Select the best response to the question. A patient who contracts a strain of the flu has immunity in the future against that same strain of the flu. This is an example of which type of immunity?

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Natural active immunity occurs when the immune system is exposed to and fights off a pathogen, resulting in immunity to that specific pathogen in the future. In this case, the patient who contracts the strain of flu develops immunity to that specific strain in the future, which is an example of natural active immunity.

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