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Conference noted::equitation

Title:Equine Notes Conference
Notice:Topics List=4, Horses 4Sale/Wanted=150, Equip 4Sale/Wanted=151
Moderator:MTADMS::COBURNIO
Created:Tue Feb 11 1986
Last Modified:Thu Jun 05 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:2080
Total number of notes:22383

711.0. "Possible Outbreak of Potomac Fever" by SCOMAN::ROCK () Sat Sep 10 1988 12:03

    JUST TO LET SOME OF YOU KNOW...
    
    MY VET CALLED ME LAST NIGHT CONSERNED ABOUT AN OUTBREAK OF (NOT
    SURE OF THE SPELLING) PLATOMIC DESEASE OR IS IT A VIRUS...
    
    THIS IS A DESEASE THAT STARTED IN MARYLAND...AND UNTIL THE LAST
    FEW WEEKS THERE HAS NOT BEEN AN OUTBREAK HERE IN THE EASTERN
    MASS. AREA.
    
    A WEEK AGO OR SO SHE WAS INFORMED ABOUT A CASE OF IT IN HOPKINGTON,
    MASS. 
    
    THE PROBLEM IS THE THEY DO NOT KNOW EXACTLY HOW THE DESEASE IS
    TRANSFERED. IT COULD STRIKE A BARN OF HORSES AND ONLY AFFECT
    ONE HORSE OUT OF THE BARN OR THE ENTIRE BARN. YOUR HORSE COULD
    GET IT AND TEN HORSES NEXT DOOR MAY NOT BUT YET A MILE OR SO DOWN
    THE ROAD IT COULD STRIKE.
    
    SYMTONS ARE...    HIGH FEVER
                      DIARREA
                      COLIC
    
    AND IF THEY SERVIVE THAT THEY USUALLY  FOUNDER AFTER.
    
    IT IS NOT A PLEASENT ILLNESS.
    
    THERE IS A VACCINE FOR IT AND LIKE ALL SHOTS, THERE ARE TWO SHOTS
    GIVEN AT FIRST, THREE WEEKS APPART. THEN A YEARLY BOOSTER.
    
    THE VACCINE IS EXPENSIVE... ABOUT $25.00 PER SHOT.
    
    I WOULD SUGGEST THAT IF YOU ARE CONCERNED TO CONTACT YOUR LOCAL
    VET ABOUT IT.
    
    I HAVE SIX HORSES...THERE GOES A LOT OF MY $$$$$$.
    
    (I LIVE TWO TOWNS OVER FROM THIS HORSE AND I SHOW TOO.)
    
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711.1PBA::KEIRANMon Sep 12 1988 08:186
    The disease you are referring to is Potomoc Horse Fever.
    We had our whole barn vaccinated against it this year,
    and like you said, its 2 shots the first year, and once
    a year after that.
    
    
711.2WOULD LIKE TO HEAR MORE!MED::D_SMITHMon Sep 12 1988 08:425
    Is the disease tranferable between horses coming in contact with
    each other or from biting insects? If your horses is diagnosed early
    enough (by the symptoms described), could the affects of the fever be
    minumized, such as founder, etc.? 
    
711.3More questions...EMASA2::NICKERSONMon Sep 12 1988 15:1412
    I understand that there has been a couple of cases either last year
    or the year before in this area.
    The biggest concern is that they don't know how it is transmitted.
     Horses who have never left the property have gotten it as well
    as those who do travel.  One horse will get it while his neighbor
    doesn't.
    I even got the impression that the shot wasn't all encompassing.
    I have a call into my vet now to find out what other details he
    has
    heard.
    
    
711.4DELNI::L_MCCORMACKMon Sep 12 1988 16:377
    
    
    None of my horses showed this year or will be.  There are no
    other horses around me for about a mile.  Unless it is transmitted
    by insect, what is my risk factor?
    
    
711.5DON'T PANIC YET-STILL NOT CONFIRMEDMED::D_SMITHTue Sep 13 1988 09:1136
    
    
     Because my horse has had diarrhea for the last week or so (one
     of three symptoms), and this note was entered, I thought it would 
     be best to call my vet (Southboro).
    
