scholarly journals Porcine circovirus type 2 (PCV2) antigen localisation and post-weaning multisystemic wasting syndrome (PMWS) in free-ranging wild boar (Sus scrofa ssp scrofa) in Italy

2010 ◽  
Vol 56 (5) ◽  
pp. 717-724 ◽  
Author(s):  
Federico Morandi ◽  
Ranieri Verin ◽  
Giuseppe Sarli ◽  
Nicola Canetti ◽  
Marianne Scacco ◽  
...  
2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Iratxe Díez-Delgado ◽  
Mariana Boadella ◽  
MariPaz Martín-Hernando ◽  
José Angel Barasona ◽  
Beatriz Beltrán-Beck ◽  
...  

Individuals in natural populations are exposed to a diversity of pathogens which results in coinfections. The aim of this study was to investigate the relation between natural infection with tuberculosis (TB) due to infection by bacteria of theMycobacterium tuberculosiscomplex and porcine circovirus type 2 (PCV2) in free-ranging Eurasian wild boar (Sus scrofa). Apparent prevalence for TB lesions and PCV2 infection was extremely high in all age classes, including piglets (51% for TB; 85.7% for PCV2). Modeling results revealed that the relative risk of young (less than 2 years old) wild boar to test positive to PCV2 PCR was negatively associated with TB lesion presence. Also, an interaction between TB, PCV2, and body condition was evidenced: in wild boar with TB lesions probability of being PCV2 PCR positive increased with body condition, whereas this relation was negative for wild boar without TB lesions. This study provides insight into the coinfections occurring in free-ranging host populations that are naturally exposed to several pathogens at an early age. Using TB and PCV2 as a case study, we showed that coinfection is a frequent event among natural populations that takes place early in life with complex effects on the infections and the hosts.


2004 ◽  
Vol 35 (2) ◽  
pp. 243-253 ◽  
Author(s):  
Joaquin Vicente ◽  
Joaquim Segal�s ◽  
Ursula H�fle ◽  
M�nica Balasch ◽  
Joan Plana-Dur�n ◽  
...  

2003 ◽  
Vol 55 (5) ◽  
pp. 522-527 ◽  
Author(s):  
J.R. Ciacci-Zanella ◽  
N. Morés

This report describes the first preliminary characterization of porcine circovirus type 2 (PCV2) isolates from pigs affected with post-weaning multisystemic wasting syndrome (PMWS) in Brazil. Diseased pigs were examined at necropsy and by histopathology. Macroscopic and microscopic analyses revealed lesions reported to be typical of PMWS, which included, respectively, emaciation, enlargement of lymph nodes, thymus atrophy and interstitial pneumonia, and granulomatous lymphadenitis with syncytial cells, among others. Using nested polymerase chain reaction (PCR) or imunoperoxidase it was possible to detected DNA or antigen of PCV2, respectively. The PCR' s amplified fragment could be differentiated from PCV1 and PCV2 from one another by restriction fragment length polymorphism (RFLP) analysis. PCV2 DNA was detected in 70% (14/20) of samples of pigs with clinical signs and lesions associated with PMWS. This study shows that PCV2 is associated with lesions and symptoms indicative of PMWS in pigs. It is also shown that the Brazilian PCV2 isolates may have variation in their genome.


2009 ◽  
Vol 135 (3-4) ◽  
pp. 272-282 ◽  
Author(s):  
Llorenç Grau-Roma ◽  
Charlotte K. Hjulsager ◽  
Marina Sibila ◽  
Charlotte S. Kristensen ◽  
Sergio López-Soria ◽  
...  

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