The fact sheet provides basic information about Hib Disease in young children, which may involve a bacterial meningitis causing mental retardation, hearing loss, partial blindness, speech disorders, partial paralysis, behavioral problems, or seizures. Stressed is prevention of Hib Disease through immunization. The question and answer format provides information on: What is Hib Disease? Why is the Association for Retarded Citizens concerned about Hib Disease? Who is most susceptible to Hib? How serious is bacterial meningitis? How is Hib treated? How can Hib Disease be prevented? How many children can now be protected from Hib Disease? (DB)