Ключевые слова: air, allergic, backpack, black and white monochrome, corona virus, corona viruses, coronavirus, coronavirus mask, dark, diagnosis, disease, epidemic, face, fever, flu, global, health, illness, infection, jacket, man, man with mask, medical, medical mask, microbe, negative, pandemic, pathogenic, pathology, person, pollution, prevention, protection, scary, sick, sickness, silhouette, student, symptoms, treatment, virus, wall,