IMMUNOLOGY

Detailed explanation-1: -Natural immunity is acquired from exposure to the disease organism through infection with the actual disease. Vaccine-induced immunity is acquired through the introduction of a killed or weakened form of the disease organism through vaccination.

Detailed explanation-2: -The process is more energy-intensive compared to the innate immune response and is therefore reserved for pathogens not effectively removed by the body’s initial defense. Immunity mounted by the active, antigen-specific response provides decades of protection against that antigen.

Detailed explanation-3: -Two types of immunity exist-active and passive: Active immunity occurs when our own immune system is responsible for protecting us from a pathogen. Passive immunity occurs when we are protected from a pathogen by immunity gained from someone else.

Detailed explanation-4: -Adaptive immunity: Adaptive (or active) immunity develops throughout our lives. We develop adaptive immunity when we’re exposed to diseases or when we’re immunized against them with vaccines.

Detailed explanation-5: -Answers of MCQ Immunology: Basic Concepts (71-85) It’s the easiest MCQ in microbiology. You have to know only the definition of naturally acquired active immunity. Naturally acquired active immunity is produced when the person is exposed to an infectious agent. So the answer is “d”.