Ключевые слова: adult, background, bacterium, care, cellular, clinic, clinical, contagious, covid19, crown, disease, doctor, face, flu, health, horizontal, hospital, illness, indoor, infection, isolated, laboratory, male, man, mask, medic, medical, medicine, mobile, occupation, people, person, physician, portrait, practitioner, profession, professional, protection, protective, safety, specialist, stethoscope, surgical, uniform, virus, wear, wearing, white, working,