👉 Infection refers to the process by which an invading microorganism, such as a bacterium, virus, fungus, or parasite, enters and establishes itself within a host organism, disrupting normal cellular functions and potentially leading to disease. This complex interaction begins when pathogens breach the body's defenses, often through breaches in physical barriers like skin or mucous membranes. Once inside, pathogens multiply and can cause harm by damaging tissues, triggering immune responses, or interfering with essential bodily processes. The introduction of infection is a critical aspect of medical science, as understanding its mechanisms is vital for developing effective treatments and preventive measures to combat a wide range of illnesses.
