[RC] West Nile, No. Dakota - Ridecamp Guest
Jonni <jonnij@xxxxxxxx>
July 11, 2002
Emergency Management Warning 2
Horse in North Dakota Confirmed with West Nile Virus (WNV)
A horse in Grand Forks County, ND, has been confirmed as positive for WNV infection. This is the first-ever detection of WNV in North Dakota.
The horse was an approximately 2-year-old Quarter horse gelding that became ill on June 30, 2002, and had to be euthanatized on July 2. The horse had never been out of the Grand Forks County area and was not vaccinated against WNV.
WNV infection was confirmed at the National Veterinary Services Laboratories (NVSL) in Ames, IA, through positive results on a WNV IgM-capture enzyme-linked immunosorbent assay (ELISA) and a WNV plaque-reduction neutralization test (PRNT) of a serum sample, plus a positive WNV reverse transcriptase nested polymerase chain reaction (RT-nPCR) on brain tissue. Virus isolation attempts are underway.
No WNV has ever been detected in humans, birds, or mosquitoes in North Dakota, but the infection of a horse with no history of travel indicates that WNV is present in the local bird and mosquito populations.
If you have questions about WNV in horses, please contact the USDA, APHIS, Veterinary Services, Emergency Programs staff at 301-734-8073, 800-940-6524, or EMOC@xxxxxxxxx To report the finding of a dead bird for possible WNV testing, please consult your state or local public health department.
http://www.aphis.usda.gov/oa/wnv/index.html
More information and links available
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