Artificial immunity is best described as which of the following?

Artificial immunity is best described as which of the following?

• A. Deliberate exposure to antigens
• B. Nondeliberate exposure to antigens
• C. Immunity transferred from one individual to another
• D. Immune system responds to a harmful agent

Answer: (A)

Artificial immunity is immunity induced intentionally by exposing the immune system to antigens through vaccines. Vaccines introduce antigenic material to stimulate B and T cell responses and to establish immunological memory, so the body can respond quickly and effectively if the real pathogen is encountered later, without having to suffer the disease. This is different from natural exposure, which occurs through nondeliberate infection, and from transferring antibodies from another individual, which provides immediate but temporary protection (passive immunity). Deliberate exposure to antigens best fits artificial immunity.

Artificial immunity is immunity induced intentionally by exposing the immune system to antigens through vaccines. Vaccines introduce antigenic material to stimulate B and T cell responses and to establish immunological memory, so the body can respond quickly and effectively if the real pathogen is encountered later, without having to suffer the disease. This is different from natural exposure, which occurs through nondeliberate infection, and from transferring antibodies from another individual, which provides immediate but temporary protection (passive immunity). Deliberate exposure to antigens best fits artificial immunity.