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UK Pig Disease Quarterly Surveillance Report (to June 2006)

by 5m Editor
16 October 2006, at 12:00am

By Veterinary Laboratories Agency - This report monitors trends in the major endemic pig diseases and utilises the farmfile and VIDA (Veterinary Investigation Disease Analysis) databases. The report is compiled using disease data gathered by the network of 15 VLA regional laboratories which carry out disease investigation in the field.

Quarterly Surveillance Report Pigs: Vol.10 No.2
April - June 2006
Published August 2006

Contents

OVERVIEW (here)

NOTIFIABLE DISEASES

ZOONOSES & FOOD SAFETY

OVERVIEW OF PIG INDUSTRY

SCANNING SURVEILLANCE FOR NEW & EMERGING DISEASES

HIGHLIGHTS OF ENDEMIC DISEASE

PUBLICATIONS

NOTIFIABLE VIRAL DISEASES:

No suspect incidents of swine fever or Aujeszky’s disease were reported that required statutory laboratory investigations.

ZOONOSES AND FOOD SAFETY:

FOOD SAFETY INCIDENTS:
No suspect incidents involving poisoning of pigs were reported.

SALMONELLOSIS
The second quarter of 2006 shows fewer recorded incidents of Salmonella Typhimurium than in the second quarter of recent years. There are no obvious shifts of phage type within the Salmonella Typhimurium incidents. Phage type U288 remains the most common. Salmonella Derby remains the second most commonly isolated serotype.

One case of Salmonella Typhimurium U288 reported this quarter resulted in scour and wasting of 30% of weaner pigs in an outdoor weaning setup. A further case of Salmonella Typhimurium U288 resulted in respiratory distress or sudden death affecting 20% of 650 post-weaned pigs with a 10% mortality. PMWS was also implicated in this case.

Two farm visits of note this quarter involving Salmonella Typhimurium were carried out by VLA Thirsk. One case involved all 30 of a group of gilts recently introduced to a newly sited outdoor breeding unit. The animals all showed respiratory distress and pyrexia up to 106o F. Salmonella Derby was isolated in widespread distribution and swine influenza type H1N2 was confirmed as a concurrent infection.

The second visit was a ZO4 advisory visit made to a 516 sow high health breeding unit. The unit had a farm shop attached and the local environmental health office was involved in the visit and recommendations. No human cases of salmonellosis could be traced to the farm shop and it was hoped that preventative measures had been instigated in time to prevent this. The demand for ZAP visits has increased since ZAP Support Visits under project FZ2015 were extended to include producers in level 2 and also because the thresholds for meat juice antibody prevalences for inclusion of units in ZAP categories 2 and 3 were reduced.

ZOONOSES ACTION PLAN (ZAP):
Summary:

  • A total of twenty-four further visits are reported – 18 from the current quarter and 9 from the first 3 months in 2006.
  • Recommendations have been made to the farmers and their vets.
  • 30% (N=4079) of faecal samples examined so far in a total of 77 visits have been culture positive for salmonella.
Results:
  • The visit details are shown in Table 1 and the prevalence by sampling location and type in Table 2.
  • Results of 24 visits are reported - salmonella was isolated during visits to all of them.
  • A total of 1370 samples were taken during these visits of which 28% were culture positive for salmonella.
  • A limited number of these samples were sent for further typing – these results will follow in a later report.

Highlights: Second Quarter 2006

  • No new and emerging diseases or recrudescences of old diseases.
  • Unusual manifestations of new syndromes were not seen.
  • The following endemic disease occurrences warrant note.
  • THE KEY THING TO NOTE IS THAT MANY WERE MULTIPLE INFECTIONS.

Further Information

To read the full 7 page pdf report Click Here

August 2006