👉 Infection is a biological process where a pathogen, such as a bacterium, virus, fungus, or parasite, enters a host and begins to multiply or cause disease. This entry can occur through various routes, including ingestion, inhalation, or direct contact. Once inside the body, the pathogen interacts with host cells, often evading or suppressing the immune system to establish itself. The infection can lead to symptoms ranging from mild irritation to severe illness, depending on the type of pathogen and the host's immune response. Treatment typically involves targeting the pathogen directly, such as with antibiotics for bacterial infections, antiviral drugs for viruses, or antifungal medications for fungal infections, aiming to eliminate the infection and restore health.
