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drmatthewtaylor

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1. EHV-1 Outbreak: New Cases Still Being Reported [edited]

by: Erica Larson, News Editor

TheHorse.com

June 6, 2011 Article # 18353





More than three weeks after the first cases of equine herpesvirus-1 (EHV-1) related to the current outbreak were diagnosed, new confirmed cases are still being reported to state and provincial animal health authorities. The outbreak, which is believed to stem from horses attending an Odgen, Utah, cutting horse championship competition in early May, has now seen dozens of horses test positive for the disease and more than 10 horses have been euthanized or died as a result.



New Confirmed Cases



At press time (4:00 p.m. EDT), the following states and provinces had provided new information about the EHV-1 cases present within their borders:



California--A statement issued late Friday (June 3) by the California Department of Food and Agriculture indicated that one additional horses tested positive for EHV-1 that day; the total number of confirmed cases in the state is now 21, according to a statement release today. Eight of the EHV-1 positive horses have displayed neurologic signs and 13 horses have only been febrile (feverish). Animal health officials noted that "the two new confirmed positive horses, located on the same premises, were exposed to a previously confirmed positive Ogden, Utah, participant."



The confirmed cases are located in the following counties: Glenn, Plumas, and Shasta in Northern California; Amador, Colusa, Marin, Napa, and Placer in North Central California; Stanislaus in Central California; Kern in South Central California; and Los Angeles and Ventura in Southern California.



Saskatchewan--According to a release from the Saskatchewan Ministry of Agriculture Animal Health Unit, the province's first confirmed cased of neurologic EHV-1 was diagnosed last week. Disease surveillance veterinarian Wendy Wilkins, DVM, PhD, indicated in the release that the affected horse "attended a cutting horse show in Lloydminster, Saskatchewan, Canada, (May 14-15). Some of the horses present at this show may have had a history of travel to the National Cutting Horse Association's Western National Championships in Ogden, Utah, conducted (April 29-May 8)."



No further information was available about this new case at press time.



British Columbia--A statement released Friday by Equine Canada indicated that a total of two cases of EHV-1 have been confirmed in British Columbia: "The update in British Columbia, from the Animal Health Centre laboratory (Ministry of Agriculture), indicated two positive (neurologic) EHV-1 cases confirmed through the laboratory. These cases had either direct or indirect contact with horses that were at the Ogden, Utah competition." It is not clear what clinical signs these horses displayed.





Full text:

http://www.thehorse.com/ViewArticle.aspx?ID=18353



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2. State says horse virus appears contained [WA]

By Jacques Von Lunen, Herald staff Writer

The News Tribune

June 6, 2011





It appears the recent outbreak of the Equine Herpes Virus type-1, or EHV-1, has been contained, Leonard Eldridge, the state veterinarian, said in a written statement Friday.



"The state veterinarian believes that sufficient time has elapsed for signs of EHV-1 to appear in horses exposed at the National Cutting Horse Association Western National Championships in Ogden, Utah, as well as their stable and pasture mates," the statement read.



Eldridge said any horse that "has not tested positive, exhibited symptoms or been exposed to a confirmed positive horse (should) be cleared for travel."





Full text:

http://www.thenewstribune.com/2011/06/04/1695163/state-says-horse-virus-appears.html





See Also:



State veterinarian recommends easing of horse movement restrictions [OR - edited]

Equine herpes virus episode winding down in Oregon

Chinook Observer

June 6, 2011





The vast majority of horse owners in Oregon and in the Pacific Northwest should feel free to participate in horse shows, rodeos, and other equine events as a recent outbreak of the neurological form of Equine Herpes Virus appears to be well contained, officials said Monday.



State Veterinarian Dr. Don Hansen of the Oregon Department of Agriculture says sufficient time has passed for most horses that may have been exposed to the virus traced to a horse show in Utah last month. The few horses that have shown symptoms of the disease will remain quarantined in their barns or stalls and monitored closely until it is clear the virus is no longer present.



"Any horse that hasn't tested positive, shown any symptoms, or not exposed to a confirmed positive horse should be okay for travel and participation in equine events," said Hansen. "We've been in close contact with owners of the affected horses and their stable mates. Those animals have been kept isolated and under close watch for the past few weeks. If these horses have gone 28 days without any signs of illness, including fever, they are most likely no longer contagious and can be considered for quarantine release."





Full text: http://tinyurl.com/42g5leg
 
Thanks for the info! I'd heard on Sunday that there was a new case in Moosomin Saskatchewan but wasn't given anything more than that for information so I didn't know if it was true or not. The article doesn't refer to Moosomin but confirms the new case in SK. If it were spread from the Ogden cutting horses via the show in Lloydminster then it seems someone didn't keep their horses in quarantine long enough.
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