Cyclospora Outbreak Norovirus Outbreak Infection Outbreak Measles Outbreak Food Outbreaks Virus Outbreak Vietnam Outbreak Definition Outbreak of Disease
| Outbreak | Tornado_outbreak | Outbreak_(film) | World_War_II | 2001_United_Kingdom_foot-and-mouth_outbreak | Outbreak_of_infection | 2009_H1N1_outbreak | Invasion_of_Poland | 1999_Oklahoma_tornado_outbreak | Attack_on_Pearl_Harbor | 2011_Germany_E._coli_O104:H4_outbreak | 1854_Broad_Street_cholera_outbreak | Outbreak_(band) | May_2004_tornado_outbreak_sequence | 2011_United_States_listeriosis_outbreak | 1993_Four_Corners_hantavirus_outbreak | Outbreak_(TMNT_2003_Episode) | Outbreak_(novel) |
Outbreak is a term used in epidemiology to describe an occurrence of disease greater than would otherwise be expected at a particular time and place. It may affect a small and localized group or impact upon thousands of people across an entire continent. Two linked cases of a rare infectious disease may be sufficient to constitute an outbreak. Outbreaks may also refer to epidemics, which affect a region in a country or a group of countries, or pandemics, which describe global disease outbreaks.
When investigating disease outbreaks, the epidemiology profession has developed a number of widely accepted steps. As described by the Centers for Disease Control and Prevention, these include the following:
Outbreak debriefing and review has also been recognized as an additional final step and iterative process by the Public Health Agency of Canada.
There are several outbreak patterns, which can be useful in identifying the transmission method or source, and predicting the future rate of infection. Each has a distinctive epidemic curve, or histogram of case infections and deaths.
Outbreaks can also be:
Patterns of occurrence are:
Outbreak legislation is still in its infancy and not many countries have had a direct and complete set of the provisions. However, some countries do manage the outbreaks using relevant acts, such as public health law.
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