Vaccination Flashcards
Immune
resistant to a particular infection or toxin owing to the presence of specific antibodies or sensitized white blood cells.
Vaccine
a substance used to stimulate the production of antibodies and provide immunity against one or several diseases.
Antibody
large, Y-shaped protein used by the immune system to identify and neutralize foreign objects such as pathogenic bacteria and viruses. The antibody recognizes a unique molecule of the pathogen, called an antigen.
Antigen
antigen is a molecule or molecular structure, such as may be present on the outside of a pathogen, that can be bound by an antigen-specific antibody or B-cell antigen receptor
Active Artificially acquired immunity
Artificially acquired active immunity is protection produced by intentional exposure of a person to antigens in a vaccine, so as to produce an active and lasting immune response.
Naturally acquired passive immunity
Naturally acquired passive immunity occurs during pregnancy, in which certain antibodies are passed from the maternal blood into the fetal bloodstream in the form of IgG
Passive artificially acquired immunity
Artificially acquired passive immunity is protection acquired by giving a person an injection or transfusion of antibodies made by someone else.
Active naturally acquired immunity
Naturally acquired active immunity occurs when the person is exposed to a live pathogen, develops the disease, and becomes immune as a result of the primary immune response.