Vice-President of the European Commission in charge of promoting the European Way of Life Margaritis Schinas (L), and Cypriot Stella Kriakides, European Commissioner for Health and Food Safety, speak to the press on the health programme "EU4Health" at the European Commission headquarters in Brussels, Belgium May 28, 2020. Aris Oikonomou/Pool via REUTERS

Vice-President of the European Commission in charge of promoting the European Way of Life Margaritis Schinas speaks to the press on the health programme "EU4Health" at the European Commission headquarters in Brussels, Belgium May 28, 2020. Aris Oikonomou/Pool via REUTERS

Vice-President of the European Commission in charge of promoting the European Way of Life Margaritis Schinas speaks to the press on the health programme "EU4Health" at the European Commission headquarters in Brussels, Belgium May 28, 2020. Aris Oikonomou/Pool via REUTERS

Vice-President of the European Commission in charge of promoting the European Way of Life Margaritis Schinas speaks to the press on the health programme "EU4Health" at the European Commission headquarters in Brussels, Belgium May 28, 2020. Aris Oikonomou/Pool via REUTERS

Vice-President of the European Commission in charge of promoting the European Way of Life Margaritis Schinas speaks to the press on the health programme "EU4Health" at the European Commission headquarters in Brussels, Belgium May 28, 2020. Aris Oikonomou/Pool via REUTERS

Vice-President of the European Commission in charge of promoting the European Way of Life Margaritis Schinas speaks to the press on the health programme "EU4Health" at the European Commission headquarters in Brussels, Belgium May 28, 2020. Aris Oikonomou/Pool via REUTERS

Vice-President of the European Commission in charge of promoting the European Way of Life Margaritis Schinas speaks to the press on the health programme "EU4Health" at the European Commission headquarters in Brussels, Belgium May 28, 2020. Aris Oikonomou/Pool via REUTERS

Vice-President of the European Commission in charge of promoting the European Way of Life Margaritis Schinas (L), and Cypriot Stella Kriakides, European Commissioner for Health and Food Safety, speak to the press on the health programme "EU4Health" at the European Commission headquarters in Brussels, Belgium May 28, 2020. Aris Oikonomou/Pool via REUTERS

Vice-President of the European Commission in charge of promoting the European Way of Life Margaritis Schinas (L), and Cypriot Stella Kriakides, European Commissioner for Health and Food Safety, speak to the press on the health programme "EU4Health" at the European Commission headquarters in Brussels, Belgium May 28, 2020. Aris Oikonomou/Pool via REUTERS

Vice-President of the European Commission in charge of promoting the European Way of Life Margaritis Schinas (L), and Cypriot Stella Kriakides, European Commissioner for Health and Food Safety, speak to the press on the health programme "EU4Health" at the European Commission headquarters in Brussels, Belgium May 28, 2020. Aris Oikonomou/Pool via REUTERS

A sign promoting social distance is seen as people enjoy the day at Ocean Grove beach on the first day that New Jersey beaches were opened ahead of the Memorial Day weekend following the outbreak of the coronavirus disease (COVID-19) in Ocean Grove, New Jersey, U.S., May 22, 2020. REUTERS/Eduardo Munoz

A person sits on an open bench amongst others fenced-off to promote social distancing on the boardwalk at Long Beach on the first day that New York beaches were opened ahead of the Memorial Day weekend following the outbreak of the coronavirus disease (COVID-19) on Long Island, New York, U.S., May 22, 2020. REUTERS/Andrew Kelly

A man reads amongst a row of benches closed off to promote social distancing at Long Beach on the first day that New York beaches were opened ahead of the Memorial Day weekend following the outbreak of the coronavirus disease (COVID-19) on Long Island, New York, U.S., May 22, 2020. REUTERS/Andrew Kelly TPX IMAGES OF THE DAY

A person stretches amongst a row of benches blocked off to promote social distancing on the Long Beach boardwalk on the first day that New York beaches were opened ahead of the Memorial Day weekend following the outbreak of the coronavirus disease (COVID-19) on Long Island, New York, U.S., May 22, 2020. REUTERS/Andrew Kelly

