Ключевые слова: 40s, adult, blood stains, caucasian, close up, concept, concerned, contagious, disease, epidemic, epidemiologist, epidemiology, expertise, eyewear, forbidden, goggles, hand, health, healthcare, holding, illness, male, man, mask, medical, medicine, occupation, outbreak, pandemic, professional, protective clothing, researcher, respiratory, scientific, scientist, sick, specialist, virology, virus, worker,