Question

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a flu vaccine is an example of which of the following?
artificial passive immunity
artificial active immunity
natural active immunity
natural passive immunity

Explanation:

• Artificial passive immunity: Involves receiving pre - made antibodies (e.g., from immune globulin), not a vaccine.
• Artificial active immunity: A vaccine (like the flu vaccine) is introduced to stimulate the body's immune system to produce its own antibodies and memory cells.
• Natural active immunity: Occurs when a person gets infected with a pathogen naturally (not through a vaccine).
• Natural passive immunity: Antibodies are passed from mother to child (e.g., through placenta or breast - milk), not through a vaccine.

Answer:

Artificial active immunity