A boy stand in front of a graffiti promoting the fight against the coronavirus disease (COVID-19) in the Mathare slums of Nairobi, Kenya, May 22, 2020. REUTERS/Baz Ratner

A boy walks in front of a graffiti promoting the fight against the coronavirus disease (COVID-19) in the Mathare slums of Nairobi, Kenya, May 22, 2020. REUTERS/Baz Ratner TPX IMAGES OF THE DAY

A woman walks past a graffiti promoting the fight against the spread of the coronavirus disease (COVID-19) in the Kibera slums of Nairobi, Kenya, May 22, 2020. REUTERS/Baz Ratner

Dr Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases arrives with U.S. Army General Gustave Perna, who will serve as COO of a new coronavirus disease (COVID-19) vaccine research initiative before an event held by President Donald Trump to promote the administration's efforts to develop a vaccine in the Rose Garden at the White House in Washington, U.S., May 15, 2020. REUTERS/Kevin Lamarque

General Mark Mille­y, chair­man of the U.S. Joint Chief­s of Staff, Dr Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, U.S. Army General Gustave Perna, who will serve as COO of a new coronavirus disease (COVID-19) vaccine research initiative and Moncef Slaoui, who will serve as chief adviser on the effort, arrive for an event held by President Donald Trump to promote the administration's efforts to develop a vaccine in the Rose Garden at the White House in Washington, U.S., May 15, 2020. REUTERS/Kevin Lamarque

Head of the Ile de France regional council Valerie Pecresse, mayor of Evry-Courcouronnes Stephane Baudet and French Minister for Ecological and Inclusive Transition Elisabeth Borne walk during an event to promote the use of bicycles in Evry-Courcouronnes, south of Paris, France May 14, 2020. Christophe Ena/Pool via REUTERS

Workers prepare marks for new bicycle lanes during an event to promote the use of bicycles in Evry-Courcouronnes, south of Paris, France May 14, 2020. Christophe Ena/Pool via REUTERS

Head of the Ile de France regional council Valerie Pecresse and French Minister for Ecological and Inclusive Transition Elisabeth Borneattend attend an event to promote the use of bicycles in Evry-Courcouronnes, south of Paris, France May 14, 2020. Christophe Ena/Pool via REUTERS

French Minister for Ecological and Inclusive Transition Elisabeth Borne reacts after spraying yellow paint on a mark for new bicycle lanes during an event to promote the use of bicycles in Evry-Courcouronnes, south of Paris, France May 14, 2020. Christophe Ena/Pool via REUTERS

French Minister for Ecological and Inclusive Transition Elisabeth Borne sprays yellow paint on a mark for new bicycle lanes during an event to promote the use of bicycles in Evry-Courcouronnes, south of Paris, France May 14, 2020. Christophe Ena/Pool via REUTERS

French Minister for Ecological and Inclusive Transition Elisabeth Borne sprays yellow paint on a mark for new bicycle lanes during an event to promote the use of bicycles in Evry-Courcouronnes, south of Paris, France May 14, 2020. Christophe Ena/Pool via REUTERS

Head of the Ile de France regional council Valerie Pecresse and French Minister for Ecological and Inclusive Transition Elisabeth Borne talk to a bike repair shop owner during an event to promote the use of bicycles in Evry-Courcouronnes, south of Paris, France May 14, 2020. Christophe Ena/Pool via REUTERS

Head of the Ile de France regional council Valerie Pecresse and French Minister for Ecological and Inclusive Transition Elisabeth Borne talk to a bike repair shop owner during an event to promote the use of bicycles in Evry-Courcouronnes, south of Paris, France May 14, 2020. Christophe Ena/Pool via REUTERS

