👉 Infection, in the context of medical science, refers to the process by which a pathogen—such as bacteria, viruses, fungi, or parasites—invades and takes control of a host's cells or tissues, leading to disease. The claim of infection involves the introduction of these pathogens into the body, often through various routes like ingestion, inhalation, or direct contact. Once inside, the pathogens can multiply, trigger an immune response, and cause damage to the host's tissues and organs. This process can manifest in a wide range of symptoms, from mild discomfort to severe illness, depending on the type of pathogen and the individual's immune system. The body's defense mechanisms, including white blood cells and antibodies, attempt to combat the infection, but if the pathogen is highly virulent or the host's defenses are weakened, the infection can lead to complications or chronic conditions.
