An epizootic is the nonhuman equivalent of an epidemic, meaning that large numbers of animals are infected with a disease. As in epidemics, high population density is a major contributing factor to epizootics, with aquaculture being one notable example of an industry plagued by disease because of the large number of fish in a small area. An epidemic is generally a widespread disease that affects many individuals in a population. ... Population density can be used as a measurement of any tangible item. ... Aquaculture (sometimes misspelled aquiculture) is the cultivation of aquatic organisms, such as fish, shellfish, algae and other aquatic plants. ...
Behavior displayed by the dying deer is consistent with epizootic hemorrhagic disease or one similar to it, FandG conservation officer Dave Cadwallader said.
Epizootic hemorrhagic disease is common in southern states with high summer temperatures, he said.
It was considered a new disease of deer, and the name "epizootic hemorrhagic disease" was suggested to describe its main clinical and pathological features.
Since these initial confirmed outbreaks of EHD, documented epizootics have occurred in white-tailed deer in South Dakota, North Dakota, Wyoming and Alberta, Canada.
Die-offs involving small numbers of deer - as experienced in South Dakota and Nebraska - occur almost annually, and the disease appears to be enzootic in these areas.
Useful aids in obtaining a diagnosis are the epizootic nature of the disease, its seasonal occurrence, and its spectacular hemorrhagic lesions.
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