👉 Infection is a biological process where a pathogen, such as a bacterium, virus, fungus, or parasite, enters and takes control of a host organism, leading to disease. This occurs when the pathogen breaches the body's natural barriers, like the skin or mucous membranes, and begins to multiply or cause damage. The immune system then responds by initiating defense mechanisms, including inflammation and the production of antibodies, to combat the invader. However, if the pathogen is virulent or the host's defenses are weakened, the infection can progress, potentially causing symptoms and complications. Understanding infection is crucial for developing treatments and preventive measures, such as vaccines and antibiotics, to protect against and manage infectious diseases.
