after being harvested by farmers and discarded due to the lack of demand in the market, as the spread of the coronavirus disease (COVID-19) continues, in Homestead, Florida, U.S., April 17, 2020. REUTERS/Marco Bello 

Rotten eggplants are seen in the ground after being harvested by farmers and discarded due to the lack of demand in the market, as the spread of the coronavirus disease (COVID-19) continues, in Homestead, Florida, U.S., April 17, 2020. REUTERS/Marco Bello 

Rotten eggplants are seen in the ground after being harvested by farmers and discarded due to the lack of demand in the market, as the spread of the coronavirus disease (COVID-19) continues, in Homestead, Florida, U.S., April 17, 2020. REUTERS/Marco Bello 

Eggplant bushes are seen after being cut by a farm tractor due to the lack of demand in the market, as the spread of the coronavirus disease (COVID-19) continues, in Homestead, Florida, U.S., April 17, 2020. REUTERS/Marco Bello 

Rotten eggplants are seen in the ground after being harvested by farmers and discarded due to the lack of demand in the market, as the spread of the coronavirus disease (COVID-19) continues, in Homestead, Florida, U.S., April 17, 2020. REUTERS/Marco Bello 

Rotten eggplants are seen in the ground after being harvested by farmers and discarded due to the lack of demand in the market, as the spread of the coronavirus disease (COVID-19) continues, in Homestead, Florida, U.S., April 17, 2020. REUTERS/Marco Bello 

Agricultural workers operate tractors with seeders to sow soybeans in the field near the village of Husachivka in Kiev region, Ukraine April 17, 2020. REUTERS/Anton Muraviov 

Agricultural workers operate tractors with seeders to sow soybeans in the field near the village of Husachivka in Kiev region, Ukraine April 17, 2020. REUTERS/Anton Muraviov 

Agricultural workers operate tractors with seeders to sow soybeans in the field near the village of Husachivka in Kiev region, Ukraine April 17, 2020. REUTERS/Anton Muraviov 

Shoes and sandals are seen at apartment doors in a residential building during the coronavirus disease (COVID-19) outbreak, in Rio de Janeiro, Brazil April 17, 2020. REUTERS/Sergio Moraes 

Black-crowned night herons are pictured in Ammiq Wetland, in Lebanon's eastern Bekaa valley, Lebanon April 14, 2020. Picture taken April 14, 2020. REUTERS/Ali Hashisho 

Black-crowned night herons are pictured in Ammiq Wetland, in Lebanon's eastern Bekaa valley, Lebanon April 14, 2020. Picture taken April 14, 2020. REUTERS/Ali Hashisho 

A view from Ammiq Wetland, in Lebanon's eastern Bekaa valley, Lebanon April 14, 2020. Picture taken April 14, 2020. REUTERS/Ali Hashisho 

A flock of sheep grazes on a field during the coronavirus disease (COVID-19) outbreak in Bercial, Spain, April 16, 2020. Picture taken April 16, 2020. REUTERS/Juan Medina 

A Spanish mastiff watches over a flock of sheep during the coronavirus disease (COVID-19) outbreak in Bercial, Spain, April 16, 2020. Picture taken April 16, 2020. REUTERS/Juan Medina 

A flock of sheep is seen during the coronavirus disease (COVID-19) outbreak in Bercial, Spain, April 16, 2020. Picture taken April 16, 2020. REUTERS/Juan Medina 

A flock of sheep grazes on a field during the coronavirus disease (COVID-19) outbreak in Bercial, Spain, April 14, 2020. Picture taken April 14, 2020. REUTERS/Juan Medina 

A flock of sheep grazes on a field during the coronavirus disease (COVID-19) outbreak in Bercial, Spain, April 16, 2020. Picture taken April 16, 2020. REUTERS/Juan Medina 

A flock of sheep are seen in a farmyard during the coronavirus disease (COVID-19) outbreak in Bercial, Spain, April 16, 2020. Picture taken April 16, 2020. REUTERS/Juan Medina 

A flock of sheep grazes on a field during the coronavirus disease (COVID-19) outbreak in Bercial, Spain, April 16, 2020. Picture taken April 16, 2020. REUTERS/Juan Medina 

Empty chairs are placed at the Neumarkt square to call attention to the difficult situation of hotel and restaurant owners, as the spread of the coronavirus disease (COVID-19) continues in Dresden, Germany, April 17, 2020. The sign reads "closed today because of yesterday". REUTERS/Matthias Rietschel 

A bloom of wild poppies on an Amador County hillside during the coronavirus disease (COVID-19) outbreak in Jackson, California, U.S. April 16, 2020. REUTERS/Kate Munsch 

A bloom of wild poppies on an Amador County hillside during the coronavirus disease (COVID-19) outbreak in Jackson, California, U.S. April 16, 2020. REUTERS/Kate Munsch 

Tulips bloom on a field during the spread of the coronavirus disease (COVID-19) in Grevenbroich, Germany, April 16, 2020. REUTERS/Thilo Schmuelgen 

People walk on a field with blooming Tulips during the spread of the coronavirus disease (COVID-19) in Grevenbroich, Germany, April 16, 2020. REUTERS/Thilo Schmuelgen 

People pose for a picture on a field with blooming Tulips during the spread of the coronavirus disease (COVID-19) in Grevenbroich, Germany, April 16, 2020. REUTERS/Thilo Schmuelgen 

