School children walk along a street as a bus burns in the background during a protest organised by "Fantom 509" in the streets of Port-au-Prince, Haiti September 16, 2020. REUTERS/Andres Martinez Casares

Teacher Marzio Toniolo took this photo of school janitor Caterina Vanelli taking his temperature at the entrance of his primary school, as he arrives to make preparations ahead of the September 14 re-opening when children return to school for the first time since the end of February when Italy’s original ‘red zone’ towns were put under lockdown, adhering to strict regulations to avoid coronavirus disease (COVID-19) contagion, in Santo Stefano Lodigiano, Italy, September 4, 2020. Picture taken September 4, 2020. REUTERS/Marzio Toniolo

Teacher Marzio Toniolo took this photo of a video call between staff members ahead of the September 14 reopening of his primary school, when children return for the first time since the end of February when Italy’s original ‘red zone’ towns were put under lockdown, adhering to strict regulations to avoid coronavirus disease (COVID-19) contagion, in Santo Stefano Lodigiano, Italy, September 2, 2020. Picture taken September 2, 2020. REUTERS/Marzio Toniolo

Teacher Marzio Toniolo took this photo of teachers preparing tests for pupils ahead of the reopening of schools on September 14, where children returned for the first time since the end of February when Italy’s original ‘red zone’ towns were put under lockdown, adhering to strict regulations to avoid coronavirus disease (COVID-19) contagion, in Maleo, Italy, September 3, 2020. Picture taken September 3, 2020. REUTERS/Marzio Toniolo

Teacher Marzio Toniolo puts on protective gloves as he prepares to teach children at his primary school for the first time since the end of February when Italy’s original ‘red zone’ towns were put under lockdown, adhering to strict regulations to avoid coronavirus disease (COVID-19) contagion, in Santo Stefano Lodigiano, Italy, September 14, 2020. Picture taken September 14, 2020. REUTERS/Marzio Toniolo

Teacher Marzio Toniolo took this photo of a sheet of paper that lists his primary school's new rules to avoid coronavirus disease (COVID-19) contagion ahead of the September 14 reopening, when children return for the first time since the end of February when Italy’s original ‘red zone’ towns were put under lockdown, in Santo Stefano Lodigiano, Italy, September 10, 2020. Picture taken September 10, 2020. REUTERS/Marzio Toniolo

Teacher Marzio Toniolo took this photo of children at his primary school wearing masks, walking single file at a distance from eachother as they returned to school for the first time since the end of February when Italy’s original ‘red zone’ towns were put under lockdown, adhering to strict regulations to avoid coronavirus disease (COVID-19) contagion, in Santo Stefano Lodigiano, Italy, September 14, 2020. Picture taken September 14, 2020. REUTERS/Marzio Toniolo

Teacher Marzio Toniolo took this photo of hand sanitiser and kitchen roll on a teacher's desk in a classroom ahead of the September 14 reopening of his primary school, when children return for the first time since the end of February when Italy’s original ‘red zone’ towns were put under lockdown, adhering to strict regulations to avoid coronavirus disease (COVID-19) contagion, in Santo Stefano Lodigiano, Italy, September 10, 2020. Picture taken September 10, 2020. REUTERS/Marzio Toniolo

Teacher Marzio Toniolo took this photo of single desks set up in a classroom ahead of the September 14 reopening of his primary school, when children return for the first time since the end of February when Italy’s original ‘red zone’ towns were put under lockdown, adhering to strict regulations to avoid coronavirus disease (COVID-19) contagion, in Santo Stefano Lodigiano, Italy, September 10, 2020. Picture taken September 10, 2020. REUTERS/Marzio Toniolo

Teacher Marzio Toniolo took this photo of a staff member at his primary school wearing a mask and protective shield during a lesson, as children returned for the first time since the end of February when Italy’s original ‘red zone’ towns were put under lockdown, adhering to strict regulations to avoid coronavirus disease (COVID-19) contagion, in Santo Stefano Lodigiano, Italy, September 14, 2020. Picture taken September 14, 2020. REUTERS/Marzio Toniolo

Teacher Marzio Toniolo took this photo of a staff member at his primary school wearing a mask and protective shield during a lesson, as children returned for the first time since the end of February when Italy’s original ‘red zone’ towns were put under lockdown, adhering to strict regulations to avoid coronavirus disease (COVID-19) contagion, in Santo Stefano Lodigiano, Italy, September 14, 2020. Picture taken September 14, 2020. REUTERS/Marzio Toniolo

Teacher Marzio Toniolo, wearing black gloves, takes a picture as he gives hand sanitiser to one of his primary school pupils, as children return for the first time since the end of February when Italy’s original ‘red zone’ towns were put under lockdown, adhering to strict regulations to avoid coronavirus disease (COVID-19) contagion, in Santo Stefano Lodigiano, Italy, September 14, 2020. Picture taken September 14, 2020. REUTERS/Marzio Toniolo

