Porcine circovirus type 2 and porcine reproductive and respiratory syndrome virus alone or associated are frequent intralesional detected viruses in porcine respiratory disease complex cases in Northern Italy.

Methods: This study aimed to examine the pathological impact of Porcine Circovirus type 2 (PCV2) and Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) through histological and immunohistochemical analysis of 79 cases of Porcine Respiratory Disease Complex (PRDC) collected from 22 farms in Northern Italy. Lung tissue and several lymphoid organ samples were deployed to associate PCV2-positive stain with Circovirus-associated Diseases (PCVD).

Results: The most common lung lesion observed was interstitial pneumonia, alone or combined with bronchopneumonia.

Porcine Ileitis in Italy and Its Association with Porcine Circovirus Type 2 (PCV2) Infection.

The objective of this study was to employ a diagnostic algorithm, which involves detecting positive farms by stool PCR followed by PCR and histology/immunohistochemistry on ileum samples, for diagnosing proliferative enteritis in Northern Italy. The primary aim was to examine the relationship between the gold standard of diagnostics, namely histology and immunohistochemistry, and PCR in acute and chronic cases of enteritides. An additional goal was to investigate the coinfection of with porcine circovirus type 2 (PCV2).