Anti-organism antibodies are essential tools in the fight against infectious diseases, designed to specifically target and neutralize pathogens such as bacteria, viruses, or fungi. These antibodies recognize unique antigens on the surface of these organisms, facilitating their detection and elimination by the immune system. In diagnostic applications, anti-organism antibodies are employed in various assays to accurately identify infections, allowing for timely and appropriate medical intervention. Therapeutically, they are used in treatments to confer passive immunity, helping to bolster the body’s natural defenses. The development and application of anti-organism antibodies are pivotal in advancing strategies for the prevention, diagnosis, and treatment of numerous infectious diseases.