What is an example of a noncontagious disease?

Hypertension is classified as a noncontagious disease because it is not caused by infectious agents and cannot be transmitted from one person to another. Instead, hypertension, often referred to as high blood pressure, develops due to a combination of genetic, lifestyle, and environmental factors. These may include diet, physical activity, and stress levels, which influence an individual's cardiovascular health over time.

In contrast, diseases like flu, COVID-19, and measles are contagious, meaning they can be spread from person to person through various means such as respiratory droplets or direct contact. Understanding the difference between contagious and noncontagious diseases is crucial in infection control and public health, as it helps in implementing appropriate preventive measures and managing patient care effectively.