Otitis media with effusion does not necessarily follow acute otitis media. Theories to explain the development of middle ear effusion in this case include the secretion of fluid from inflamed middle ear mucosa.
About Vaccine Information Statements. Vaccine Information Statements (VISs) are information sheets produced by the Centers for Disease Control and Prevention (CDC). VISs explain both the benefits and risks of a vaccine to adult vaccine recipients and the parents or legal representatives of. vaccinees who are children and adolescents.
A child being immunized against polio. Immunization, or immunisation, is the process by which an individual's immune system becomes fortified against an agent (known as the immunogen).he most important elements of the immune system that are improved by immunization are the T cells, B cells, and the antibodies B cells produce.