👉 The term "infection" in a biological context refers to the invasion and multiplication of pathogenic microorganisms, such as bacteria, viruses, fungi, or parasites, within a host organism, leading to disease. This process involves the pathogen breaching the host's physical barriers, like the skin or mucous membranes, and establishing itself in tissues or organs. The infection can trigger an immune response, which may attempt to eliminate the invader but can sometimes cause harm to the host, resulting in symptoms of illness. Infections can be acute, lasting for a short period, or chronic, persisting over time, and they can vary widely in severity and impact, from mild discomfort to life-threatening conditions. Understanding infection is crucial for developing treatments and preventive measures, such as antibiotics, antivirals, vaccines, and hygiene practices, to manage and control the spread of diseases.
