Extensive pandemic disease, with a stable number of infected people, such as seasonal influenza recurrence, is generally excluded, as it occurs simultaneously in large areas of the world rather than spreading worldwide.
Isifo esithelelanayo esinesibalo abathelelekile abaziwayo esifana nomkhuhlane wokushintsha kwezikhathi zonyaka azibalwa kubhubhane ngoba zivela ngesikhathi esisodwa ezindaweni ezahlukene emhlabeni kunokuthi zibhebhetheke emhlabeni wonke.