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International Breeders' Meeting

INTERNATIONAL COLLATING CENTRE


    Animal Health Trust
    Information Exchange on Infectious Equine Disease

    Lanwades Park, Kentford, Newmarket, Suffolk CB8 7UU, England
    Telephone: + 44 (0) 8700 502424 extension 1266
    Fax: + 44 (0) 1638 555601
    Website: http://www.aht.org.uk
    /icc/linksicc.html


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    PLEASE NOTE DUE TO A CHANGE IN PERSONNEL, IN FUTURE PLEASE CONTACT
    RICHARD NEWTON OR MADELEINE McNAUGHT ON THE ABOVE NUMBER, OR
    E-MAIL madeleine.mcnaught@aht.org.uk TO SUBMIT REPORTING INFORMATION

REPORT FOR THE SECOND QUARTER OF 2001

AUSTRALIA

Victoria (Victoria Veterinary Laboratory)

EQUINE HERPESVIRUS
One case reported. Abortion confirmed due to EHV-1

Queensland (Queensland Government Laboratories)

SALMONELLA
22 year old mare died with Salmonella typhimurium. 4 others in group not affected.

STRANGLES
4 sporadic cases of strangles with individual animals only being affected, 2 were weanlings and 2 were four year olds.

ABORTION
2 mares were reported with abortion, no viruses isolated.

EQUINE INFECTIOUS ANAEMIA
1 isolation was made in northern endemic area.

CANADA

Canada have advised that they have nothing to report for this quarter.

DENMARK

EQUINE HERPES VIRUS - 1
An outbreak has occurred at one training stable with 21 show jumping horses. Serologically confirmed with 1 horse euthanased due to paralysis, 5 horses with ataxia and approximately 7 horses with respiratory symptoms.

The stable was isolated and there are no signs of further outbreaks. Ataxic horses are recovering. Some veterinarians are vaccinating horses close to the stable but this has not been gernally adopted.

FRANCE

INFLUENZA
Outbreaks affecting Thoroughbreds have occurred in Eure-et-Loir and Sarthe, diagnosed by serology.

Non-Thoroughbred trotting horses have been affected in Eure, Lot and Puy-de-Dôme. Non-Thoroughbred saddle horses have been affected in Ain, Calvados, Eure-et-Loir, Manche and Yvelines and other horses have also been affected in Eure-et-Loir, Seine and Yvelines.

EQUINE HERPES VIRUS
The respiratory form has occurred in Thoroughbreds in Calvados, diagnosis by virus isolation and PCR of EHV-1 on swabs.

The respiratory form also occurred in Thoroughbreds in Bouches-du-Rhône (in 2 different stables), Calvados, Eure-et-Loir, Maine-et-Loire, Oise (2) and Sarthe, diagnosis by serology.

The respiratory form has also occurred in non-Thoroughbreds. Trotting horses have been affected in Maine-et-Loire and Sarthe. Saddle horses have been affected in Ain, Calvados, Eure-et-Loir, Loire-Atlantique, Manche (in 2 different stables), Oise, Orne, Saône-et-Loire, Seine-et-Marne (2), Yvelines (6) and Essonne. Outbreaks have also taken place in other horses in Eure-et-Loire, Moselle, Seine, Yvelines, Essonne.

PIROPLASMOSIS
Endemic in south of France.

GERMANY

EQUINE HERPES VIRUS
Outbreak commenced on 3rd January 2001 and the last case was reported on 21st March 2001. Diagnosis was confirmed at the Titto Hannover laboratory. The outbreak was limited and affected Thoroughbred breeding stock with 6 horses affected on 4 premises. Horses had been vaccinated with Resequin Plus and Duvaxyn.

HONG KONG

Hong Kong have advised that they have nothing to report for this quarter.

REPUBLIC OF IRELAND

EQUINE HERPES VIRUS - 1
Diagnosis was made by the Irish Equine Centre by virus isolation. The outbreak was limited and affected breeding stock with 4 single cases on 4 premises, 1 multiple abortion on 1 premise and one fatal neurological case.

STRANGLES
13 cases reported.

SALMONELLOSIS
1 case reported.

ITALY

EQUINE HERPES VIRUS
Sporadic abortion cases have been reported.

PIROPLASMOSIS
Endemic in central-southern Italy with cases also reported in northern Italy, usually in horses coming from southern regions.

STRANGLES
Sporadic cases reported.

JAPAN

EQUINE HERPES VIRUS - 1 (Abortion form)
Outbreak commenced on 18th April 2001 and the last case was reported on 23rd April 2001. Two non-vaccinated horses on 2 premises affected.

EQUINE HERPESVIRUS - 4 (Respiratory form)
Outbreak commenced on 17th April 2001. The Japan Racing Association's Epizootic Research Station, confirmed diagnosis by virus isolation and PCR. 10 non-vaccinated foals on one premise have been affected.

TETANUS
On 20th April, 1 half-bred foal had clinical signs of tetanus and died.

On 23rd April, 1 non-Thoroughbred foal had clinical signs of tetanus and died.

NEW ZEALAND

New Zealand have advised that they have nothing to report for this quarter.

NORWAY

Unfortunately, no return made for this quarter.

SINGAPORE

Unfortunately no return made for this quarter.

SPAIN

EQUINE PIROPLASMOSIS
Sporadic cases reported.

EQUINE INFLUENZA
Sporadic cases reported.

HORSE MANGE
Sporadic cases reported.

SWEDEN

EQUINE HERPES VIRUS
Abortion form diagnosed in nine different stables

INFLUENZA
Diagnosed in two isolated cases. The first case was diagnosed on 17th December 2000 and the outbreak is now believed to be over.

