strangles vaccines hoping Ryle will answer:)

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strangles vaccines hoping Ryle will answer:)

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    05-16-2009, 12:07 PM
strangles vaccines hoping Ryle will answer:)

I looked up Strangles on the and it seems that the vaccine does not protect particularly well. Is that correct? Does anyone know if there is any benefit to the intranasal versus the injectible?
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    05-16-2009, 02:28 PM
You are correct, the Strangles vaccine is not as effective at preventing disease as the core vaccines. In fact, it's biggest benefit is really decreasing the severity of disease. This and the fact that the strangles vaccines come with increased risk of adverse reaction compared to the core vaccines is why it's only recommended for horses in high-risk situations.

The intranasal vaccine does appear to decrease the severity of clinical disease.
    05-16-2009, 03:18 PM
Thanks. You are always so clear in your answers. What would you consider a high risk situation?
    05-16-2009, 05:14 PM
High risk situations include if your horse travels quite a bit and is around different unknown horses or there is an outbreak in your area. I believe, and Ryle can correct me if I am wrong, that a horse doesnt develop an "immunity" to Strangles for something like 6 weeks after the vaccination and are more at risk during this time.
    05-17-2009, 01:42 PM
High risk situations would be foals, horses that will be at breeding facilities, horses that travel and are exposed to large groups of new horses regularly and during times of stress (shows/competitions) etc. You should also consider that even horses in these situations may not need vaccination if they have had strangles in the last 5 years because 75% of horses develop a strong, long-lasting immunity after recovery from the disease.

Horses are not more at risk in the weeks following vaccination. Vaccination provides protection in 1-2 weeks in horses who are getting boosters but for foals or first time vaccinates you should consider that they are not fully protected until after the full initial series is given.
    05-17-2009, 01:47 PM
Actually, we had a strangles outbreak and the horses that had been vaccinated regularly (2x a year or more) for 2+ years were not affected or minimally affected (spiked a fever for 2 days, no other symptoms, and were fine) whereas any that had not been vaccinated or had been vaccinated but for less than 2 years, became symptomatic.

So based on that I'd say it's definitely worth it to vaccinate 2x a year - 4x a year depending on how much you travel and/or the horses at your barn travel.
    05-17-2009, 02:16 PM
Foals! That's right. Thanks.
    05-17-2009, 11:00 PM
Okay, thanks guys. It sounds like we should continue to vaccinate for strangles. I have heard so many opinions on the subject and just wasn't sure.

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