Which term describes a specific resistance of the body to infection, which can be natural or developed after exposure?

Which term describes a specific resistance of the body to infection, which can be natural or developed after exposure?

• A. Pathogen
• B. Carrier
• C. Vaccine
• D. Immunity

Answer: (D)

Immunity is the body's resistance to infection, and it can be present from birth (natural or innate immunity) or develop after exposure to a pathogen or through vaccination (acquired or adaptive immunity). The acquired form is specific to the invading organism and involves memory that proves more effective on subsequent encounters. The other terms refer to the disease-causing agent (pathogen), someone who harbors the pathogen without symptoms (carrier), or a preparation that stimulates immunity (vaccine). So the correct concept describing this specific, adaptable resistance is immunity.

Immunity is the body's resistance to infection, and it can be present from birth (natural or innate immunity) or develop after exposure to a pathogen or through vaccination (acquired or adaptive immunity). The acquired form is specific to the invading organism and involves memory that proves more effective on subsequent encounters. The other terms refer to the disease-causing agent (pathogen), someone who harbors the pathogen without symptoms (carrier), or a preparation that stimulates immunity (vaccine). So the correct concept describing this specific, adaptable resistance is immunity.