Ключевые слова: antibiotics, background, care, closeup, concepts, contagion, crown, defenses, disease, doctor, flu, health, health care, hospital, hygienic, illness, influence, inject, injection, isolation, lifestyle, mask, material, medical, medicine, nobody, personal, protection, retroviral, sick, symptom, syringe, therapy, treatment, vaccination, vaccine, viral, virus, wellbeing,