👉 Infection is a biological process where a pathogen, such as a virus, bacteria, fungus, or parasite, invades and takes control of a host's cells or tissues, 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 typically responds by attempting to eliminate the invader through various mechanisms, but if the infection persists or overwhelms the immune response, it can result in illness. Infections can be acute, lasting for a short time, or chronic, persisting over a longer period, and they can affect any part of the body, from the skin to internal organs. Understanding the dynamics of infection is crucial for developing treatments and preventive measures.