A woman stands next to a sign promoting social distancing as Israel's airport authority announced a pilot programme revealing what passengers leaving Israel should except as air travel gradually returns to normal after weeks of bare minimum flights due to the coronavirus disease (COVID-19) outbreak, at Ben Gurion International Airport, in Lod, near Tel Aviv, Israel May 14, 2020. REUTERS/Ronen Zvulun

A commuter walks past a notice promoting social distancing, posted on the floor at the entrance of the Syntagma square metro station, as a preventive measure against the spread of the coronavirus disease (COVID-19) in Athens, Greece, May 4, 2020. The notice reads "I keep a distance, we move around responsibly, we stay safe. Picture taken May 4, 2020. REUTERS/Alkis Konstantinidis

A notice promoting social distancing as a preventive measure against the spread of the coronavirus disease (COVID-19) is posted on the floor at the entrance of the Syntagma square metro station, in Athens, Greece, May 4, 2020. The notice reads "I keep a distance, we move around responsibly, we stay safe. Picture taken May 4, 2020. REUTERS/Alkis Konstantinidis

A staff member plays rock paper scissors with a passerby during a shop promotion event at a store, following the coronavirus disease (COVID-19) outbreak, in Beijing, China May 4, 2020. REUTERS/Thomas Peter

A heart is projected on the statue of Christ the Redeemer amid a coronavirus disease (COVID-19) outbreak in Rio de Janeiro, Brazil, May 3, 2020. REUTERS/Pilar Olivares TPX IMAGES OF THE DAY

A journalist in a mask works on his computer near the statue of Christ the Redeemer (not pictured), lit up with a face mask to promote self care, following the coronavirus disease (COVID-19) outbreak, in Rio de Janeiro, Brazil, May 3, 2020. REUTERS/Pilar Olivares

A man wearing a mask stands in front of the statue of Christ the Redeemer, lit up with a face mask to promote self care, following the coronavirus disease (COVID-19) outbreak, in Rio de Janeiro, Brazil, May 3, 2020. The message projected on the statue reads, "Masks save". REUTERS/Pilar Olivares REFILE - CORRECTING ID

A police officer wearing a mask stands in front of the statue of Christ the Redeemer, lit up with a face mask to promote self care, following the coronavirus disease (COVID-19) outbreak, in Rio de Janeiro, Brazil, May 3, 2020. The message projected on the statue reads, "Masks save". REUTERS/Pilar Olivares

The statue of Christ the Redeemer is lit up with a face mask to promote self care, following the coronavirus disease (COVID-19) outbreak, in Rio de Janeiro, Brazil, May 3, 2020. The message projected on the statue reads, "Masks save". REUTERS/Pilar Olivares

A man in a mask walks past the statue of Christ the Redeemer, lit up with a face mask to promote self care, following the coronavirus disease (COVID-19) outbreak, in Rio de Janeiro, Brazil, May 3, 2020. The message projected on the statue reads, "Masks save". REUTERS/Pilar Olivares

The statue of Christ the Redeemer is lit up with a face mask to promote self care following the coronavirus disease (COVID-19) outbreak, in Rio de Janeiro, Brazil, May 3, 2020. The message projected on the statue reads, "Masks save". REUTERS/Pilar Olivares

The statue of Christ the Redeemer is lit up with a face mask to promote self care following the coronavirus disease (COVID-19) outbreak, in Rio de Janeiro, Brazil, May 3, 2020. The message projected on the statue reads, "Masks save". REUTERS/Pilar Olivares

Sea Paradise staff wearing protective face masks observe the dolphin show during a media event to promote the launch of free online animal shows for children and families staying home during Japan's long holiday known as Golden Week, following the coronavirus disease (COVID-19) outbreak, at Yokohama Hakkeijima Sea Paradise which is now closed to the public, in Yokohama, Kanagawa Prefecture, Japan April 30, 2020. REUTERS/Kim Kyung-Hoon

