+A [Vaccine](/wiki/vaccine) is a biological preparation providing [Immunity](/wiki/immunity) to a specific [Disease](/wiki/disease). It introduces weakened or inactive forms of a pathogen, training the body's defenses to recognize and fight future infections. This simple, preventative measure safeguards public health.
+## See also
+- [Immunization](/wiki/immunization)
+- [Public Health](/wiki/public_health)
+- [Pathogen](/wiki/pathogen)
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