Immunization and vaccination
Immunization may be active (introduction of a vaccine) or passive (introduction of immunoglobulin/antibodies). A vaccine is a substance that can induce active immunity. Vaccination , by definition, is the introduction of a vaccine, and is, therefore, synonymous with active immunization. Some descriptions include the word vaccination , where it is clear that vaccination is intended. Other descriptions have preferred terms with the word vaccination , and synonyms with the word immunization , to include both active and passive immunization.
For example,
38598009 |Measles-mumps-rubella vaccination (procedure)| has vaccination in all descriptions
86198006 |Influenza vaccination (procedure)| has the synonym, influenza immunization
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