👉 Infection refers to the process by which a pathogen, such as a virus, bacterium, fungus, or parasite, enters and begins to multiply within a host organism, leading to illness or disease. This entry can occur through various routes, including respiratory droplets, contaminated food or water, vectors like insects, or direct contact with infected bodily fluids. Once inside the host, the pathogen interacts with host cells, potentially causing damage, triggering an immune response, and disrupting normal physiological functions. The severity and outcome of an infection depend on factors such as the type of pathogen, the host's immune system, and environmental conditions. Effective prevention and treatment strategies often focus on reducing exposure to pathogens and bolstering the body’s defenses through vaccines, antibiotics, or other medical interventions.
