Changes

<br>Some serovars can become endemic in a herd causing minimal disease but presenting a major zoonotic concern.

<br>Some serovars can become endemic in a herd causing minimal disease but presenting a major zoonotic concern.

Diagnosis is made on a combination of clinical signs and identification of the orgainism by laboratory testing.

Diagnosis is made on a combination of clinical signs and identification of the organism by laboratory testing.

==Laboratory Tests==

==Laboratory Tests==