     What I found out is there is a panic over this case in Hopkington,
     which has NOT YET to this day, BEEN CONFIRMED as Potomic Horse
     Fever (Acute Equine Diarrhea Syndrome), although the word is being
     passed out as such. My vet along with a few others are peforming
     all the tests possible to confirm pos. or neg. If pos., she is
     going to inform all of her clients. I would just suggest staying
     in touch with your vet for updates.
    
     There are many reasons for diarrhea other than PHF. Could be moldy hay.
     With the growing season the way it was, and the lack of pasture 
     grass-horses may be eating what the normally wouldn't eat
     (weeds,leaves,wood,bark). Could be just a common cold with the
     drastic weather change we had the last few weeks.
                        
     ___________________________________________________________________________
     For thoughs interested in more on PHF, there is a fairly good article
     in the May, 1988's Horse Illustrated, although there is still alot
     unknown!  I have the article for thoughs who can't obtain a copy.
     If needed, I will reply to this note with info from this.
     -------------------------------------------------------------------------- 
    
     In my case, as recommended by my vet, check all his vital signs
     (temp., pulse, resp., cap. refill, skin pinch-dehydration), move him
     to a diff. paddock and administer two pints of Pepto Bismal
     a day for the first two days, then cut back to eight ounces for
     the next three or so days or untill he is ok. If after a week there
     is no change, she will come see him.
                                        
     His temp. was normal at 100.8 degr. and all the rest of his norms.
     are ok...so I'm not going to panic yet.                                   
711.6RISK FACTOREMASA2::NICKERSONTue Sep 13 1988 14:0211
    RE.4
    Not sure what the risk factor is but there was a case where the
    horse never left the farm and was not in contact with any other
    horses.  That was last year.
    
    Does anyone know what the vaccine is?  live? dead? Have there been
    any reactions to the vaccine itself?
    
    There are so many questions with so few answers that it is difficult
    to make the "right" decision.
    
711.7PBA::KEIRANTue Sep 13 1988 14:147
    When my two had the vaccine this spring, it was given the same
    time as their other shots.  Its hard to say if they reacted to
    it or not, cause one horse was kind of sluggish the next day,
    but the other was acting normal.  They were also given flu
    shots, so its hard to say what they were reacting to.
    
    
711.8SCOMAN::ROCKTue Sep 13 1988 16:4636
    I TOO USE THE VET IN SOUTHBORO, DR. LINDSAY ROBBINS. SHE IS THE
    ONE THAT TOLD ME ABOUT THE POTOMIC FEVER GOING AROUND. 
    
    SHE IS CONCERNED ABOUT IT. AND I CAN TELL YOU THIS, THERE WAS ANOTHER
    OUTBREAK OF IT IN HARVARD THIS PAST MAY. WHEN I TALKED TO LINDSAY
    THIS A.M. SHE WAS NOT AWHERE OF THE HARVARD CASE THIS SPRING. BUT
    I DO THAT SHE IS PLANNING TO VACCINATE HER HORSES. AND THAT IS
    GOOD ENOUGH FOR ME TO FEEL THAT I WILL GET MY HORSES DONE TOO.
    
    THEY DO NOT KNOW AS YET HOW EXACTLY IT IS SPREAD FROM WHAT I GATHER.
    LIKE BOB WAS SAYING, OUT OF A BARN OF 10 HORSES 1 MAY GET EFFECTED.
    AND THERE MAY NOT BE ANOTHER OUTBREAK FOR 10 OR 20 MILES AWAY.
    
    THE OTHER FACT THAT I THOUGHT WAS INTERESTING IS THAT SHE SAID THAT
    THEY HAVE TESTED SOME OF THE BARN CATS IN THE STABLES AND FOUND
    THEY ARE SOMETIMES CARRIERS OF THIS BUT DO NOT SEEM TO SPREAD IT
    TO THE HOSRES. I GUESS IF I CAN REMEMBER WHAT SHE SAID WAS THAT
    THEY FOUND AN INFECTED CAT AT A BARN WHERE THERE WAS A CASE OF THIS
    POTOMIC FEVER IN A HORSE OR HORSES. THEY PUT THE CAT INTO A BARN
    ELSEWHERE WITH HORSES THAT HAD NOT BEEN VACCINATED AND IT NEVER
    BROKE OUT IN ANY OF THE HORSES. SO SHE SAID THAT IT IS STRANGE BUT
    THE CAT CAN BE A CARRIER BUT IT WILL NOT INFECT THE HORSES THREW
    THE CAT.
    