EQUINE VIRAL ARTERITIS
Diagnosed by PCR. Virus detected in semen in six stallions. No clinical symptoms.

STRANGLES
Diagnosed by agent isolation in nine horses. Outbreaks continue in an endemic but mild form.

SWITZERLAND

EQUINE HERPES VIRUS-1
Two clinical cases including one with nervous signs and four notifications of serological diagnoses.

EQUINE VIRAL ARTERITIS
One clinical case reported.

STRANGLES
Five notifications in the midlands.

CLOSTRIDIUM PERFRINGENS
Two foals died on two premises with necrotic enteritis (Beta-2 toxin positive) and sepsis respectively, the latter associated with E.coli.

PIROPLASMOSIS
Two clinical cases of B.caballi (Berne) and eight serological findings (4 B.equi, 1 B.caballi, 1 B.caballi and equi and 2 unknown)

EHRLICHIOSIS
Two clinical cases in the western and north-western part of the country.

TURKEY

Please see Enclosure 1 for a Summary of the National Glanders Eradication Project.

UNITED ARAB EMIRATES

RHODOCOCCUS EQUI
A single case occurred on 17th June 2001 with diagnosis by the Central Veterinary Research Laboratory, Dubai by agent isolation. One Thoroughbred foal was affected on one premise with submandabular abscess. No history of illness in the affected animal. Other foals on the premises are being monitored.

PIROPLASMOSIS
Endemic.

UNITED KINGDOM

STRANGLES
Strangles remains endemic in the non-Thoroughbred population and continues to be diagnosed sporadically throughout the UK. One isolated case has been confirmed by the AHT in a Thoroughbred during the period. The animal was isolated and infection contained.

EQUINE HERPES VIRUS ABORTION
Outbreak commenced on 27th March 2001 and the last reported case was on 11th April 2001 with EHV-1 diagnosis by the AHT by pathognomonic histopathological lesions in foetal tissues. The outbreak was limited to Thoroughbred breeding stock with 2 horses on one premise affected. Horses were vaccinated against EHV and the 2nd mare had been in direct contact with 1st at time of abortion. Approx 40 animals on premises. Extensive serological testing undertaken. Most mares found to have high EHV titres had already successfully foaled. Managed in accordance with HBLB Code of Practice.

Single case detected on 5th April 2001 with EHV-4. Diagnosed by the AHT by pathognomomic histopathological lesions on foetal tissue. One non-Thoroughbred horse was affected. Vaccination history was unknown.

Single case detected on 9th April 2001 with diagnosis confirmed by the AHT by pathognomonic lesions in foetal tissue. One Thoroughbred horse was affected. Vaccination history was unknown.

Single case detected on 10th April 2001 with EHV-1. Diagnosed by the AHT by PCR and histopathology. One non-vaccinated Thoroughbred horse was affected.

Single case detected 10th April 2001 with EHV-1. Diagnosed by the AHT by pathognomonic foetal histopathology. One Thoroughbred horse was affected. Vaccination history was unknown.

Single case detected on 11th April 2001 with EHV-1. Diagnosed by the AHT by PCR. One vaccinated Thoroughbred horse was affected.

Single case detected on 12th April 2001 with EHV-1. Diagnosed by the AHT by PCR. One vaccinated Thoroughbred horse was affected.

EQUINE HERPES ABORTION/NEONATAL DEATH
Outbreak occurred on 17th May 2001 and last reported case was on 25th May 2001 with EHV-1 diagnosed by the AHT by PCR. Three Thoroughbred horses were affected on one premise. Vaccination history was unknown. The first mare aborted on 17th May and neonatal deaths occurred on 23rd and 25th May 2001.

A Single case outbreak occurred on 21st May 2001 with diagnosis by the AHT by immunohistochemistry. Thoroughbred breeding stock were affected. Vaccination history was unknown. One month old foal with 2-3 day history of mild diarrhoea, dullness, inappetance, haematuria, ventral oedema and supraorbital oedema. PCR was negative, but positive immunostaining of areas of renal tissue.

HERPES VIRUS PARALYSIS (Suspected)
Single case occurred on 6th April 2001 with diagnosis by AHT by typical serology. The outbreak was limited but clinically severe. One non-Thoroughbred horse was affected. Hind limb ataxia and bladder paralysis. High EHV circulating CF titres higly suggestive that EHV involved.

EQUINE HERPES VIRUS -3 - COITAL EXANTHEMA
Outbreak occurred on 8th May 2001 and date of last reported case was 10th May 2001 with EHV-3, diagnosed by the AHT by serology. The outbreak was limited and only affected non-Thoroughbreds and breeding stock. Two horses were involved on one premise. Stallion showed no clinical signs. Clinical signs appeared in mare after covering.

A Single case occurred on 25th May 2001 with EHV-3, diagnosed by the AHT by serology and agent isolation. The outbreak involved Thoroughbred breeding stock.

EQUINE VIRAL ARTERITIS
Single case occurred on 22nd May 2001 with diagnosis by AHT by serology and using RT PCR detections of EVA RNA in semen. One non-Thoroughbred stallion was affected which had not been vaccinated against EVA. No clinical cases. Mares on stud previously covered by this stallion found to be seropositive on pre-breeding serological testing. Yearlings that had been foals-at-foot during previous covering season were also seropositive. Semen positive on PCR testing and virus isolation from semen in progress.

UNITED STATES OF AMERICA

Please see Enclosure 2 for Disease Report from USA.

REGARDS

INTERNATIONAL COLLATING CENTRE