Ключевые слова: antibody, antigen, antigenic, baby, checkup, child, diagnosis, disease, doctor, drugs, epidemic, fever, health care, hospital, illness, immune, immunity, immunization, immunology, infection, injection, inoculation, kid, laboratory, medical, medicine, nerve, patient, pharmaceutical, pharmacy, physician, plague, polio, poliomyelitis, research, science, sick, sickness, syringe, therapy, treatment, vaccinate, vaccination, vaccine, virus,