A trainer walks next to Sea Paradise staff wearing protective face masks at the dolphin show during a media event to promote the launch of free online animal shows for children and families staying home during Japan's long holiday known as Golden Week, following the coronavirus disease (COVID-19) outbreak, at Yokohama Hakkeijima Sea Paradise which is now closed to the public, in Yokohama, Kanagawa Prefecture, Japan April 30, 2020. REUTERS/Kim Kyung-Hoon

A trainer gestures next to beluga whale, as she prepares for the show in front of an empty tribune at a media event to promote the launch of free online animal shows for children and families staying home during Japan's long holiday known as Golden Week, following the coronavirus disease (COVID-19) outbreak, at Yokohama Hakkeijima Sea Paradise which is now closed to the public, in Yokohama, Kanagawa Prefecture, Japan April 30, 2020. REUTERS/Kim Kyung-Hoon

Sea Paradise staff wearing protective face masks stand on top of the dolphin pool as the dolphin show takes place during a media event to promote the launch of free online animal shows for children and families staying home during Japan's long holiday known as Golden Week, following the coronavirus disease (COVID-19) outbreak, at Yokohama Hakkeijima Sea Paradise which is now closed to the public, in Yokohama, Kanagawa Prefecture, Japan April 30, 2020. REUTERS/Kim Kyung-Hoon

Sea Paradise staff wearing a protective face mask stands next to a mascot at a the dolphin show during a media event to promote the launch of free online animal shows for children and families staying home during Japan's long holiday known as Golden Week, following the coronavirus disease (COVID-19) outbreak, at Yokohama Hakkeijima Sea Paradise which is now closed to the public, in Yokohama, Kanagawa Prefecture, Japan April 30, 2020. REUTERS/Kim Kyung-Hoon

Sea Paradise staff wearing a protective face mask takes pictures from an empty tribune during the dolphin show at a media event to promote the launch of free online animal shows for children and families staying home during Japan's long holiday known as Golden Week, following the coronavirus disease (COVID-19) outbreak, at Yokohama Hakkeijima Sea Paradise which is now closed to the public, in Yokohama, Kanagawa Prefecture, Japan April 30, 2020. REUTERS/Kim Kyung-Hoon

A trainer gestures next to beluga whale, as she prepares for the show in front of an empty tribune at a media event to promote the launch of free online animal shows for children and families staying home during Japan's long holiday known as Golden Week, following the coronavirus disease (COVID-19) outbreak, at Yokohama Hakkeijima Sea Paradise which is now closed to the public, in Yokohama, Kanagawa Prefecture, Japan April 30, 2020. REUTERS/Kim Kyung-Hoon

Sea Paradise staff makes her way through empty facility, as the dolphin show takes place at a media event to promote the launch of free online animal shows for children and families staying home during Japan's long holiday known as Golden Week, following the coronavirus disease (COVID-19) outbreak, at Yokohama Hakkeijima Sea Paradise which is now closed to the public, in Yokohama, Kanagawa Prefecture, Japan April 30, 2020. REUTERS/Kim Kyung-Hoon

Sea Paradise staff wearing protective face masks take pictures from an empty tribune during the dolphin show at a media event to promote the launch of free online animal shows for children and families staying home during Japan's long holiday known as Golden Week, following the coronavirus disease (COVID-19) outbreak, at Yokohama Hakkeijima Sea Paradise which is now closed to the public, in Yokohama, Kanagawa Prefecture, Japan April 30, 2020. REUTERS/Kim Kyung-Hoon

A trainer and beluga whale perform during the show at a media event to promote the launch of free online animal shows for children and families staying home during Japan's long holiday known as Golden Week, following the coronavirus disease (COVID-19) outbreak, at Yokohama Hakkeijima Sea Paradise which is now closed to the public, in Yokohama, Kanagawa Prefecture, Japan April 30, 2020. REUTERS/Kim Kyung-Hoon

A trainer gestures next to beluga whale, as she prepares for the show at a media event to promote the launch of free online animal shows for children and families staying home during Japan's long holiday known as Golden Week, following the coronavirus disease (COVID-19) outbreak, at Yokohama Hakkeijima Sea Paradise which is now closed to the public, in Yokohama, Kanagawa Prefecture, Japan April 30, 2020. REUTERS/Kim Kyung-Hoon

