Disinfection & SafetyQuestion 23 of 100

Which best describes acquired immunity?

a.Protection a person is born with that resists all infection
b.Resistance developed after exposure to a pathogen or after vaccination
c.The body's physical barriers, such as unbroken skin
d.The ability of a disinfectant to kill spores

Explanation

Acquired immunity develops after the immune system encounters a pathogen naturally or through immunization, such as the hepatitis B vaccine. Natural immunity is what a person is born with, and unbroken skin is a component of that natural, non-specific defense. Spore-killing describes sterilization, not immunity.

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