(n): a sudden violent spontaneous occurrence (usually of some undesirable condition)
(adj): vs. endemic) (vs. ecdemic) -- ((especially of medicine) of disease or anything resembling a disease; attacking or affecting many individuals in a community or a population simultaneously
(adj): (of plants) epidemic among plants of a single kind especially over a wide area
(adj): (of animals) epidemic among animals of a single kind within a particular region
(adj): epidemic over a wide geographical area
(adj): likely to spread and cause an epidemic disease