an outbreak of disease that spreads quickly and affects many individuals at the same time, an occurrence of disease that is temporarily of high prevalence, inimeste hulgaline haigestumine mingisse ägedasse nakkushaigusse teatud piirkonnas, nakkushaiguse puhang, mis nõuab nakkustõrje meetmete laiaulatuslikku rakendamist, mingi nakkushaiguse laiaulatuslik puhang