Trinity Ridge Animal Health

5583 Highway 76 West
Laurens, SC 29360


Equine Vaccinations

Eastern and Western Encephalitis
These are “core vaccines.” No matter what your situation, solo horses or large groups, every horse needs this vaccine. At a minimum, twice yearly vaccines, particularly at least 3 weeks before the onset of summer rains and mosquitoes. To be safe many people vaccinate every 4 months with this vaccine – and in risky situations (young horses) and mosquito-prone areas, it’s probably a very good idea. There is no treatment effective for Eastern Equine Encephalitis – mortality is almost 100%.

Also a core vaccine, every horse needs this. Annual vaccination is recommended, but if it’s been over 6 months since a booster, and you notice a wound, a booster is a good idea.

Influenza and Rhinopneumonitis
These are respiratory vaccines. While not core vaccines, there are horses that should be protected. Horses at risk for the flu are show horses, young horses, shipped horses, and horses that tend to congregate in groups. Schedules vary with the risk of exposure – every 4 months for frequent travelers, to every 6-12 months for less risky situations.


Streptococcus equi subspecies equi (S. equi var. equi) is the bacterium which causes the highly contagious disease strangles.  Strangles commonly affects young horses (weanlings and yearlings), but horses of any age can be infected. Vaccination against strangles is recommended on premises where strangles is a persistent endemic problem or for horses that are expected to be at high risk of exposure.

Just like dogs and cats, we strongly recommend this annual vaccine.

This is the rhinopneumonitis vaccine used in pregnant mares. Pregnant mares infected with rhinopneumonitis virus in the last half of pregnancy can abort. This vaccine is used in her fifth, seventh, and ninth month of pregnancy.

West Nile Encephalitis
The data support the use of this vaccine. It should be used in all horses, even pregnant mares, and should be boostered every 4 months after an initial booster series 3 weeks apart.

So far, rotation of dewormers is not essential, however it is a good idea to spot check your program by having us run a fecal exam for intestinal parasites. The more horses per acre, the greater the risk of intestinal parasites.

Foal Vaccinations

  • 5 months: EEE, WEE, Tetanus, and WNV.
  • 6 months: EEE, WEE, Tetanus.
  • 8 months: Intranasal flu, EWT.
  • Deworm monthly between 2 and 6 months of age.
  • We’ve seen foals where roundworms seem to be resistant to Ivermectin – it’s a good idea in foals to rotate Ivermectin and Strongid T or Panacur.


  • A great idea for horses!
  • We’ll add the info on your Coggins test.
  • For less than $50 you can have lifetime ID protection for your horse.