An outbreak refers to a sudden rise in the occurrence of a disease or medical condition within a specific area or community. It typically implies that the number of cases exceeds what is normally expected for that place or group.
Example: A worldwide polio outbreak occurred in the early 1900s.
Outbreaks can vary in scale — from local incidents confined to a school or neighborhood to global events affecting multiple continents. The term is most often used in epidemiology to describe the early stage of an epidemic or pandemic.
An outbreak marks the rapid and unexpected spread of a disease beyond its usual level in a given population.
Author’s summary: The word “outbreak” denotes a sudden and abnormal surge of a disease affecting a specific region or population group.