International Disease Report Second Quarter 2006

The International Collating Center, Newmarket, England, and other sources reported the following disease outbreaks:

Contagious equine metritis (CEM) was confirmed among mares and stallions on several non-Thoroughbred breeding premises in Switzerland. Abortions attributable to equine herpesvirus-1 (EHV-1) were reported from France among non-Thoroughbred trotting mares, from Japan on three premises among Thoroughbred mares, and the United Kingdom on five premises. A fatal case of neonatal disease due to EHV-1 and two fatal cases due to EHV-4 were diagnosed in the United Kingdom.

Respiratory disease due to EHV was widely diagnosed among several breeds of horses throughout France. Three cases of coital exanthema (EHV-3) were diagnosed in the United Kingdom among non-Thoroughbreds.

The outbreaks of equine infectious anemia (EIA) reported from Italy and Ireland in June continue to be investigated and further cases have been diagnosed. The origin in both countries is considered to be the administration of an infected equine biological product.

Equine influenza was widely reported in France among several breeds and in a livery stable in the United Kingdom. A sporadic case of mare reproductive loss syndrome (MRLS) was diagnosed in Kentucky during late April and in New Jersey in June.

West Nile virus (WNV) infection was diagnosed for the first time in Argentina during February and March. Three deaths resulting from neurological disease were identified among horses on separate premises. In the United States, equine cases of WNV were reported by the end of June from Iowa, North Dakota, Wisconsin, and Wyoming, with human cases reported in California, Mississippi, and Texas.

Information was obtained from the Equine Disease Quarterly, funded by underwriters at Lloyd's, London, Brokers and their Kentucky agents through the Gluck Equine Research Center, College of Agriculture, University of Kentucky.

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Equine Disease Quarterly

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