What is the primary function of active immunization?

The primary function of active immunization is to stimulate the production of antibodies in response to antigens. This process occurs when a vaccine containing a weakened or inactivated form of a pathogen, or parts of it, is introduced into the body. The immune system recognizes these antigens as foreign and responds by producing specific antibodies. This not only helps to eliminate the introduced antigens but also prepares the immune system for future encounters with the actual pathogen, creating a memory that allows for a more rapid and effective response should re-exposure occur.

Active immunization is a crucial strategy in disease prevention, as it helps the body to develop its own robust immune response rather than relying on passive immunity, which involves receiving antibodies from an external source. This is why active immunization is essential for long-lasting protection against infectious diseases.