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outbreak

OWT-brayk /ˈaʊtbreɪk/

nounB2TOEFLIELTS

generaljournalistic

A sudden occurrence or eruption of something unwelcome, such as a disease, war, or violence.

Epidemiologically, an outbreak is a sudden increase in cases within a specific, restricted geographical area (e.g., a hospital ward or town).

The story behind the word. A Germanic compound formed in Middle English, literally meaning 'a breaking out' or sudden burst through confinement. It moved from physical structures breaking open to describing violent events and localized disease spikes.

Word relationships

flare-up: Flare-up implies a sudden recurrence of a previously quiet condition.
surge: Surge stresses a dramatic increase in volume or numbers.

containment: The act of keeping an infection within controlled boundaries.
cessation: The stopping or ending of an event.

Commonly confused with

epidemic: An outbreak is localized to a small community or institution; an epidemic covers a broader region.

Word family

breakout (noun): An escape from confinement (e.g., prison breakout).
break out (verb): To start suddenly.

Collocations

disease outbreak
trace an outbreak
outbreak investigation
outbreak of violence

Example sentences

"Health inspectors traced the salmonella outbreak to contaminated spinach originating from a single regional processing farm." Food safety outbreak
"The hospital instituted immediate sterilization protocols following an outbreak of drug-resistant bacteria in the intensive care unit." Hospital hygiene

Memory hook

OUT-BREAK = disease BREAKS OUT of control in a local town. Outbreak = Breaking out in a localized location.

When not to use

Avoid using for long-established chronic health problems like heart disease.

Fun facts

In public health, even two connected cases of a rare, high-consequence disease like Ebola can be formally classified as an outbreak.