👉 Infection refers to the process by which a pathogen, such as a virus, bacterium, or parasite, enters and takes control of a host organism, leading to illness or disease. This occurs when the pathogen breaches the body's natural barriers, like the skin or mucous membranes, and begins to multiply within the host's cells or tissues. The immune system then responds to the invasion, but if the pathogen is highly virulent or the host's defenses are weakened, the infection can progress, causing symptoms and potentially leading to complications. Understanding infection is crucial in medical science for developing treatments and preventive measures, such as antibiotics, vaccines, and hygiene practices, to combat and prevent diseases.
