What does the term infection mean in the context of health?

In the context of health, the term infection specifically refers to the invasion by disease-causing organisms, such as bacteria, viruses, fungi, or parasites, that enter the body, multiply, and can potentially lead to illness. This process can trigger a variety of immune responses as the body attempts to fight off these invaders.

Understanding this concept is crucial in various fields of health and beauty, as infection control is key in preventing the spread of pathogens, particularly in environments such as salons where tools and surfaces must be sanitized to protect clients. Options representing good health, immunity, or reactions to medication do not accurately define what infection means; instead, they relate to different aspects of health and disease that pertain to prevention or treatment rather than the initial occurrence of pathogens entering the body.