What is the term for an infectious disease that spreads from one person to another?

The correct term for an infectious disease that spreads from one person to another is "contagious." This term specifically refers to diseases that can be transmitted through direct contact, respiratory droplets, or sometimes through surfaces that have been contaminated with infectious agents. Contagious diseases are often characterized by their ability to propagate easily within a population, which makes them a significant concern in public health.

In contrast, the term "endemic" refers to diseases that are consistently present in a particular geographic area or among a specific population, but may not necessarily spread from person to person. "Epidemic" describes an outbreak of a disease that exceeds the expected number of cases in a specific area during a specific time, which can include contagious diseases but is not limited to them. "Chronic" refers to conditions that persist over a long period of time and may not have an infectious cause, emphasizing duration rather than transmission. Understanding these distinct definitions enhances comprehension of how infectious diseases are classified and managed in healthcare settings.