Immunity that is not inherited but is acquired through exposure or vaccination is known as what?

• A. Acquired Immunity
• B. Passive Immunity
• C. Active Immunity
• D. Natural Immunity

Answer: (A)

Acquired immunity is immunity that isn’t present at birth and is gained after exposure to a pathogen or through vaccination. When the body encounters a specific invader or receives a vaccine, it learns to recognize the antigen and builds targeted antibodies and memory cells. This learning process is what lets you fight off future infections by the same pathogen more quickly. This is different from innate immunity, which you’re born with and doesn’t require prior exposure. The other option, passive immunity, would involve protection gained from another person or animal (like maternal antibodies or antibody injections) and doesn’t depend on the body’s own response.