Ключевые слова: acute, antibodies, blood, blue, blur, care, cell, cholera, chronic, cold, contagious, convalescence, cure, destruction, diagnosis, diphtheria, disease, flu, focus, genotype, health, healthy, hepatitis, illness, immunity, infect, infection, inflammation, influenza, injection, liver, medical, medicament, medicine, needle, pox, prevention, remission, selective, symptoms, syringe, text, treatment, typhoid, vaccinate, vaccination, vaccine, virus,