An aerial view of tulip fields during the spread of the coronavirus disease (COVID-19) in Gruissem near Holzheim, Germany, April 15, 2020. Picture taken with a drone, April 15, 2020. REUTERS/Stephane Nitschke 

An aerial view of tulip fields during the spread of the coronavirus disease (COVID-19) in Gruissem near Holzheim, Germany, April 15, 2020. Picture taken with a drone, April 15, 2020. REUTERS/Stephane Nitschke 

An aerial view of tulip fields during the spread of the coronavirus disease (COVID-19) in Gruissem near Holzheim, Germany, April 15, 2020. Picture taken with a drone, April 15, 2020. REUTERS/Stephane Nitschke 

An aerial view of tulip fields during the spread of the coronavirus disease (COVID-19) in Gruissem near Holzheim, Germany, April 15, 2020. Picture taken with a drone, April 15, 2020. REUTERS/Stephane Nitschke 

An aerial view of tulip fields during the spread of the coronavirus disease (COVID-19) in Gruissem near Holzheim, Germany, April 15, 2020. Picture taken with a drone, April 15, 2020. REUTERS/Stephane Nitschke 

An aerial view of tulip fields during the spread of the coronavirus disease (COVID-19) in Gruissem near Holzheim, Germany, April 15, 2020. Picture taken with a drone, April 15, 2020. REUTERS/Stephane Nitschke 

An aerial view of tulip fields during the spread of the coronavirus disease (COVID-19) in Gruissem near Holzheim, Germany, April 15, 2020. Picture taken with a drone, April 15, 2020. REUTERS/Stephane Nitschke 

An aerial view of tulip fields during the spread of the coronavirus disease (COVID-19), in Gruissem near Holzheim, Germany, April 15, 2020. Picture taken with a drone, April 15, 2020. REUTERS/Stephane Nitschke 

People cross a near-empty street after the government announced a state of emergency for the capital and some prefectures following the coronavirus disease (COVID-19) outbreak, in Tokyo, Japan April 16, 2020. REUTERS/Kim Kyung-Hoon 

Uninstalled sinks are seen outside a pavilion at the Corferias convention centre, where a temporary hospital for low-risk patients is being built, amid the coronavirus disease (COVID-19) outbreak in Bogota, Colombia April 15, 2020. REUTERS/Luisa Gonzalez 

A passenger receives a mask for mandatory use from next Friday onwards, inside any subway station, as a measure to contain the spread of the coronavirus disease (COVID-19), in Mexico City, Mexico April 15, 2020. REUTERS/ Edgard Garrido 

Oxygen cylinders are pictured at an out-of-order oxygen plant of a hospital allocated for the coronavirus patients in preparation for any possible spread of the coronavirus disease (COVID-19), in Sanaa, Yemen April 8, 2020. Picture taken April 8, 2020. REUTERS/Khaled Abdullah 

A Palestinian man puts final touches on a cake shaped likes an emoji with a microscopic view of the coronavirus, amid concerns about the spread of the disease, in a bakery in the southern Gaza Strip April 14, 2020. REUTERS/Ibraheem Abu Mustafa 

Beach chairs lie piled up on a deserted of people Camps Bay beach, closed during the 21-day nationwide lockdown aimed at limiting the spread of the coronavirus disease (COVID-19), in Cape Town, South Africa April 14, 2020. REUTERS/Mike Hutchings 

Empty seats are seen at Hua Lamphong train station in Songkran holiday which marks the Thai New Year during the coronavirus disease (COVID-19) outbreak, in Bangkok, Thailand, April 14, 2020. REUTERS/Jorge Silva 

Empty seats are seen at Hua Lamphong train station in Songkran holiday which marks the Thai New Year during the coronavirus disease (COVID-19) outbreak, in Bangkok, Thailand, April 14, 2020. REUTERS/Jorge Silva 

Sheep are seen at Sycamore Gap, as the spread of the coronavirus disease (COVID-19) continues, Bardon Mill, Britain, April 13, 2020. REUTERS/Lee Smith 

A pigeons fly in front of the Duomo Cathedral, amidst the coronavirus disease (COVID-19) spread, on Easter Sunday, in Milan, Italy, April 12, 2020. REUTERS/Flavio Lo Scalzo 

Police officers stand guard while patrolling streets amid the coronavirus disease (COVID-19) outbreak in central Moscow, Russia April 12, 2020. REUTERS/Maxim Shemetov 

Crosses are seen outside of a church, as each cross represents one life lost to coronavirus disease (COVID-19) in the state of Louisiana, in Baton Rouge, Louisiana U.S., April 10, 2020. REUTERS/Carlos Barria 

Crosses are seen outside of a church, as each cross represents one life lost to coronavirus disease (COVID-19) in the state of Louisiana, in Baton Rouge, Louisiana U.S., April 10, 2020. REUTERS/Carlos Barria 

Crosses are seen outside of a church, as each cross represents one life lost to coronavirus disease (COVID-19) in the state of Louisiana, in Baton Rouge, Louisiana U.S., April 10, 2020. REUTERS/Carlos Barria 

Palestinians enjoy the sunset on a beach amid concerns about the spread of the coronavirus disease (COVID-19), in the northern Gaza Strip April 10, 2020. REUTERS/Mohammed Salem