schoolchildren masks keeping distance prevent coronavirus pandemic social distancing |
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| navigate by keyword : 2019ncov abstract book boy caution chalkboard child childhood classroom coronavirus covid19 disease distance distancing education elementary epidemic full girl healthcare infected infection interior knowledge length little mask outbreak pandemic prevention protect protection protective pupil quarantine respiratory risk rules safety school schoolboy schoolchildren schoolgirl social spreading standing study together vector virus yellow |
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| Schoolchildren in masks keeping distance to prevent coronavirus pandemic social distancing concept school classroom interior horizontal full length vector illustration |
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