Drought Pauses Florida EEE Cases

It’s nearly June, and Florida’s number of reported Eastern equine encephalitis (EEE) cases is holding steady at six. Four cases have been confirmed as fatal, with two so far surviving.


The typical fatality rate for horses infected with

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Fortified Plasma Benefits Sick Foals

Critically ill foals are seven percent more likely to survive if they receive plasma with higher concentrations of antibodies as opposed to traditional plasma, according to results of a recent study at the University of Wisconsin-Madison School

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Defining Colic (Book Excerpt)

The term colic actually means, in the broadest sense, abdominal pain. Abdominal pain is relatively common, even in people. We tend to refer to our abdominal pain as “stomach aches.”

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The Buzz On Mosquitoes

Mosquito control experts and human health authorities are concerned that Americans are becoming complacent about protecting themselves and their horses against West Nile virus (WNV). They discussed this trend and new mosquito control techniques

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Keeneland Horse Doesn’t Have Strangles

A Thoroughbred racehorse at Keeneland began showing slight signs of filling in the submandibular region (under the jaw) late last week, and on Saturday (April 29) the horse was moved to a private clinic for diagnosis. The fear was that the horse

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Risk Factors Associated with Renal Failure

In a recent study, University of Georgia College of Veterinary Medicine researchers looked for patterns in horses referred to the hospital with renal (kidney) insufficiency in order to detect the disorder earlier. Renal insufficiency is often a

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Nightshade and Ivermectin: A Deadly Mixture

Editor’s note: When researching the unknown illness story on this page, the following study on ivermectin’s interaction with a noxious weed was discovered. Nightshade and other poisonous plants should be eliminated from pastures.

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Four Horses Dead, One Ill; Dewormer Questioned

Four horses on a South Texas farm died from unknown causes in February; one horse is recovering. The horses’ owner suspects the problems might have been caused by a dewormer; she has necropsy and other test results, but she has not released them

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Medicating for Equine Colic

When a horse shows signs of colic, his owner should call a veterinarian immediately to ensure that he receives the best treatment for the particular situation. Blikslager said evaluating the severity and duration of a horse’s colic pain

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Impaction Colic: Blocking the Way

Impaction colic is caused by a blockage that forms due to feed material obstruction in the large colon. Large colon impactions make up as much as 8-10% of all colic, but the cause in a large majority of the cases is not known.

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Mouth Ulceration

My 7-year-old Tennessee Walking Horse has developed ulcers on the bars of his mouth. Any ideas why this would happen?

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WNV: A Threat to Unvaccinated Horses

As spring approaches and temperatures rise, growing mosquito populations will increase the risk for deadly mosquito-borne diseases, including West Nile virus (WNV) and equine encephalomyelitis (sleeping sickness).

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A New Model for Predicting Outbreaks of West Nile Virus

Infectious diseases were wreaking widespread havoc long before scientists had any idea what caused them. But knowing the pathogenic agents behind today’s scourges is just the first step in protecting against deadly outbreaks. Roughly 75% of

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Exercise Exhaustion (Book Excerpt)

Many exercise-induced problems could be avoided by applying common sense limits to performance stresses. If you plan to compete at eventing and endurance riding, make sure both you and your horse are appropriately prepared.

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