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Photo . Native oyster farm in Port Phillip Bay ( Photo courtesy of Tracey Bradley )
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“ Fish kills ” are a specific type of outbreak occurring in the wild . Often , they are reported when there have been noticeable numbers of fish affected and as such can be considered an outbreak .
Emergency animal diseases represent a special situation where even one case requires particular attention until ruled out as a false positive or confirmed as a true positive . The same principles of outbreak investigation apply but we would not wait until we have a number of cases .
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