Long-term protection after recovering from infection is due to what type of immunity?

Long-term protection after recovering from infection is due to what type of immunity?

• A. Passive immunity
• B. Active immunity with memory
• C. Innate immunity
• D. Autoimmunity

Answer: (B)

This is about adaptive immunity that forms lasting memory. When the body first encounters a pathogen, specific B and T cells respond and some of these cells become memory cells. These memory cells persist for a long time and respond rapidly if the same pathogen shows up again, providing long-lasting protection after recovery. This is active immunity with memory because the body has actively fought the infection and created durable immune memory. In contrast, passive immunity provides temporary protection from antibodies made in another organism or person, and it wanes over weeks to months. Innate immunity is the non-specific first line of defense and does not create lasting memory. Autoimmunity is an inappropriate immune response against the body's own tissues and is not protective.

This is about adaptive immunity that forms lasting memory. When the body first encounters a pathogen, specific B and T cells respond and some of these cells become memory cells. These memory cells persist for a long time and respond rapidly if the same pathogen shows up again, providing long-lasting protection after recovery. This is active immunity with memory because the body has actively fought the infection and created durable immune memory.

In contrast, passive immunity provides temporary protection from antibodies made in another organism or person, and it wanes over weeks to months. Innate immunity is the non-specific first line of defense and does not create lasting memory. Autoimmunity is an inappropriate immune response against the body's own tissues and is not protective.