Background Information

Active Immunizations

• A person’s immunologic defenses are stimulated which can occur by exposing a person to a live pathogen, getting the disease, and becoming immune as a result of the primary immune response.
• Artificially acquired active immunity can be induced by a vaccine or a substance which contains the infectious agent which may be:
  • Live (attenuated) or
  • Killed (inactivated)

Passive Immunizations

• Human or animal antibody once formed is removed from the host and transferred to a recipient to provide immediate passive immunity.
• Antibodies pass from mother to infant (can last up to 6 months).
• Antibodies pass from mother to infant via breast milk.

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