    I FOUND THIS INTERESTING...OF COURSE I PANICED...I OWN 5 CATS AND
    THOUGHT OH GOD....SHOTS FOR THEM TO OR DEATH!!!
    
    WELL WITH ONLY TWO CASES IN EASTERN MASS. IT IS NOT A MASSIVE OUT
    BREAK. EACH OWNER MUST TALK TO THIER VET AND MAKE THIER OWN DISISION
    ON GIVING THEIR HORSES THE SHOTS OR NOT.
    
    PS....I WAS ALSO TOLD BY MY FRIEND GAIL McALPINE THERE WAS A HORSE
    IN LITTLETON 2 YEARS AGO THAT GOT IT AND DIED FROM IT. THE HORSE
    NEVER WENT ANYWHERE, JUST HUNG AROUND IN THE PASTURE SHE SAID.
    
    
711.9No Price To HighPLANET::SILVAI finally got a PONY of my OWNYWed Sep 14 1988 08:5010
    I had both of my horses given the vaccine this spring
    along with their usual shots and neither had any reaction 
    what so ever.  One is 10 years old and "healthy as a proverbial
    horse" and the other is a 16 year old in only fair health.
    
    Sure, it cost me $25 per horse plus house calls (one week apart)
    but that is CHEAP compared to the heartbreak I would suffer if I
    lost even one of them!                                   
    
    
711.10GOOD PROTECTION - BUT NOT PERFECTHARDY::REMILLARDWed Sep 14 1988 13:2723
    
    	I give my own shots and included this with all the others that
    	I give.  From what I understand the vaccine is 85% effective.
    	Neither one of my horses had a reaction and one usually reacts
    	to anything - he is 32 years old.  Both are fine and the other
    	horses I did were fine too.
    
    	The reason I decided to go with this is that I was traveling
    	into New York state in August and that is a heavily affected state.
    	
    	I did start to worry when I started home from NY (9:30 pm) and found
    	that my horse was soaked with sweat each time I stopped during 
    	the first 3 and half/ 4 hours (12 hour drive home for me).  
    	But he was eating/drinking fine and otherwise healthy.  He has never 
    	traveled so late at night before and he had worked hard that 
    	day - I think it was nerves.  He was dry after about 3 and 
    	half hours out so I stopped worrying about trying to find 
    	a vet on the way home.
    
    	Oh, the vaccine can be bought for about $10 something a pop..
    	And I know the Vet even gets MORE of a price break.
                                  
    	Susan
711.11Better safe than sorryCOSBY::FOXAnd onward we go...Wed Sep 14 1988 13:379
    I had my horse vaccinated for PHF in May. I decided to get the shots
    after asking my vet about the pros and cons of the shots. Basically
    the answer was that if your horse contracts the disease and does
    not have the shot, it'll most likely die a painful death; with the
    shot the horse will be sick, but not nearly as bad and will survive.
    
    Needless to say, I opted for the vaccinations.
    
    Linda
711.12WintertimeBOEHM::SCHLENERThu Sep 15 1988 13:406
    Out of curiousity, are there signs that this disease becomes dormant in
    the winter? (A shot in the dark!)
     (Do they have any idea of the causes ....?) 
    
    				Cindy
    
711.14Vaccine or not to vaccineLEZAH::EZELLTue Sep 20 1988 16:4239
    The horse that I sold 1 year ago died a week ago in Upton. During
    the course of the fever the owners chose not to have blood drawn
    and after the horse died they would not allow an autopsy. When I
    learned my old friend had died I called the vet involved with the
    case and he said the animal displayed the symptoms of Potomic Fever.
    He proceeded to describe the death of a horse in Hopkinton a week
    before (discussed in previous notes) that was also thought to be
    Potomic Fever.
    
