Changes

==Diagnosis==

==Diagnosis==

===Clinical Signs===

===Clinical Signs===

The most common clinical presentation is abortion 2-4 weeks before term, still births and weak piglets which die shortly after birth are also seen.

The most common clinical presentation is the chronic form which results in abortion 2-4 weeks before term, still births and weak piglets which die shortly after birth are also seen.

* Late term abortion

* Late term abortion

* Still birth  

* Still birth  

* Anaemia

* Anaemia

<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.

==Treatment==

==Treatment==