Ключевые слова: adult, antivirus, care, caucasian, clinic, diagnosis, disease, doctor, epidemic, flu, health, healthcare, hospital, hygiene, illness, immunity, immunization, influenza, injection, laboratory, male, man, mask, medical, medicine, nurse, outbreak, pandemic, patient, physician, pneumonia, prevention, protection, quarantine, research, science, shot, sickness, solution, syringe, vaccination, vaccine, virus, woman,