Equine influenza breaks out at OSU vet hospital

2013-07-23T18:59:00Z 2013-07-24T01:07:10Z Equine influenza breaks out at OSU vet hospitalCorvallis Gazette-Times Corvallis Gazette Times
July 23, 2013 6:59 pm  • 

The Veterinary Teaching Hospital at Oregon State University will not accept horses for anything but emergency services until at least Tuesday, July 30, due to an outbreak of equine influenza virus at the hospital.

According to a press release from OSU, three horses are known to be infected with this virus, and others could be, officials say. The virus is a highly contagious respiratory disease in horses that typically is not fatal, but is a particular concern to foals and pregnant horses, because it can cause abortion.

Other than equines, the situation will not affect the care of any other small or large animals at the hospital.

The three horses infected at OSU have been placed in isolation and are being treated. Officials say they wish to emphasize that this is equine influenza virus, not equine herpes virus-1, a more serious disease that is often confused with the influenza virus.

Equine influenza is not transferable to humans or other animal species, but it can spread rapidly among horses and other equines. It is the most common contagious respiratory pathogen for horses and most animals recover fully. However, young, elderly or pregnant animals are more at-risk for viral diseases such as equine influenza.

“Equine influenza virus is endemic in the U.S., and we just happened to catch these cases,” said Keith Poulsen, an internal medicine specialist at the Lois Bates Acheson Veterinary Teaching Hospital in OSU’s College of Veterinary Medicine. “We’ve acted quickly so that hopefully no other animals will get infected.”

The Large Animal Internal Medicine and Surgery Services program at OSU is working with the state veterinarian’s office to inform veterinarians and horse owners about the disease.

The first clinical sign in horses is typically a fever, followed by cough, nasal discharge and lethargy. Horses with a fever of greater than 102.5 degrees should be seen by a veterinarian.

Infected horses can “shed” or transmit the virus for up to 10 days after incubation, although the peak of shedding is three to five days after infection. Horses that show signs of the disease should be isolated from other horses for 10 days after clinical signs first appear.

The virus is easily killed by many disinfectants, and thorough cleaning of stalls and equipment can help prevent the virus from spreading. Vaccination of horses during an outbreak in a training facility or barn can be beneficial, in consultation with a veterinarian.

Anyone who has concerns about the health of their animals should contact their veterinarian or the Lois Bates Acheson Veterinary Teaching Hospital at OSU, at 541-737-2858 or http://vetmed.oregonstate.edu/

The OSU equine facility typically treats 5-10 horses at a time. All horses currently hospitalized will be monitored closely and tested for equine influenza prior to discharge.

Theresa Novak is the city editor and opinion page editor at the Corvallis Gazette-Times. She can be reached at theresa.novak@lee.net or 541-758-9527.

Copyright 2015 Corvallis Gazette Times. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

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