High school English teacher, Fabiano da Silva Silveira, 41, from the Colegio Israelita Brasileiro or Brazilian Israeli High School leads an online class after regular classes were suspended due to coronavirus disease (COVID-19) outbreak, in Porto Alegre, Brazil, March 20, 2020. REUTERS/Diego Vara 

High school English teacher, Fabiano da Silva Silveira, 41, from the Colegio Israelita Brasileiro or Brazilian Israeli High School leads an online class after regular classes were suspended due to coronavirus disease (COVID-19) outbreak, in Porto Alegre, Brazil, March 20, 2020. REUTERS/Diego Vara 

A view of the closed Punk Club So36, in the district of Kreuzberg, during coronavirus disease (COVID-19) outbreak, in Berlin, Germany March 20, 2020. REUTERS/Michele Tantussi 

High school English teacher, Fabiano da Silva Silveira, 41, from the Colegio Israelita Brasileiro or Brazilian Israeli High School leads an online class after regular classes were suspended due to coronavirus disease (COVID-19) outbreak, in Porto Alegre, Brazil, March 20, 2020. REUTERS/Diego Vara 

High school English teacher, Fabiano da Silva Silveira, 41, from the Colegio Israelita Brasileiro or Brazilian Israeli High School leads an online class after regular classes were suspended due to coronavirus disease (COVID-19) outbreak, in Porto Alegre, Brazil, March 20, 2020. REUTERS/Diego Vara 

High school English teacher, Fabiano da Silva Silveira, 41, from the Colegio Israelita Brasileiro or Brazilian Israeli High School leads an online class after regular classes were suspended due to coronavirus disease (COVID-19) outbreak, in Porto Alegre, Brazil, March 20, 2020. REUTERS/Diego Vara 

Katherine Anderson and Yasuaki Saito, owners of The London Plane, who have organized an effort to donate more than 1,000 meals per day to local hospital workers on the front lines of the coronavirus disease (COVID-19) outbreak, pose for a portrait at The London Plane in Seattle, Washington, U.S. March 20, 2020. REUTERS/David Ryder 

Elderly stand in line to collect their monthly pension before the 4:00 pm - 8:00 am curfew imposed by the government to prevent the spread of the coronavirus disease (COVID-19), in Guayaquil, Ecuador March 20, 2020. REUTERS/Santiago Arcos 

People walk in front of a closed bar in the district of Neukoelln during coronavirus disease (COVID-19) outbreak in Berlin, Germany March 20, 2020. REUTERS/Michele Tantussi 

A view of the closed Franken bar in the district of Kreuzberg during coronavirus disease (COVID-19) outbreak in Berlin, Germany March 20, 2020. REUTERS/Michele Tantussi 

Katherine Anderson and Yasuaki Saito, owners of The London Plane, who have organized an effort to donate more than 1,000 meals per day to local hospital workers on the front lines of the coronavirus disease (COVID-19) outbreak, pose for a portrait at The London Plane in Seattle, Washington, U.S. March 20, 2020. REUTERS/David Ryder 

A view of a closed bar in the district of Kreuzberg during coronavirus disease (COVID-19) outbreak in Berlin, Germany March 20, 2020. REUTERS/Michele Tantussi 

People walk in front of a closed bar in the district of Neukoelln during coronavirus disease (COVID-19) outbreak in Berlin, Germany March 20, 2020. REUTERS/Michele Tantussi 

A man wears a protective mask as a Royal Thai Army soldiers sanitize in the city due to the coronavirus disease (COVID-19) outbreak in Bangkok, Thailand March 21, 2020. REUTERS/Soe Zeya Tun 

People walk in the district of Neukoelln during coronavirus disease (COVID-19) outbreak in Berlin, Germany March 20, 2020. REUTERS/Michele Tantussi 

Royal Thai Army soldiers sanitize in the city due to the coronavirus disease (COVID-19) outbreak in Bangkok, Thailand March 21, 2020. REUTERS/Soe Zeya Tun 

Royal Thai Army soldiers sanitize in the city due to the coronavirus disease (COVID-19) outbreak in Bangkok, Thailand March 21, 2020. REUTERS/Soe Zeya Tun 

A beach volleyball net is pictured at Sao Conrado beach during the coronavirus disease (COVID-19) outbreak in Rio de Janeiro, Brazil, March 20, 2020. REUTERS/Sergio Moraes 

A view of the Sao Conrado beach is seen during the coronavirus disease (COVID-19) outbreak in Rio de Janeiro, Brazil, March 20, 2020. REUTERS/Sergio Moraes 

A beach soccer field is pictured at Sao Conrado beach during the coronavirus disease (COVID-19) outbreak in Rio de Janeiro, Brazil, March 20, 2020. REUTERS/Sergio Moraes 

Flyers announce canceled concerts at the closed Punk Club So36, in the district of Kreuzberg, during outbreak of coronavirus disease (COVID-19) in Berlin, Germany March 20, 2020. REUTERS/Michele Tantussi 

