The strangles vaccination, like most vaccinations, is not 100% effective in preventing a horse from developing strangles if exposed. Generally, we expect vaccinated horses that acquire the disease to be less affected (show milder symptoms) than had they not been vaccinated. So, yes, it is possible that a vaccinated horse can acquire the bacteria and transmit it to other horses. You are correct that a high temperature may be indicative of strangles, but it is often also observed in other ailments including influenza. Given the cough and temperature, we recommend having your horse examined by your equine veterinarian for an appropriate diagnosis and treatment plan.
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Does a horse (12-year-old gelding) vaccinated with strangles intranasal (every six months for four years) that is exposed to a horse with strangles acquire the Strepococcus equi bacteria and shed it? The horse's symptoms are a maximum temperature of 103.8 and a cough for a couple of days.
Last Updated: June 21, 2010
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