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Short Communication
PMWS associated with diarrhoea and illthrift in a captive red river hog (Potamochoerus porcus)
  1. N. G. A. Woodger, BSc, BVetMed, MRCVS, FRCPath1 and
  2. O. M. Hosegood, BVSc, MRCVS2
  1. Veterinary Laboratories Agency – Bury St Edmunds, Rougham Hill, Bury St Edmunds, Suffolk IP33 2RX
  2. Scott Veterinary Clinic, 405 Goldington Road, Bedford MK41 0DS
  1. E-mail for correspondence n.woodger{at}vla.defra.gsi.gov.uk

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POSTWEANING multisystemic wasting syndrome (PMWS) emerged as a disease with a major economic impact on the pig industry in several pig-producing countries across the northern hemisphere in the 1990s. The disease has characteristic pathological features associated with porcine circovirus type 2 (PCV-2) replication and clinical signs that provide criteria for the recognition and diagnosis of the syndrome (Segales and others 2003a). Concurrent infections with other pathogens are suspected to contribute to disease presentation (Wellenberg and others 2004) and have formed the basis of experimental models of the syndrome. Examples of the coinfecting pathogens studied include porcine parvovirus (PPV), porcine respiratory and reproductive syndrome virus (PRRSV) and Mycoplasma hyopneumoniae (Allan and others 1999, Harms and others 2001, Opriessnig and others 2004). The condition was first recognised in the UK among commercial pigs in 1999, although there is evidence that PCV-2 circulation was widespread in the UK pig population before this (Grierson and others 2004). Over the past 10 years the spectrum of pathological lesions and syndromes associated with PCV-2 virus replication and the range of domesticated pig breeds affected has expanded (Chae 2005, Correa and others 2007). During this time there have been reports of PMWS in both farmed and feral European wild boar (Sus scrofa scrofa), a separate subspecies from domesticated pigs (Sus scrofa domestica) (Ellis and others 2003, Segales and others 2003b, Toplak and others 2004, Woodger 2005), and occasional cases of PMWS have also been confirmed in rare pig breeds such as the kunekune (N. Woodger, personal communication). The bush pigs, which include the African bush pig (Potamochoerus larvatus) and red river hog (Potamochoerus porcus), are members of a separate genus inhabiting sub-Saharan Africa. This short communication describes a case satisfying the established diagnostic criteria for PMWS in a juvenile red river …

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