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- Dictionaryoutbreak/ˈaʊtbreɪk/
noun
- 1. a sudden occurrence of something unwelcome, such as war or disease: "the outbreak of World War II" Similar
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noun
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In epidemiology, an outbreak is a sudden increase in occurrences of a disease when cases are in excess of normal expectancy for the location or season. It may affect a small and localized group or impact upon thousands of people across an entire continent. The number of cases varies according to the disease-causing agent, and the size and type of previous and existing exposure to the agent. Outbre... Wikipedia