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Occurring at the same time among an unusually large number of animals in a particular geographic area. Used of a disease.
An epizootic disease.

ep′i·zo·ot′i·cal·ly adv.


(Veterinary Science) (of a disease) suddenly and temporarily affecting a large number of animals over a large area
(Veterinary Science) an epizootic disease. Compare enzootic
ˌepizoˈotically adv


(ˌɛp ə zoʊˈɒt ɪk)

1. (of a disease) spreading quickly among animals. Compare enzootic (def. 1).
2. an epizootic disease.
[1740–50; < French épizootique, on the model of épidémique epidemic; see epi-, zoo-, -otic]
ep`i•zo•ot′i•cal•ly, adv.

epizootic, epizooty

a disease affecting many animals at the same time; an epidemic amongst animals. — epizootic, adj.
See also: Animals
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.epizootic - (of animals) epidemic among animals of a single kind within a particular region; "an epizootic disease"
animal, animate being, beast, creature, fauna, brute - a living organism characterized by voluntary movement
epidemic - (especially of medicine) of disease or anything resembling a disease; attacking or affecting many individuals in a community or a population simultaneously; "an epidemic outbreak of influenza"
References in periodicals archive ?
Competitive ELISA for the detection of antibodies against epizootic haemorrhagic disease of deer virus.
and that greater account should be taken of animal protection considerations in combating epizootic diseases".
Surveillance detected epizootic activity (15 WNV-infected dead birds and five infected mosquito pools in Staten Island; 10 infected dead birds in Hudson County; and two infected dead birds and one infected live hatch-year bird in Brooklyn) before onset of human illness on July 20 (first Staten Island case), August 6 (Hudson County), and August 15 (first Brooklyn case).
To work out the questions of cooperation, the chairmen of the anti-epizootic commissions were invited to attend the exercises under the administrations of the municipal districts of the Leningrad Region, the heads and epizootic doctors of the state budgetary veterinary institutions, heads of hunting farms, experts of the Committee for the Protection, Control and Regulation of the Use of Wildlife in the Leningrad Region.
Farmers, agricultural producers and industrial enterprises are sometimes irresponsible to implement the preventive measures on immunization and vaccination of livestock, which worsens the epizootic situation in the country and threatens the food security of the citizens of Kyrgyzstan," he said on November 10 during the press conference in Bishkek.
Migrations of harp seals into the North Sea may have initiated the epizootic in harbor seals.
Editorial Note: These data suggest an expanding zone of epizootic transmission in four northeastern states with viral activity most intense in the NYC area.
Experts of the International Epizootic Bureau (IEB) will assist Kyrgyzstan to work out a strategic plan for the development of veterinary service in the country for 2014-2017, the press service of the State Inspectorate for Veterinary and Phytosanitary Safety said.
To the Editor: Bluetongue and epizootic hemorrhagic disease are caused by orbiviruses transmitted by Culicoides spp.
From February to November 2001, veterinary services had to slaughter more than four million animals to overcome the epizootic disease, thereby paralysing entire areas of the British economy.
This report describes the spread of this epizootic of raccoon rabies through mid-Atlantic and northeastern states and into Canada.
Cake, the sunflower content of raw protein in the recalculation on absolutely dry matter should be not less than 39%, guest 11246-96, the import of goods from adverse, acute infectious regions in the epizootic situation of african swine fever is forbidden, raw materials must comply with the provisions of the law.