pathogenic agents

Pathogenic agents are microorganisms or entities that can cause disease in humans, animals, or plants. These include bacteria, viruses, fungi, and parasites. They invade the body, multiply, and interfere with normal functions, leading to illness. For example, bacteria like Staphylococcus can cause skin infections, viruses like the flu virus cause respiratory illnesses, fungi like athletes' foot infect the skin, and parasites like worms can live inside the body. Understanding these agents helps in preventing, diagnosing, and treating infections, reducing the spread of disease and promoting health.