Infection and Immunity

Infection occurs when harmful microorganisms, like bacteria, viruses, or fungi, invade the body and multiply, potentially causing illness. Immunity is the body's defense system that recognizes and fights these invaders, often through specialized cells and antibodies. When you're exposed to a germ, your immune system responds to neutralize it, preventing disease. Sometimes, immunity can be developed through natural infection or vaccination, providing future protection. Overall, infection is the entry and growth of harmful agents, and immunity is the body's way of defending itself and maintaining health.