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Vaccination
Management
Disease Information
A PMWS update (Jake Waddilove)
ABOUT PMWS & PDNS
National Pork Board PMWS Fact Sheet
About PDNS (Jake Waddilive)
CEI Emerging Disease Notices: PMWS / PDNS
Conference and meetings archive
Case Histories
Yorkshire Farm, UK - Mike Muirhead - Final Update, June 2002
Mike Muirhead's case history of a Yorkshire farm with PMWS and PDNS.
 
East Anglia Farm, UK - Philip Richardson
This paper charts the course and effects of the disease on a single herd as well as highlighting the economic impact.
Photographs
Clinical signs
Photos of the clinical signs that are seen generally in pigs with PMWS and PDNS. Includes skin lesions, enlarged lymph glands, wasting and dead pigs.
 
Post mortem (1)
Photos of the signs that are seen in post-mortem samples of pigs with PMWS and PDNS. Includes interstitial pneumonia, secondary bacterial infection, enlarged lymph nodes, oedema and intra cytoplasmic inclusions
 
Post mortem (2)
More Photos of the signs that are seen in post-mortem samples of pigs with PMWS and PDNS.


PMWS Research Archives

Published Friday, October 01, 2004: Veterinary Record, 2004, Volume 155, Nš16, 504
Genetic influence on the expression of PCV disease [letter].
LOPEZ-SORIA S, SEGALES J, NOFRARIAS M, CALSAMIGLIA M, RAMIREZ H, MINGUEZ A, SARRANO JM, MARIN O, CALLEN A
Three paternal genetic lines were used to inseminate sows in two farms (N1 and N2) of a multisite production system. All piglets born of these sows were monitored for mortality from 3 to 21 weeks of age. Post-mortem examination was carried out on each dead piglet, as well as histopathology and in situ hybridization for the detection of PCV2 DNA. Postweaning mortality was 5 and 7.9% in N1 and N2 respectively. About two thirds of mortality were confirmed due to PMWS. The results are summarized in the following table:

Mortality in farm N1 Mortality in farm N2
100% Pietrain 1.5% 2.1%
50% Large White x 50% Pietrain 4.7% 5.9%
25% Large White x 75% Duroc 9.8% 26.3%

Significant differences in mortality were observed between the three genetic backgrounds indicating that genetics have a direct effect on postweaning mortality, in this case mostly due to PCV2 infection. However, no direct correlation between PMWS and each breed was established.


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