also: アウトブレーク
noun
Primarily used in medical or epidemiological contexts to refer to the sudden occurrence of a disease. Less commonly used for non-disease outbreaks compared to English.
新型インフルエンザのアウトブレイクが報告された。
An outbreak of a new strain of influenza was reported.
保健所はアウトブレイクの原因を調査している。
The public health center is investigating the cause of the outbreak.