What describes the ability of a pathogen or its antigens to stimulate an immune response?

Prepare for the Introduction to Epidemiology and Concepts of Infectious Disease Test with detailed study materials and multiple-choice questions. Arm yourself with knowledge and insights to excel in infectious disease diagnostics.

Multiple Choice

What describes the ability of a pathogen or its antigens to stimulate an immune response?

Explanation:
Immunogenicity is the ability of a pathogen or its antigens to stimulate an immune response. It means the immune system recognizes the pathogen components and mounts a response, such as antibody production and T-cell activation. This is different from infectivity (the capacity to establish infection), pathogenicity (the capacity to cause disease once infected), and virulence (the severity of disease). Some agents can be infectious but poorly immunogenic, or highly immunogenic without causing disease. Vaccines aim to maximize immunogenicity to build protective immunity.

Immunogenicity is the ability of a pathogen or its antigens to stimulate an immune response. It means the immune system recognizes the pathogen components and mounts a response, such as antibody production and T-cell activation. This is different from infectivity (the capacity to establish infection), pathogenicity (the capacity to cause disease once infected), and virulence (the severity of disease). Some agents can be infectious but poorly immunogenic, or highly immunogenic without causing disease. Vaccines aim to maximize immunogenicity to build protective immunity.

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