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A good lesson in proactivity

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  • Pamela Alley
    We need to do this kind of thing every time RVHD is suspected... :) PA ... From: ProMED-mail To:
    Message 1 of 1 , Sep 14, 2011
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      We need to do this kind of thing every time RVHD is suspected... :)

      PA
      ----- Original Message -----
      From: "ProMED-mail" <promed@...>
      To: <promed-ahead-edr@...>
      Sent: Sunday, September 11, 2011 7:46 AM
      Subject: PRO/AH/EDR> Equine herpesvirus, equine - North America (12): (MI)


      > EQUINE HERPESVIRUS, EQUINE - NORTH AMERICA (12): (MICHIGAN)
      > ***********************************************************
      > A ProMED-mail post
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      > ProMED-mail is a program of the
      > International Society for Infectious Diseases
      > <http://www.isid.org>
      >
      > Date: 10 Sep 2011
      > Source: Mlive.com [edited]
      > <http://www.mlive.com/news/kalamazoo/index.ssf/2011/09/ehv-1_found_in_richland_horse.html>
      >
      >
      > Thanks to a conscientious horse owner here, health officials are
      > hopeful that a deadly equine disease has been stopped in its tracks
      > after its 1st victim.
      >
      > Tests confirmed Wednesday [7 Sep 2011] that the 23-year-old mare Justa
      > Sailin, put down 1 Sep 2011, had the much-feared equine herpesvirus-1
      > myeloencephalopathy, EHV-1, the virus that spread across 6 western
      > states and killed 13 horses in May and June 2011.
      >
      > That outbreak resulted in canceled shows, costly quarantines and
      > testing, and national worry among horse owners. It was linked back to
      > the spring week-long National Cutting Horse Association Western
      > National Championships in Ogden, Utah, where U.S. Department of
      > Agriculture figures show a total of 421 horses were potentially
      > exposed.
      >
      > In all, 1685 other horses were considered subsequently exposed when
      > horses from the show returned to their own states or mingled at other
      > shows. But when the horse in Richland got sick last week, even before
      > a diagnosis was confirmed, her owner, Betsy Rohr Hoyt, initiated
      > precautions just in case, and that, veterinarians said, makes all the
      > difference.
      >
      > Show horses, including Hoyt's, are routinely vaccinated against the
      > garden variety equine herpes virus that can make them very sick with
      > respiratory illness. But there is no vaccination to protect against
      > the occasional virus mutation that attacks the animal's central
      > nervous system and leads to almost certain death, said James Connell
      > of Town and Country Veterinary Hospital in Allegan, who treated the
      > horse.
      >
      > For now, the only protection is to isolate animals that have the
      > disease, keeping home all animals that might have had any contact with
      > a stricken horse and taking extraordinary measures to prevent any
      > germs from leaving the farm, he said.
      >
      > In his case, that meant a shower, a change of clothes, and the
      > purchase of new shoes when the requisite bleaching ruined the pair he
      > had worn on calls to the farm last week to treat the animal.
      >
      > In Hoyt's case, it meant forgoing an end-of-the-year show with a
      > seemingly healthy hunter-jumper from another farm, days before lab
      > tests came back showing that EHV-1 was responsible for her mare's
      > death. Hoyt went into voluntary quarantine mode, taking stringent
      > sanitation steps.
      >
      > "I just finished bleaching everything yesterday," Hoyt said Friday [9
      > Sep 2011]. "I had to pull everything out of the barns, and everything
      > was power washed, bleached or Lysoled, or thrown away."
      >
      > While she waited for lab results, she didn't travel to other farms to
      > work horses she had scheduled there.
      >
      > "That's huge," because this is a virus that can be transported not
      > only from horse to horse but by hitch-hiking on handlers from one
      > horse to another, said Steven Halstead, state veterinarian with MDARD
      > [Michigan Department of Agriculture & Rural Development].
      >
      > Halstead said MDARD workers were on Hoyt's Piper's Acre Farm today [10
