Active immunity refers to the activation of an individual’s adaptive immune defenses. This type of immunity can be acquired through natural exposure to the disease-causing agent (such as an infection) or through vaccination.

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Adaptive immunity can be classified as either active or passive immunity.

Classifications of Adaptive Immunity

https://openstax.org/details/books/microbiology/

Microbiology covers the scope and sequence requirements for a single-semester microbiology course for non-majors. The book presents the core concepts of microbiology with a focus on applications for careers in allied health. The pedagogical features of the text make the material interesting and accessible while maintaining the career-application focus and scientific rigor inherent in the subject matter. Microbiology’s art program enhances students’ understanding of concepts through clear and effective illustrations, diagrams, and photographs.

Microbiology is produced through a collaborative publishing agreement between OpenStax and the American Society for Microbiology Press. The book aligns with the curriculum guidelines of the American Society for Microbiology.

OpenStax Microbiology Textbook

Active Immunity 

Passive immunity refers to the transfer of antibodies from another individual or animal. Passive immunity can be described in 2 ways:
 - Artificial Passive Immunity
 - Natural Passive Immunity

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