Endemic: illness withint a particular population, environment, or region. Examples of endemic diseases include chicken pox that occurs at a predictable rate among young school children in the United States and malaria in some areas of Africa. Epidemic: An outbreak of disease that attacks many peoples at about the same time and may spread through one or several communities. Pandemic: When an epidemic spreads throughout the world.

Uses facts, data, evidence, scientific studies, and other objective or scientifically derived information; tested; shown to work; proven to work

Openness or closeness to or not protected from something that can cause harm or sickness; chance of getting sick or being harmed; contact with a chemical by swallowing, breathing, or touching.

Not safe, dangerous, harmful, bad, risky

Differences in health among groups of people.

Body’s natural defenses against germs and sickness, body’s ability to fight germs and sickness

How often an event happens in a group of people in a certain period of time.

Time elapsed between a person being infected (when the germ enters the person’s body) and the first signs of sickness

When germs enter the body and cause illness

Sicknesses caused by germs, such as bacteria, viruses, and fungi, that enter the body and grow in number; some of these germs spread from one person to another, and some spread in air, water, food, soil, insects or animals.