Teacher Marzio Toniolo took this photo of hand sanitiser and kitchen roll on a teacher's desk in a classroom ahead of the September 14 reopening of his primary school, when children return for the first time since the end of February when Italy’s original ‘red zone’ towns were put under lockdown, adhering to strict regulations to avoid coronavirus disease (COVID-19) contagion, in Santo Stefano Lodigiano, Italy, September 10, 2020. Picture taken September 10, 2020. REUTERS/Marzio Toniolo

Teacher Marzio Toniolo took this photo of the carpark at his primary school which usually be used by teachers and parents, but has now been blocked off to try and avoid crowding as part of strict regulations to avoid coronavirus disease (COVID-19) contagion, as children return for the first time since the end of February when Italy’s original ‘red zone’ towns were put under lockdown, in Santo Stefano Lodigiano, Italy, September 14, 2020. Picture taken September 14, 2020. REUTERS/Marzio Toniolo

Teacher Marzio Toniolo took this photo of a sign outside his school advising pupils and adults to wear masks upon entry, as children returned to school for the first time since the end of February when Italy’s original ‘red zone’ towns were put under lockdown, adhering to strict regulations to avoid coronavirus disease (COVID-19) contagion, in Santo Stefano Lodigiano, Italy, September 14, 2020. Picture taken September 14, 2020. REUTERS/Marzio Toniolo

Teacher Marzio Toniolo took this photo of a 'bin for masks' inside his primary school, as children return for the first time since the end of February when Italy’s original ‘red zone’ towns were put under lockdown, adhering to strict regulations to avoid coronavirus disease (COVID-19) contagion, in Santo Stefano Lodigiano, Italy, September 14, 2020. Picture taken September 14, 2020. REUTERS/Marzio Toniolo

Teacher Marzio Toniolo took this photo of the entrance to his primary school as children returned for the first time since the end of February when Italy’s original ‘red zone’ towns were put under lockdown, adhering to strict regulations to avoid coronavirus disease (COVID-19) contagion. A welcome banner is hung by the front door, and circles on the ground indicate where the children have to stand to ensure social distancing, in Santo Stefano Lodigiano, Italy, September 14, 2020. Picture taken September 14, 2020. REUTERS/Marzio Toniolo

Teacher Marzio Toniolo took this photo of a schoolbus parked in a fenced off carpark, which would usually be used by teachers and parents but has been closed to avoid crowding, as children return to his primary school returned for the first time since the end of February when Italy’s original ‘red zone’ towns were put under lockdown, adhering to strict regulations to avoid coronavirus disease (COVID-19) contagion, in Santo Stefano Lodigiano, Italy, September 14, 2020. Picture taken September 14, 2020. REUTERS/Marzio Toniolo

Teacher Marzio Toniolo took this photo of the courtyard of his primary school, which has been separated into a different sections for each different class to ensure pupils from each class do not mix together, as part of strict regulations to avoid coronavirus disease (COVID-19) contagion, as children return for the first time since the end of February when Italy’s original ‘red zone’ towns were put under lockdown, in Santo Stefano Lodigiano, Italy, September 14, 2020. Picture taken September 14, 2020. REUTERS/Marzio Toniolo

Teacher Marzio Toniolo took this photo of a circle on the ground outside his primary school that reads "I wait here", to indicate where pupils from class 4E should stand as they return for the first time since the end of February when Italy’s original ‘red zone’ towns were put under lockdown, adhering to strict regulations to avoid coronavirus disease (COVID-19) contagion, in Santo Stefano Lodigiano, Italy, September 14, 2020. Picture taken September 14, 2020. REUTERS/Marzio Toniolo

Teacher Marzio Toniolo took this photo of the courtyard of his primary school, which has been separated into a different section for each different class, to ensure that pupils from different classes do not mix as part of strict regulations to avoid coronavirus disease (COVID-19) contagion, ahead of the September 14 reopening when children return for the first time since the end of February when Italy’s original ‘red zone’ towns were put under lockdown, in Santo Stefano Lodigiano, Italy, September 10, 2020. Picture taken September 10, 2020. REUTERS/Marzio Toniolo

Teacher Marzio Toniolo took this picture of a pupil at his primary school with a pink mask and textbook on her desk, as children returned for the first time since the end of February when Italy’s original ‘red zone’ towns were put under lockdown, adhering to strict regulations to avoid coronavirus disease (COVID-19) contagion, in Santo Stefano Lodigiano, Italy, September 14, 2020. Picture taken September 14, 2020. REUTERS/Marzio Toniolo

