👉 Infection occurs when a pathogen, such as bacteria, viruses, fungi, or parasites, enters the body and begins to multiply, often overwhelming the body's natural defenses. This can happen through various routes, including ingestion, inhalation, or direct contact. Once inside, the pathogen can cause damage by disrupting normal cellular functions, triggering an immune response, or producing toxins. The body's immune system typically fights infection by recognizing and attacking the invader; however, if the pathogen is too virulent or the immune response is insufficient, it can lead to illness or disease. Symptoms of infection vary widely depending on the pathogen and affected area but often include fever, inflammation, pain, and swelling. Treatment usually involves antibiotics for bacterial infections, antiviral medications for viruses, antifungal agents for fungi, or other specific therapies, aiming to eliminate the pathogen and support the body's recovery.
