The Facts on EHV-1

Although there are a number of herpes viruses that can affect horses, mules and donkeys, the types of equine herpesvirus 1 (EHV-1) and 4 (EHV-4) are two we are most concerned with. EHV-4 produced the majority of upper respiratory infections that we see in weanlings and yearlings and very rarely causes abortion in mares and neurological diseases. EHV-1, on the other hand, causes respiratory disease, abortions in mares, foals of neonatal death and / or neurological disease.

The neurological form of EHV-1 is myeloencephalopathy equine herpesvirus and is the form of the disease in the outbreak in May was seen in the western part of the country. According to the U.S. Department of Agriculture in their report EHV-1 situation final June 22, there were 90 confirmed cases of EHV / EHM in 10 states (Arizona, California, Colorado, Idaho, New Mexico, Nevada, the Oklahoma, Oregon, Utah and Washington).

Of the 90 confirmed EHV / EHM cases, 54 were cases that were in April Ogden, Utah, the event May 29 to 8 Thirteen horses associated with the outbreak died or were euthanized.Nine of these horses attended the show in Utah. The quick action by veterinarians and public officials to limit the show horse race, kept the development of some new cases quite low.

THT is a tricky virus. When young horses first contract, they suffer include fever, lethargy, a clear runny nose, watery eyes and sometimes a cough. Because the virus does not stimulate a strong immune response, they could go down with EHV-1 several times during their life, but every time they do, they have milder symptoms.

Up to 80 percent of the horses become latently infected (the virus becomes inactive in the lymph nodes) and serve as reservoirs for the disease. When the horse latent infection is emphasized by towing a horse show, intense training, etc., it could begin to excrete the virus without showing clinical signs, making containment of the virus is very difficult.

Most horses that the experience of the respiratory form of EHV-1, but in very rare cases the disease progresses in neurological diseases. These horses are usually pointed out, are very young or very old, and could have a weakened immune system.

The incubation period for EHV (time from exposure to becoming ill) is one to two days with clinical signs of fever, depression, nasal discharge and loss of appetite. If the neurological form of the disease occurs, it usually within eight to 12 days and the horse developed clinical signs of weakness, lethargy, urine dribbling, decreased tail tone and inability to bear.

NewMedicalBooks.net: Lorenz: Handbook of Veterinary Neurology 5th ...

Handbook of Veterinary Neurology provides quick access to vital information on neurologic conditions in a wide range of species, including canine, feline, bovine, caprine, equine, ovine, and porcine. A problem-oriented approach makes it easy to diagnose and treat neurologic problems in small and large animals. The coverage of disorders by problem, not by established disease diagnosis, emulates how animals present to the veterinary hospital and simplifies the formulation of a correct diagnosis. Within each chapter, discussions of neurologic disease include a review of the localization criteria and the diseases that can cause that problem, plus treatment and surgical techniques. Lead author Michael D. Lorenz brings decades of experience to neurologic assessment, using a diagnostic approach that requires minimal knowledge of neuroanatomy. A problem-based approach is organized by presenting sign rather than by condition, guiding you to logical conclusions regarding diagnosis and treatment. Algorithms diagram the logic necessary to localize lesions and to formulate diagnostic plans. Coverage of current diagnostic techniques includes the use of diagnostic tools, such as radiology, spinal fluid analysis, electrodiagnosis, and MR imaging. Case histories in each chapter present a problem and the results of the neurologic examination, then ask you to solve the problem by localizing the lesion, listing probable causes, and making a diagnostic plan. Answers are provided at the back of the book. A consistent format for each case history includes signalment, history, physical examination findings, and neurologic examination. A comprehensive appendix describes species and breeds that have a congenital predisposition for particular neurologic diseases. Extensive references make it easy to pursue in-depth research of more advanced topics. A companion website includes 20 narrated video clips with accompanying PowerPoint slides that correlate to the case histories in the book, covering neurologic assessment and clinical problems such as paresis of one limb, tetraparesis, stupor, seizures, ataxia of the head and limbs, and cranial nerve disorders. Two new co-authors, Jean Coates and Marc Kent, board-certified in neurology, enhance the credibility of this edition. A full-color design and numerous illustrations include enhanced images of neuroanatomy and pathology. 5. Paresis of One Limb 6. Pelvic Limb Paresis, Paralysis, or Ataxia 7.

Schalm's veterinary hematology

The Oklahoma veterinarian

Live animal trade & transport magazine

Practical Small Animal MRI

Veterinary forum