West Nile vaccine - The Horse Forum
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post #1 of 4 Old 12-24-2007, 06:24 PM Thread Starter
Join Date: Nov 2007
Location: Mississippi
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West Nile vaccine

Was wondering if anyone out there has ever had any problems with the vaccine. The reason I ask is I purchased a stud and the breeders told me that they had a vet friend who owned a ranch and was vaccinating his and he was losing about 3/4 of his colts and he started researching and was finding it was the west nile vaccine,Anyway he stopped giving it and hasn't lost anymore,One of my mares I purchased had been vaccinated and she just lost her colt today, she was due to foal in April,Also a friend of mine lost his colt last year and the mare had been vaccinated also,So I was just wondering if anyone else has ran across this..
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post #2 of 4 Old 12-24-2007, 10:41 PM
Green Broke
Join Date: Nov 2007
Location: Chickamauga, Georgia
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OMG im so sorry to hear this! :( :( I vaccinate my horse for it and he hasnt had any trouble with it. I ahve never heard this beofre that makes me really worried now!

3 barrels , 2 hearts & 1 passion
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post #3 of 4 Old 12-25-2007, 12:10 AM Thread Starter
Join Date: Nov 2007
Location: Mississippi
Posts: 8
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west nile

Yea I am gonna just take my chances from now on and just not vaccinate any of my mares or my stud for west nile until theres some research to show me that it's not what is causing the mares to lose their colts...
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post #4 of 4 Old 12-25-2007, 10:15 AM
Join Date: Jul 2007
Location: East Texas
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I wouldn't take second hand information. The Ft. Dodge WNV vaccine had huge crazy rumors going around the first year it was out on the market, but they weren't supported by any evidence (such as necrospy) and often there were many things going on in the horse's environment that were likely to cause abortion.

The Ft. Dodge WNV vaccine has been studied in pregnant mares and breeding stallions with no evidence of abortion or sterility.


The other WNV vaccine is not currently labelled or studied in pregnant mares.

Cindy D.
Licensed Veterinary Technician
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