An outbreak is an event that sometimes cannot be controlled for several months or years. The word "outbreak" is a term used in epidemiology. It describes what happens when a disease becomes widespread that first thought. An outbreak can affect a small group or affect thousands of people across the world. An outbreak can be epidemic.
- Common source - all victims got the disease from the same source (such as water pollution)
- Continuous source - when the disease continues to spread for a longer time.
- Point source - when the disease continues to spread for a short time.
- Propagated - disease is spread from person to person.
- Behavioral risk related - disease is spread by a person's behavior such as sexually transmitted diseases and malnutrition.
- Zoonotic - disease is spread from animal to animal.
- Patterns of an outbreak
- Endemic - a common disease such as influenza, measles, mumps, pneumonia, colds and small pox. This is characterized by a place, group or activity.
- Epidemic - when the disease affect a large group of people.
- Pandemic - when the disease affects people worldwide.