👉 Infection refers to the process by which a pathogen, such as a virus, bacterium, or parasite, enters and begins to multiply within a host organism, leading to disease. This can occur when the pathogen breaches the body's natural barriers, like the skin or mucous membranes, and then proliferates in various tissues or organs. Infection can trigger an immune response, which may attempt to eliminate the pathogen but can sometimes cause harm to the host, leading to symptoms of illness. Understanding infection is crucial for developing treatments and preventive measures, such as antibiotics, antivirals, vaccines, and hygiene practices, to control and reduce its impact on human health.
