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Discussion on West Nile vaccinations twice year?
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Member:
Skye
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Posted on Tuesday, Feb 17, 2004 - 8:54 pm:
I understand West Nile is recommended by some vets in areas where mosquitoes are a threat year 'round, but is there an increasing number of vets recommending two shots a year even in cold climates? Does anyone know?
Does anyone have any thoughts?
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Member:
Tagloili
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Posted on Tuesday, Feb 17, 2004 - 10:11 pm:
My vet, in Colorado, WNV and then booster three weeks later. After that, only annually with spring shots.
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Moderator:
DrO
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Posted on Wednesday, Feb 18, 2004 - 8:02 am:
Hello Ellie,
The article on WNV talks about the most recent work on the efficacy and length of protection of the killed vaccine.
DrO
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Member:
Sunny66
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Posted on Monday, Sep 27, 2004 - 3:34 pm:
We're vacinating every six months in California just to be sure...however, some are not vacinating at all. The following link is very very scary and sad to me.
https://www.sacbee.com/content/news/story/10892891p-11810501c.html
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Member:
Canter
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Posted on Monday, Sep 27, 2004 - 5:12 pm:
Oh, Aileen...that article is heart-breaking! What a sad, sad waste of life with un-neccessary suffering for these poor horses. Seems to me that once a vaccine is proven safe & effective, there's few excuses for not giving it and owners who don't should be charged with neglect!
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Member:
Sunny66
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Posted on Monday, Sep 27, 2004 - 5:40 pm:
I know Fran, the picture of his hind feet....it'll give me nightmares for weeks, if not months.
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Moderator:
DrO
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Posted on Monday, Sep 27, 2004 - 10:10 pm:
Whether you vaccinate every 6 months or every 12 months, current research (sparse I admit) suggests you are 90% protected and that this vaccine is relatively safe. That would be relative to the risk of not vaccinating in a endemic area.
DrO
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Member:
Stvwhite
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Posted on Tuesday, Sep 28, 2004 - 9:29 am:
DrO,
Is there clinical evidence supporting the claim that once a year (every 12 months) vaccination is good enough to stop the West Nile infection? or is the recommendation to do it every 6mths?
I've also heard recommendations to vaccinate every 3 months during times when mosquitoes are present. (April - October).
Some believe that over vaccinating may cause other complications
Any insights.....
Thanks
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Member:
Sunny66
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Posted on Tuesday, Sep 28, 2004 - 10:52 am:
Just a couple of things my vet said last night:
He has yet to have a horse that has had the yearly vaccine -- but not the 6 month booster -- get WNV. 3
He said the latest recommendations are every 4 months now in the most at risk areas.
I was also told by another vet that it should not hurt to overvaccinate for this...the alternative is deadly and heartbreaking.
PS. I'm in California, I was told it will be different depending on where you are. I live in foothills and the recommendation there is every 6 months...right now...however, 45 minutes away from me the recommendation is every 4 months.
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Member:
Chance1
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Posted on Tuesday, Sep 28, 2004 - 11:28 am:
I'm hoping one vaccine with protect my guy since the one vaccine almost killed him. He had a VERY SERIOUS reaction...Swelling in the face and neck, difficulty breathing, sweating, serious hives and a very slow reaction to the adrenaline and cortisone. Obviously, there is no booster or follow-up in his future.
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Member:
Deggert
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Posted on Tuesday, Sep 28, 2004 - 11:54 am:
Hello all
Ruth, I went home last night after looking at the pictures on this thread, and my mare is in the same boat as you horse, except she never had WNV
due to timing circumstances. I am also in SO CA
where our vets are recommending 6months, I have done everyone but the mare because in October 03, we were going to start the WNV on her and her ultrasound showed she was pregnant, 3 months. (she was diagnosed not in foal earlier)With all the hoopla about the vaccine and pregnant mares we decided to wait because she reacts to all vaccines with some level of fever and severe stiffnes even with pre medication. Long story short, We hoped to vaccinate her right after foaling and she foundered, well, no vaccine there for sure. What I did do since last year is contact the county every month in regard to their spraying efforts. I found they had no idea that the "seasonal" water running behind our property was not seasonal anymore, it is a constant stream of water and then standing water and muck. They have been using the growth inhibitor down there and so far I rarely if ever see a mosquito. Even if vaccinated be sure to empty any standing water and call the local vector control agency, I was surprised how fast they got on the river in back. I did stress human contact more than horses. You have to say "you" are being bit. Also, for this mare she has a heavy duty fan and metered spray and fly spray on her twice a day. The pictures did freak me out though.
Have a good one.
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New Member:
Hezajet
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Posted on Tuesday, Sep 28, 2004 - 11:56 am:
Hi there Ruth...........I hv a 23 & 24 year old, both had bad reactions, the same as described by you, from the vaccine, when first given it, last year. I still went through with the booster with NO ill effects. This year they have both been given shots for WN twice as recomended by our Vet....and neither of our guys, have had any ill effects.
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Member:
Sunny66
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Posted on Tuesday, Sep 28, 2004 - 12:47 pm:
Oh Ruth
Debbie has great ideas...maybe add flysheets and leg protectors...and pray those (*&^% mosquitos stay away from your boy!
My vet did say that he thought in a couple of years, this may not be such a huge epidemic. Positive thoughts and prayers to you for at least the next two years!
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Member:
Chance1
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Posted on Tuesday, Sep 28, 2004 - 1:13 pm:
Hi All!
Thanks for the suggestions and relating your experiences. I'm doing all the preventive stuff...spraying, flysheet, etc, plus garlic for the past 2 1/2 years. I'm not going to try the booster even though Vikki had good luck. My guy has had even more violent reactions in the past to routine vaccines so he hasn't been vaccinated for the past 5 years...except for the WNV. In his case, my vet and I have decided that the risk of not recovering from the anaphylactic shock is greater than the risk of him "getting" anything, so we're keeping our fingers crossed and praying we're right. We're taking a chance (his name, by the way) and hoping his youth, otherwise good health and the preventive measures will keep him safe.
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Moderator:
DrO
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Posted on Wednesday, Sep 29, 2004 - 7:28 am:
Hello Steve,
We cover a number of efficacy studies in the article on West Nile Virus and currently they represent our best knowledge. The short answer at this time is yes we have a few studies to suggest that the efficacy of the vaccine at 6 months and at 12 months is around 90% as stated already above. Might you eek out a few more percentage points of protection with the extra shot is not known but there have been vaccine failures at less than 6 months following the booster.
DrO
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