Clinical Signs
Both PMWS and porcine dermatitis and nephropathy syndrome (PDNS) are associated to PCV2. Many pigs affected by the circovirus also seem to develop secondary bacterial infections, like Glässer disease (Haemophilus parasuis), pulmonary pasteurellosis, colibacilosis, salmonellosis and others. Dissected morbid pigs showed lesions in multiple organs, especially in lymphoid tissues, giving rise to the term "multisystemic".
"The distinguishing lesion caused by PCV2 is an inflammatory infiltration by histocite cells with variable intensity, located in the lymphoid organs, liver, kidney, and lung"
Wasting pigs is the most common sign of PMWS infection, increasing the mortality rate significantly.
Read more about this topic: Postweaning Multisystemic Wasting Syndrome
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