A Royal Thai Army soldier sanitizes in the city due to the coronavirus disease (COVID-19) outbreak in Bangkok, Thailand March 21, 2020. REUTERS/Soe Zeya Tun 

A goal post is seen at Copacabana beach during the coronavirus disease (COVID-19) outbreak in Rio de Janeiro, Brazil, March 20, 2020. REUTERS/Sergio Moraes 

Royal Thai Army soldiers sanitize in the city due to the coronavirus disease (COVID-19) outbreak in Bangkok, Thailand March 21, 2020. REUTERS/Soe Zeya Tun 

The statue of late Brazilian formula one driver Ayrton Senna is pictured at Copacabana beach during the coronavirus disease (COVID-19) outbreak in Rio de Janeiro, Brazil, March 20, 2020. REUTERS/Sergio Moraes 

People walk on the streets, a day after California's Governor Gavin Newsom implemented a statewide "stay at home order" directing the state's nearly 40 million residents to stay in their homes for the foreseeable future in the face of the fast-spreading coronavirus disease (COVID-19), in San Francisco, California, U.S. March 20, 2020. REUTERS/Shannon Stapleton 

A man walks next to the statue of late Brazilian formula one driver Ayrton Senna at Copacabana beach during the coronavirus disease (COVID-19) outbreak in Rio de Janeiro, Brazil, March 20, 2020. REUTERS/Sergio Moraes 

People walk on the streets, a day after California's Governor Gavin Newsom implemented a statewide "stay at home order" directing the state's nearly 40 million residents to stay in their homes for the foreseeable future in the face of the fast-spreading coronavirus disease (COVID-19), in San Francisco, California, U.S. March 20, 2020. REUTERS/Shannon Stapleton TPX IMAGES OF THE DAY 

A man wearing a face mask walks across the street, a day after California's Governor Gavin Newsom implemented a statewide "stay at home order" directing the state's nearly 40 million residents to stay in their homes for the foreseeable future in the face of the fast-spreading coronavirus disease (COVID-19), in San Francisco, California, U.S. March 20, 2020. REUTERS/Shannon Stapleton 

Volunteers Caitlin Smith, Danny Conkling and Tiffany Ran prepare dinners as part of an organized effort by The London Plane restaurant to donate more than 1,000 meals per day to local hospital workers on the front lines of the coronavirus disease (COVID-19) outbreak, at The London Plane in Seattle, Washington, U.S. March 20, 2020. REUTERS/David Ryder 

General view outside a fish and chip shop in Belfast as the coronavirus disease (COVID-19) continues. Belfast, Northern Ireland March 20, 2020. REUTERS/Jason Cairnduff 

Volunteer and cook Tiffany Ran chops tomatoes as part of an organized effort by The London Plane restaurant to donate more than 1,000 meals per day to local hospital workers on the front lines of the coronavirus disease (COVID-19) outbreak, at The London Plane in Seattle, Washington, U.S. March 20, 2020. REUTERS/David Ryder 

A woman is seen next to the statue of late Brazilian formula one driver Ayrton Senna at Copacabana beach during the coronavirus disease (COVID-19) outbreak in Rio de Janeiro, Brazil, March 20, 2020. REUTERS/Sergio Moraes 

Inhabitants applaud to pay tribute to medical staff as France faces an aggressive progression of the coronavirus disease (COVID-19) in Paris, France, March 20, 2020. REUTERS/Benoit Tessier 

Inhabitants applaud to pay tribute to medical staff as France faces an aggressive progression of the coronavirus disease (COVID-19) in Paris, France, March 20, 2020. REUTERS/Benoit Tessier 

An inhabitant applauds to pay tribute to medical staff as France faces an aggressive progression of the coronavirus disease (COVID-19) in Paris, France, March 20, 2020. REUTERS/Benoit Tessier 

General view of BoxPark in Wembley as the spread of the coronavirus disease (COVID-19) continues. London, Britain March 20, 2020. REUTERS/Matthew Childs 

People applaud from their windows and balconies as they take part in an event organized through social media to show gratitude to healthcare workers during a partial lockdown as part of a 15-day state of emergency to combat the spread of coronavirus disease (COVID-19), outside a pharmacy in Ronda, southern Spain, March 20, 2020. REUTERS/Jon Nazca 

People applaud from their windows and balconies as they take part in an event organized through social media to show gratitude to healthcare workers during a partial lockdown as part of a 15-day state of emergency to combat the spread of coronavirus disease (COVID-19), outside a pharmacy in Ronda, southern Spain, March 20, 2020. REUTERS/Jon Nazca 

Mr Simon McLean, Headteacher of Nettlefield Primary School poses for a picture as the majority of schools in the UK close while the spread of the coronavirus disease (COVID-19) continues. Belfast, Northern Ireland March 20, 2020. REUTERS/Jason Cairnduff 

Health workers applaud people who show them gratitude from their balconies and windows as part of an event organized through social media, during a partial lockdown as part of a 15-day state of emergency to combat the spread of coronavirus disease (COVID-19) in Barcelona, Spain, March 20, 2020. REUTERS/Nacho Doce 

