Ключевые слова: back to school, backpack, backyard, boy, brick wall, building, caucasian, child, coronavirus, covid, covid19, education, epidemic, face mask, flu, go, health, influenza, mask, medical, morning, one, outdoor, pandemic, person, prevent, prevention, protect, protective, quarantine, school, schoolboy, schoolchildren, student, summer, teen, teenager, virus, walk, way, window, yard,