An aerial view shows an empty playground as Israel tightened a national stay-at-home policy with guidelines aimed at halting the spread of the coronavirus which would now be enforced by police under emergency orders, in Jerusalem March 22, 2020.

A woman wearing gloves holds a childs hand in Hyde Park as the spread of the coronavirus disease (COVID-19) continues. London, Britain March 21, 2020.

A child's shirt is pictured at a school in Newcastle-under-Lyme as the majority of schools in the UK close while the spread of the coronavirus disease (COVID-19) continues. Newcastle-under-Lyme, London, Britain March 20, 2020.

A girl wearing a protective mask leaves the HUCA (Central University Hospital of Asturias) amidst a 15-day state of emergency declared to combat the outbreak of the coronavirus disease (COVID-19), in Oviedo, Spain, March 17, 2020.

A boy skates at a skate park as the spread of coronavirus disease (COVID-19) continues, in London, Britain, March 25, 2020.

A children's playground is closed with caution tape amid the coronavirus disease (COVID-19) outbreak in Seattle, Washington, U.S., March 24, 2020.

A person wearing a protective mask carries a child inside the premises of a hospital, where a special ward has been set up for treating the coronavirus disease, in Mumbai, India March 17, 2020.

A child wearing a face mask and a face shield is seen at a railway station in Xianning of Hubei province, the epicentre of China's coronavirus disease (COVID-19) outbreak, March 25, 2020.

A Syrian refugee woman puts a face mask on a boy as a precaution against the spread of coronavirus, in al-Wazzani area, in southern Lebanon, March 14, 2020.

Georgia Mayer, aged 16 says goodbye to her friends at a school in Newcastle-under-Lyme as the majority of schools in the UK close while the spread of the coronavirus disease (COVID-19) continues. Newcastle-under-Lyme, London, Britain March 20, 2020.

A student looks on at the basketball court at the State House Girls High School in Nairobi following a directive by the Kenyan government to suspend lessons in schools as a preventative measure against coronavirus disease (COVID-19) fears, in Nairobi, Kenya March 16, 2020.

A child wears a mask to prevent an outbreak of a new coronavirus at the Hong Kong West Kowloon High Speed Train Station, in Hong Kong, China January 23, 2020.

Sha Jie, 10, a primary school student, attends an online Chinese class as he sits at home during the novel coronavirus disease (COVID-19) outbreak, in Shanghai, China, March 3, 2020. "I go out once a day at most, just hanging around our neighbourhood. My parents told me to wear masks if going outside and to wash hands carefully after coming back home," said Jie. REUTERS/Aly Song

A police officer checks the body temperature of a child at a checkpoint placed amidst the lockdown of the country's capital to contain the spread of coronavirus, in the outskirts of Quezon City, Metro Manila, Philippines, March 15, 2020.

A man helps a child learn to cycle along an empty Sandymount strand as the spread of coronavirus disease (COVID-19) continues, in Dublin, Ireland, March 20, 2020.

A child, wearing a protective face mask, following an outbreak of coronavirus, uses hand sanitizer at "Stella Kids", daycare center in Tokyo, Japan, March 5, 2020.

Life inside a red zone:A child dressed in a Superman outfit walks down a street in Casalpusterlengo, one of the towns on lockdown due to a coronavirus outbreak, in this picture taken by schoolteacher Marzio Toniolo in Casalpusterlengo, Italy, February 26, 2020. Picture taken February 26, 2020. Marzio Toniolo/via REUTERS.

5th grader Lydia Hassebroek plays in her backyard on a Friday afternoon at the end of her first week of home school, after New York State Governor Andrew Cuomo signed an executive order closing public schools statewide due to concerns over the rapid spread of coronavirus disease (COVID-19), in Brooklyn, New York, U.S. March 20, 2020.

Joy Malone's daughter and nephew look out the window of her home onto a deserted street inside an area under lockdown due to coronavirus disease (COVID-19) cases in New Rochelle, New York, U.S., March 20, 2020. Picture taken March 20, 2020.

A girl uses a skipping rope on Clapham Common, as the spread of the coronavirus disease (COVID-19) continues, in London, Britain, March 25, 2020.

A boy wears a protective face mask at a shopping mall, following an outbreak of the novel coronavirus disease (COVID-19), in Shanghai, China March 19, 2020.

A member of the medical team checks the temperature of a child, following the coronavirus outbreak, at a checkpoint on the outskirts of Duhok, Iraq March 2, 2020.

A child looks at an illustration of a rainbow on the side of a house in Newcastle-under-Lyme, as the spread of coronavirus disease (COVID-19) continues. Newcastle-under-Lyme, Britain, March 25, 2020.

Sophie and Emily Ward pose for a photograph with their hand-drawn picture of rainbows and a message on their window in St Helens, as the spread of coronavirus disease (COVID-19) continues. St Helens, Britain, March 25, 2020.