A reporter wearing a face mask watches a dolphin show at a media event to promote the launch of free online animal shows for children and families staying home during Japan's long holiday known as Golden Week, following the coronavirus disease (COVID-19) outbreak, at Yokohama Hakkeijima Sea Paradise which is now closed to the public, in Yokohama, Kanagawa Prefecture, Japan April 30, 2020. REUTERS/Kim Kyung-Hoon

A reporter wearing a face mask takes pictures during a dolphin show at a media event to promote the launch of free online animal shows for children and families staying home during Japan's long holiday known as Golden Week, following the coronavirus disease (COVID-19) outbreak, at Yokohama Hakkeijima Sea Paradise which is now closed to the public, in Yokohama, Kanagawa Prefecture,Japan April 30, 2020. REUTERS/Kim Kyung-Hoon

Cashier Kerstin Strasen smiles as she sits at a register in a supermarket where German Minister for Family Affairs, Senior Citizens, Women and Youth, Franziska Giffey promoted the nationwide cooperation of supermarkets against domestic viloence, in Berlin, Germany, April 29, 2020. Michael Sohn/Pool via REUTERS

Cashier Kerstin Strasen smiles as she sits at a register in a supermarket where German Minister for Family Affairs, Senior Citizens, Women and Youth, Franziska Giffey promoted the nationwide cooperation of supermarkets against domestic viloence, in Berlin, Germany, April 29, 2020. Michael Sohn/Pool via REUTERS

Filipino Catholic priest Eduardo "Ponpon" Vasquez Jr, 47, picks up a plant as he talks to a man about urban gardening to encourage people to take up gardening within their own homes as a means to secure food sufficiency during a government-imposed lockdown to contain the coronavirus (COVID-19) outbreak, at Our Lady of Grace parish in Caloocan, in Caloocan, Metro Manila, Philippines, April 26, 2020. Vasquez has been promoting urban gardening to his community by providing free seeds. REUTERS/Eloisa Lopez SEARCH "CORONAVIRUS PRIESTS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Filipino Catholic priest Eduardo "Ponpon" Vasquez Jr, 47, talks to a man about urban gardening to encourage people to take up gardening within their own homes as a means to secure food sufficiency during a government-imposed lockdown to contain the coronavirus (COVID-19) outbreak, at Our Lady of Grace parish in Caloocan, Metro Manila, Philippines, April 26, 2020. Vasquez has been promoting urban gardening to his community by providing free seeds. REUTERS/Eloisa Lopez SEARCH "CORONAVIRUS PRIESTS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Filipino Catholic priest Eduardo "Ponpon" Vasquez Jr, 47, live-streams a workshop on how to make organic fertilizer, to encourage people to take up gardening within their own homes, outside Our Lady of Grace Parish in Caloocan during the coronavirus disease (COVID-19) outbreak, in Metro Manila, Philippines, April 20, 2020. Vasquez has been promoting urban gardening to his community by providing free seeds to try to enable food sufficiency during the lockdown. REUTERS/Eloisa Lopez SEARCH "CORONAVIRUS PRIESTS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Gina Claudio, the widow of Miguel Mart'nez Ortiz, receives the posthumous promotion to sergeant of her late husband from the Puerto Rico Police Commissioner, during the funeral ceremony for Mart'nez Ortiz, the first Puerto Rican police officer to die of the coronavirus disease (COVID-19) and who will be promoted posthumously to the rank of sergeant in San Juan, Puerto Rico April 28, 2020. REUTERS/Ricardo Arduengo

Mourners attend a funeral ceremony for Miguel Mart'nez Ortiz, the first Puerto Rican police officer to die of the coronavirus disease (COVID-19) and who will be promoted posthumously to the rank of sergeant in San Juan, Puerto Rico April 28, 2020. REUTERS/Ricardo Arduengo