Parents and children protest the opening of schools, following the outbreak of the coronavirus disease (COVID-19) in the Brooklyn borough of New York City, U.S., September 14, 2020. REUTERS/Brendan McDermid

Parents and children protest the opening of schools, following the outbreak of the coronavirus disease (COVID-19) in the Brooklyn borough of New York City, U.S., September 14, 2020. REUTERS/Brendan McDermid

Pupils walk in a corridor as children return to the Simonetta Salacone primary and secondary school for the first time since March, adhering to strict regulations to avoid coronavirus disease (COVID-19) contagion, in Rome, Italy, September 14, 2020. REUTERS/Remo Casilli

A pupil wears a protective face mask as children return to the Simonetta Salacone primary and secondary school for the first time since March, adhering to strict regulations to avoid coronavirus disease (COVID-19) contagion, in Rome, Italy, September 14, 2020. REUTERS/Remo Casilli

A teacher wearing a face mask speaks to students sitting in a class during a lesson at the Liceo Isacco Newton high school for the first time since March, adhering to strict regulations to avoid the coronavirus disease (COVID-19) contagion in Rome, Italy September 14, 2020. REUTERS/Yara Nardi

A school worker uses a hand sanitizer as students return to the Liceo Isacco Newton high school for the first time since March, adhering to strict regulations to avoid coronavirus disease (COVID-19) contagion in Rome, Italy September 14, 2020. REUTERS/Yara Nardi

Students sit in a class during a lesson at the Liceo Isacco Newton high school for the first time since March, adhering to strict regulations to avoid the coronavirus disease (COVID-19) contagion in Rome, Italy September 14, 2020. REUTERS/Yara Nardi

Pupils attend a welcome ceremony as children return to the Simonetta Salacone primary and secondary school for the first time since March, adhering to strict regulations to avoid coronavirus disease (COVID-19) contagion, in Rome, Italy, September 14, 2020. REUTERS/Remo Casilli

Students sit in a class during a lesson at the Liceo Isacco Newton high school for the first time since March, adhering to strict regulations to avoid the coronavirus disease (COVID-19) contagion in Rome, Italy September 14, 2020. REUTERS/Yara Nardi

Social distancing signs are pictured as students wearing protective face masks return at the Liceo Isacco Newton high school for the first time since March, adhering to strict regulations to avoid coronavirus disease (COVID-19) contagion in Rome, Italy September 14, 2020. REUTERS/Yara Nardi

Social distancing signs are displayed on the door of a class during a lesson at the Liceo Isacco Newton high school for the first time since March, adhering to strict regulations to avoid the coronavirus disease (COVID-19) contagion in Rome, Italy September 14, 2020. REUTERS/Yara Nardi

Students wearing protective face masks return at the Liceo Isacco Newton high school for the first time since March, adhering to strict regulations to avoid coronavirus disease (COVID-19) contagion in Rome, Italy September 14, 2020. REUTERS/Yara Nardi

A social distancing sign is pictured as children return to the Simonetta Salacone primary and secondary school for the first time since March, adhering to strict regulations to avoid coronavirus disease (COVID-19) contagion, in Rome, Italy, September 14, 2020. REUTERS/Remo Casilli

A maths teacher wearing a face mask conducts a lesson at the Liceo Isacco Newton high school for the first time since March, adhering to strict regulations to avoid the coronavirus disease (COVID-19) contagion in Rome, Italy September 14, 2020. REUTERS/Yara Nardi

A teacher wearing a face mask speaks to students sitting in a class during a lesson at the Liceo Isacco Newton high school for the first time since March, adhering to strict regulations to avoid the coronavirus disease (COVID-19) contagion in Rome, Italy September 14, 2020. REUTERS/Yara Nardi

Students sit in a class during a lesson at the Liceo Isacco Newton high school for the first time since March, adhering to strict regulations to avoid the coronavirus disease (COVID-19) contagion in Rome, Italy September 14, 2020. REUTERS/Yara Nardi

Social distancing signs are displayed on the door of a class during a lesson at the Liceo Isacco Newton high school for the first time since March, adhering to strict regulations to avoid the coronavirus disease (COVID-19) contagion in Rome, Italy September 14, 2020. REUTERS/Yara Nardi

Children attend an open-air lesson as they return to the Simonetta Salacone primary and secondary school for the first time since March, adhering to strict regulations to avoid coronavirus disease (COVID-19) contagion, in Rome, Italy, September 14, 2020. REUTERS/Remo Casilli

Children attend an open-air lesson as they return to the Simonetta Salacone primary and secondary school for the first time since March, adhering to strict regulations to avoid coronavirus disease (COVID-19) contagion, in Rome, Italy, September 14, 2020. REUTERS/Remo Casilli TPX IMAGES OF THE DAY