      > Sep 2011], beginning to go over travel records and trace any prior
      > contacts between the horses there and other animals. Luckily, Hoyt did
      > not participate in the Richland Horse Trials show last month [August
      > 2011], and it is unlikely there is any connection between that show
      > and Justa Sailin's death, Halstead said. At this point, veterinarians
      > are not sure how the horse contracted the illness.
      >
      > The 8 animals still on the farm must remain fever-free for 21
      > consecutive days before the official Michigan Department of
      > Agriculture & Rural Development (MDARD) quarantine put on today [10
      > Sep 2011] is lifted. So far, they have shown no signs of illness, Hoyt
      > said.
      >
      > Halstead and Connell said they were not aware of any other cases,
      > either. They are hopeful this will be the end of it.
      >
      > "Betsy Hoyt manned up and did something she didn't have to do. It was
      > a selfless act" that benefited every other horse owner across the
      > region, Connell said. "It's the right thing to do," Hoyt said. "I
      > wouldn't be able to forgive myself if I got someone else's horses
      > sick."
      >
      > [Byline: Rosemary Parker]
      >
      > --
      > Communicated by:
      > ProMED-mail <promed@...>
      >
      > [A sad loss for the owner, but her precautions are admirable. It is
      > hoped that all horse owners will educate themselves on this virus and
      > learn to recognize the early signs of this disease.
      >
      > Equine herpesvirus (EHV-1) infection in horses can cause respiratory
      > and neurological disease, abortion in mares, and neonatal foal death.
      > The neurological form of the disease is known as equine herpes
      > myeloencephalopathy (EHM) and has the potential to cause high
      > morbidity and mortality.
      >
      > EHV-1 is easily spread and typically has an incubation period between
      > 2-10 days. Respiratory shedding of the virus generally occurs for 7-10
      > days but may persist longer in infected horses. For this reason, the
      > isolation period recommendation for confirmed positive EHM cases is 21
      > days. Clinical signs of EHM in horses may include nasal discharge,
      > incoordination, hindquarter weakness, recumbency, lethargy, urine
      > dribbling and diminished tail tone. The prognosis for EHM positive
      > horses depends on the severity of signs and the period of recumbency.
      > Employing supportive treatment with intravenous fluids,
      > anti-inflammatory drugs, anti-viral drugs and other supportive
      > measures may be beneficial, since there is no specific treatment for
      > EHM. Currently, no EHV-1 equine vaccine has a label claim for
      > protection against the neurological strain of the virus.
      >
      > Portions of this comment have been extracted from:
      > <http://www.cdfa.ca.gov/ahfss/animal_health/equine_herpes_virus.html>.
      > - Mod.TG]
      >
      > [see also:
      > Equine herpesvirus, equine - North America (11): (USA) 20110830.2663
      > Equine herpesvirus, equine - North America (10): (USA) 20110826.2598
      > Equine herpesvirus, equine - North America (09): (USA) 20110625.1944
      > Equine herpesvirus, equine - North America (08) 20110618.1859
      > Equine herpesvirus, equine - North America (07) 20110609.1750
      > Equine herpesvirus, equine - North America (06) 20110604.1705
      > Equine herpesvirus, equine - North America (05) 20110528.1639
      > Equine herpesvirus, equine - North America (04) 20110528.1632
      > Equine herpesvirus - North America (03): (USA) 20110526.1607
      > Equine herpesvirus - North America (02): (Canada, USA) 20110524.1573
      > Equine herpesvirus - North America: (USA, Canada) 20110519.1516
      > Equine herpesvirus, equine - USA (06): (NJ) 20110419.1220
      > Equine herpesvirus, equine - USA (05): (NY) quarantine lifted
      > 20110417.1201
      > Equine herpesvirus, equine - USA (04): (NY) Cornell U 20110407.1083
      > Equine herpesvirus, equine - USA (03): (NY) Cornell U 20110405.1057
      > Equine herpesvirus, equine - USA (02): (NY) Cornell U, RFI
      > 20110403.1038
      > Equine herpesvirus, equine - USA: (NY) Cornell University
      > 20110402.1021]
      > .................................................sb/tg/msp/dk
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