👉 Infection refers to the process by which a pathogen, such as a virus, bacterium, fungus, or parasite, enters and establishes itself within a host organism, leading to disease. This can occur through various routes including ingestion, inhalation, skin contact, or vector-borne transmission. Once inside, the pathogen begins to multiply and interact with the host's cells, tissues, or bodily fluids, often triggering an immune response. If the pathogen is virulent enough, it can cause damage or disrupt normal bodily functions, resulting in symptoms ranging from mild discomfort to severe illness or even death. Effective infection prevention and treatment strategies are crucial to mitigate the impact of infectious diseases on individuals and public health.