A sign encouraging the use of protective face masks is pictured in a class during a lesson at the Liceo Isacco Newton high school for the first time since March, adhering to strict regulations to avoid the coronavirus disease (COVID-19) contagion in Rome, Italy September 14, 2020. REUTERS/Yara Nardi

A teacher and students sit in a class during a lesson at the Liceo Isacco Newton high school for the first time since March, adhering to strict regulations to avoid the coronavirus disease (COVID-19) contagion in Rome, Italy September 14, 2020. REUTERS/Yara Nardi

A bottle of hand sanitizer is pictured as students sit in a class during a lesson at the Liceo Isacco Newton high school for the first time since March, adhering to strict regulations to avoid the coronavirus disease (COVID-19) contagion in Rome, Italy September 14, 2020. REUTERS/Yara Nardi

A pupil has his hands disinfected as children return to the Simonetta Salacone primary and secondary school for the first time since March, adhering to strict regulations to avoid coronavirus disease (COVID-19) contagion, in Rome, Italy, September 14, 2020. REUTERS/Remo Casilli

A sign reads "Welcome" as children return to the Simonetta Salacone primary and secondary school for the first time since March, adhering to strict regulations to avoid coronavirus disease (COVID-19) contagion, in Rome, Italy, September 14, 2020. REUTERS/Remo Casilli

Social distancing signs are seen in a classroom ahead of the lesson at the Liceo Isacco Newton high school for the first time since March, adhering to strict regulations to avoid the coronavirus disease (COVID-19) contagion in Rome, Italy September 14, 2020. REUTERS/Yara Nardi

A sign reads "Welcome" as children return to the Simonetta Salacone primary and secondary school for the first time since March, adhering to strict regulations to avoid coronavirus disease (COVID-19) contagion, in Rome, Italy, September 14, 2020. REUTERS/Remo Casilli

A pupil has his temperature checked as children return to the Simonetta Salacone primary and secondary school for the first time since March, adhering to strict regulations to avoid coronavirus disease (COVID-19) contagion, in Rome, Italy, September 14, 2020. REUTERS/Remo Casilli

Children are seen as they return to the Simonetta Salacone primary and secondary school for the first time since March, adhering to strict regulations to avoid coronavirus disease (COVID-19) contagion, in Rome, Italy, September 14, 2020. A sign reads "Welcome". REUTERS/Remo Casilli

A pupil has her temperature checked as children return to the Simonetta Salacone primary and secondary school for the first time since March, adhering to strict regulations to avoid coronavirus disease (COVID-19) contagion, in Rome, Italy, September 14, 2020. REUTERS/Remo Casilli

The exterior of the Slum2School project, a volunteer-driven organisation empowering underserved children in slums and remote communities in Lagos, Nigeria August 19, 2020. Picture taken August 19, 2020. REUTERS/Seun Sanni

Children wearing protective masks play on the first week of school after the summer holidays during the coronavirus disease (COVID-19) outbreak, at Larramendi Ikastola in Mungia, Spain, September 8, 2020. REUTERS/Vincent West

Children wash their hands before eating on the first week of school after the summer holidays during the coronavirus disease (COVID-19) outbreak, at Larramendi Ikastola in Mungia, Spain, September 8, 2020. REUTERS/Vincent West

Children wave to friends from separate classes during an online assembly, as normal assemblies will not take place at the moment, on their first day of school at Holne Chase Primary School, amid the outbreak of the coronavirus disease (COVID-19), in Milton Keynes, Britain, September 3, 2020. REUTERS/Andrew Boyers

'Grateful hearts' made by school children during the lockdown are attached to a window at Holne Chase Primary School on the reopening day of schools, amid the outbreak of the coronavirus disease (COVID-19), in Milton Keynes, Britain, September 3, 2020.

Children sit in a classroom on their first day of school at Heath Mount, amid the outbreak of the coronavirus disease (COVID-19), in Watton at Stone, Britain September 3, 2020. REUTERS/Andrew Couldridge

Children sit in a classroom on their first day of school at Heath Mount, amid the outbreak of the coronavirus disease (COVID-19), in Watton at Stone, Britain September 3, 2020. REUTERS/Andrew Couldridge

A student sitting in a classroom looks at a screen instructing children what will happen when someone in school shows symptoms of COVID-19, on her first day of school at Heath Mount, amid the outbreak of the coronavirus disease (COVID-19), in Watton, Britain September 3, 2020. REUTERS/Andrew Couldridge

Children walk to school on their first day, amid the outbreak of the coronavirus disease (COVID-19), in Hertfordshire, Britain September 3, 2020. REUTERS/Andrew Couldridge