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Students wait in a queue as their friend receives a dose of the Moderna vaccine against the coronavirus disease (COVID-19), at their school during a vaccination drive for children aged 12-17 in Bhaktapur, Nepal, January 9, 2022.
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Schoolchildren, wearing protective face masks, work in a classroom at the College Jean Renoir Middle School in Boulogne-Billancourt, near Paris, France, January 7, 2022.
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Students of Kakungulu Memorial Secondary school attend a class, after schools reopened following the coronavirus disease (COVID-19) induced shutdown, in Kibuli suburb of Kampala, Uganda, January 10, 2022.
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Students use computers on the day classes restart at the I.T.C Di Vittorio - I.T.I. Lattanzio secondary school as coronavirus disease (COVID-19) cases surge across the country and with new rules in place as part of the government's efforts to maintain in-person learning, in Rome, Italy, January 10, 2022.
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Students sit in the classroom, as returning to schools with coronavirus disease (COVID-19) prevention measures began, in San Antonio, Texas, U.S., January 11, 2022.
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Primary seven pupils sit inside their classroom at the Sweswe Primary School after schools reopened following the coronavirus disease (COVID-19) induced shutdown in Kyaka II Refugee Settlement, in Kyegegwa District, Uganda January 11, 2022.
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High school students leave the Fiorello H. La Guardia High School as some students in New York City staged a walkout to urge officials to offer remote learning options due to concerns over safety amid the spread of the coronavirus disease (COVID-19) in Manhattan in New York City, New York, U.S., January 11, 2022.
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Pupils queue at the Sweswe Primary School after schools reopened following the coronavirus disease (COVID-19) induced shutdown in Kyaka II Refugee Settlement, in Kyegegwa District, Uganda January 11, 2022.
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Pupils at The Fulham Boys School take a mock exam on the first day after the Christmas holidays following a government announcement that face masks are to be worn in English secondary schools amid the coronavirus disease (COVID-19) outbreak in London, Britain, January 4, 2022.
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Teacher Oscar Peret, 40, wears a protective face mask as he speaks to students in Salesia de Sant Josep school after the Christmas break, amid the coronavirus disease (COVID-19) surge in Barcelona, Spain January 10, 2022.
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Students wearing protective masks, study in a classroom at the Merlan school in Paillet where, according to the director of the Pasteur Institut of Ivory Coast, professor Mireille Dosso, cases of the new Omicron variant of SARS-CoV-2 were detected, amid the outbreak of the coronavirus disease (COVID-19) in Abidjan, Cote d'Ivoire January 11, 2022. REUTERS / Luc Gnago
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Students register and have their temperatures taken at Bukere Secondary School, after schools reopened following the coronavirus disease (COVID-19) induced shutdown in Kyaka II Refugee Settlement, in Kyegegwa District, Uganda January 11, 2022.
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Students return to school with coronavirus disease (COVID-19) prevention measures in place in San Antonio, Texas, U.S., January 11, 2022.
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A student wearing a protective mask, studies in a classroom at the Merlan school in Paillet where, according to the director of the Pasteur Institut of Ivory Coast, professor Mireille Dosso, cases of the new Omicron variant of SARS-CoV-2 were detected, amid the outbreak of the coronavirus disease (COVID-19) in Abidjan, Cote d'Ivoire January 11, 2022.
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Students sit in a classroom on the day classes restart at the I.T.C Di Vittorio - I.T.I. Lattanzio secondary school as coronavirus disease (COVID-19) cases surge across the country and with new rules in place as part of the government's efforts to maintain in-person learning, in Rome, Italy, January 10, 2022.
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A school worker applies hand sanitizer to students' hands as they return to school after the Christmas holidays as Portugal experiences a surge in coronavirus disease (COVID-19) cases due to the Omicron variant in Lisbon, Portugal, January 10, 2022.
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Students wearing protective masks, study in a classroom at the Merlan school in Paillet where, according to the director of the Pasteur Institut of Ivory Coast, professor Mireille Dosso, cases of the new Omicron variant of SARS-CoV-2 were detected, amid the outbreak of the coronavirus disease (COVID-19) in Abidjan, Cote d'Ivoire January 11, 2022.
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Primary seven pupils sit inside their classroom at the Sweswe Primary School after schools reopened following the coronavirus disease (COVID-19) induced shutdown in Kyaka II Refugee Settlement, in Kyegegwa District, Uganda January 11, 2022.
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Students attend a class, as returning to schools with coronavirus disease (COVID-19) prevention measures began, in San Antonio, Texas, U.S., January 11, 2022.
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Students return to school with coronavirus disease (COVID-19) prevention measures in place, in San Antonio, Texas, U.S., January 11, 2022.
Students return to the classroom amid Omicron surge