An individual immunized for rubella has what type of immunity?

An individual immunized for rubella has what type of immunity?

• A. Active immunity
• B. Passive immunity
• C. Innate immunity
• D. Herd immunity

Answer: (A)

Active immunity is generated when the immune system is exposed to an antigen and responds by producing specific antibodies and memory cells. Vaccination against rubella introduces the antigen in a controlled way, prompting B cells to produce rubella-specific antibodies and to form memory B and T cells. This memory allows a rapid and robust response if the person encounters the virus again, providing long-lasting protection. This differs from passive immunity, where antibodies are acquired from another person or source and no lasting immune memory is formed. Innate immunity is the body's immediate, non-specific defense present from birth and not tailored by vaccination. Herd immunity describes protection of a population when a large portion is immune, reducing spread, rather than the mechanism by which an individual gains immunity. So, being immunized for rubella yields active (specifically adaptive) immunity.

Active immunity is generated when the immune system is exposed to an antigen and responds by producing specific antibodies and memory cells. Vaccination against rubella introduces the antigen in a controlled way, prompting B cells to produce rubella-specific antibodies and to form memory B and T cells. This memory allows a rapid and robust response if the person encounters the virus again, providing long-lasting protection.

This differs from passive immunity, where antibodies are acquired from another person or source and no lasting immune memory is formed. Innate immunity is the body's immediate, non-specific defense present from birth and not tailored by vaccination. Herd immunity describes protection of a population when a large portion is immune, reducing spread, rather than the mechanism by which an individual gains immunity.

So, being immunized for rubella yields active (specifically adaptive) immunity.