Ключевые слова: adult, arm, background, bacteria, care, chickenpox, child, closeup, diphtheria, disease, doctor, epidemic, female, flu, girl, hand, health, immunity, infection, influenza, injection, isolated, kid, little, measles, medical, meningococcal, mumps, needle, people, pertussis, polio, prevention, primary, protection, rabies, receiving, school, smallpox, syringe, tetanus, treatment, tuberculosis, vaccination, vaccine, varicella, virus, white, woman, young,