Health workers applaud people who show them gratitude from their balconies and windows as part of an event organized through social media, during a partial lockdown as part of a 15-day state of emergency to combat the spread of coronavirus disease (COVID-19) in Barcelona, Spain, March 20, 2020. REUTERS/Nacho Doce 

Brown, 33, a barber, performs Friday prayer in his shop as mosques are closed over concerns of the spread of coronavirus disease (COVID-19) in Medina, neighbourhood of Accra, Ghana March 20, 2020. REUTERS/Francis Kokoroko 

Brown, 33, a barber, performs Friday prayer in his shop as mosques are closed over concerns of the spread of coronavirus disease (COVID-19) in Medina, neighbourhood of Accra, Ghana March 20, 2020. REUTERS/Francis Kokoroko 

A health worker applauds people who show the gratitude from their balconies and windows as part of an event organized through social media, during a partial lockdown as part of a 15-day state of emergency to combat the spread of coronavirus disease (COVID-19) in Barcelona, Spain, March 20, 2020. REUTERS/Nacho Doce 

Health workers applaud people who show them gratitude from their balconies and windows as part of an event organized through social media, during a partial lockdown as part of a 15-day state of emergency to combat the spread of coronavirus disease (COVID-19) in Barcelona, Spain, March 20, 2020. REUTERS/Nacho Doce 

A man wearing a face mask walks through Chinatown, a day after California's Governor Gavin Newsom implemented a statewide "stay at home order" directing the state's nearly 40 million residents to stay in their homes for the foreseeable future in the face of the fast-spreading coronavirus disease (COVID-19), in San Francisco, California, U.S. March 20, 2020. REUTERS/Shannon Stapleton 

General view of a Prezzo in Hemel Hempstead as the spread of the coronavirus disease (COVID-19) continues. Hemel Hempstead, Britain March 20, 2020. REUTERS/Paul Childs 

Members of the Military Emergency Unit (UME) install a tent hospital in the underground parking lot of the Hospital Universitario Central de Asturias to help combat the spread of coronavirus disease (COVID-19) in Oviedo, Spain, March 19, 2020. Picture taken March 19,2020 REUTERS/Eloy Alonso 

General view of a pub in Hemel Hempstead as the spread of the coronavirus disease (COVID-19) continues. Hemel Hempstead, Britain March 20, 2020. REUTERS/Paul Childs 

Members of the Military Emergency Unit (UME) install a tent hospital in the underground parking lot of the Hospital Universitario Central de Asturias to help combat the spread of coronavirus disease (COVID-19) in Oviedo, Spain, March 19, 2020. Picture taken March 19,2020 REUTERS/Eloy Alonso 

Members of the Military Emergency Unit (UME) install a tent hospital in the underground parking lot of the Hospital Universitario Central de Asturias to help combat the spread of coronavirus disease (COVID-19) in Oviedo, Spain, March 19, 2020. Picture taken March 19,2020 REUTERS/Eloy Alonso 

Health workers applaud people who show them gratitude from their balconies and windows as part of an event organized through social media, during a partial lockdown as part of a 15-day state of emergency to combat the spread of coronavirus disease (COVID-19) in Barcelona, Spain, March 20, 2020. REUTERS/Nacho Doce 

Municipal workers disinfect stalls at the Comayaguela market as part of the measures against the spreading of the coronavirus disease (COVID-19), in Tegucigalpa, Honduras March 20, 2020. REUTERS/Jorge Cabrera 

A municipal worker disinfects stalls at the Comayaguela market as part of the measures against the spreading of the coronavirus disease (COVID-19), in Tegucigalpa, Honduras March 20, 2020. REUTERS/Jorge Cabrera 

A homeless man sleeps as a municipal worker disinfects a building as part of the measures against the spreading of the coronavirus disease (COVID-19), in Tegucigalpa, Honduras March 20, 2020. REUTERS/Jorge Cabrera 

Health workers applaud people who show them gratitude from their balconies and windows as part of an event organized through social media, during a partial lockdown as part of a 15-day state of emergency to combat the spread of coronavirus disease (COVID-19) in Barcelona, Spain, March 20, 2020. REUTERS/Nacho Doce 

Women wash their stalls at the Comayaguela market as part of the measures against the spreading of the coronavirus disease (COVID-19), in Tegucigalpa, Honduras March 20, 2020. REUTERS/Jorge Cabrera 

Members of the Military Emergency Unit (UME) install a tent hospital in the underground parking lot of the Hospital Universitario Central de Asturias to help combat the spread of coronavirus disease (COVID-19) in Oviedo, Spain, March 19, 2020. Picture taken March 19,2020 REUTERS/Eloy Alonso 

Members of the Military Emergency Unit (UME) install a tent hospital in the underground parking lot of the Hospital Universitario Central de Asturias to help combat the spread of coronavirus disease (COVID-19) in Oviedo, Spain, March 19, 2020. Picture taken March 19,2020 REUTERS/Eloy Alonso