    I was concerned for the horse I presently own (Reg. Quarter Horse)
    and asked about the vaccine. He explained that the vaccine was only
    50% effective so I've decided not to vaccinate.
    
    One thing I do think is appropriate for all of us, and my vet agrees,
    is having a blood profile with muscle enzyme done. This will do
    two things; if your horse contracts ANY disease the blood will show
    a change in one or more different areas (white cell count, platelet
    count, red cell count, etc.). By having baseline blood work done
    you'll know from a second blood test at the time of symptom onset
    what the possible causitive agent is. The second thing the baseline
    work might do; if your horse does get Potomic Fever we might get
    a better profile of the disease through the examination of the blood
    during the course of the illness.
    
    Every year a new baseline should be drawn, preferably the same time,
    because a winter blood sample will be different from one done in
    the summer. The cost of this procedure is around $45.00.
    
    I've also heard of a two horses in teh Middlesex County area with
    Lyme disease and one horse with an Auto-Immune-Difficiency Disease.
    The horse with the later disease was not expected to live but he's
    slowly making a comeback at the vet's. I don't know how similar
    this disease is to the dreaded human version of AIDS, vets don't
    want to talk about it for fear of panic, I've been told.
    
    If I hear of anymore clinical information I'll convey them to you.
    
    Cheri
    
711.15IT IS POSITIVE IN HOPKINGTON,MASS.SCOMAN::ROCKWed Sep 21 1988 16:3916
    WELL THE SECOND TEST ON THE HORSE IN HOPKINGTON CAME BACK YESTERDAY.
    
    IT IS POSITVE. THE HORSE DOES HAVE THE POTOMIC FEVER. MY VET IN
    SOUTHBORO STARTED VACCINATING OUR HORSES AND HERS LAST WEEK.
    
    SO ANYONE THAT IS CONCERNED ABOUT THIS ILLNESS SHOULD CONTACT THIER
    
    VET RIGHT AWAY. 
    
    ALSO NONE OF MY HORSES (5) HAD ANY PROBLEM WITH STIFFNESS OR SWELLING
    FROM THE SHORTS GIVEN. BUT MY 6 MONTH FOAL HAD A STIFF NECK A LITTLE
    AND SOME SWELLING THE NEXT DAY BUT WAS FINE THE FOLLOWING DAY.
    
    GOOD LUCK TO YOU ALL...
    
    TR
711.16Potomac Fever written up in EquusKOAL::AIKENArabian Horse Breeder DTN378-6706Wed Sep 21 1988 23:0052
    Potomac Horse Fever did start along the Potomac River in Maryland,
    hence the name.  The last I read, it is thought to be transmitted
    by an insect such as a tick.  Dog flea/tick powder rubbed into the
    manes and tails is supposed to help repel the insects.
    
    A friend of mine (who had two cases in her barn) said she first
    notices that the horse goes off his feed and acts droopy.  She checks
    the gums; pink with a dark pink line where teeth and gums meet is
    apparently symptomatic.  When the fever hits the diarrhea stage,
    it's much harder to save the horse.  
    
    A blood test is necessary to confirm the disease.  Pepto Bismol
    helps with the diarrhea.  We also give strawberry flavored yogurt
    to replace the "good" bacteria in the gut.  (Don't ask me why they
    seem to prefer strawberry!)
    
    We haven't had the disease here and I hope we don't.  We have had
    a lingering case of something that could be strangles.  Same apparent
    symptoms:  initially high fever (103-106) that drops to 99 after
    Bute and penicillin -- the next day!  There may be a runny nose,
    often thick pus, yellow or greenish, but sometimes nearly clear,
    especially if the fever is high.  If left untreate, there may be
    coughing from swollen glands preventing passage of food.  Bute,
    or
    Ascriptin for youngsters, will reduce the swelling so the horse
    can eat.  Sometimes you need Robitussin, too for the cough.  The
    temptation is to NOT give the Bute when the fever is down; however,
    the horse needs the antiinflammatory to reduce the swelling in his
    glands.
    
    We have sprayed the barn, stalls, fence, paddock fences, buckets,
    etc., with a 50-50 mix of Clorox bleach and water.  It's supposed
    to kill Strep Equi, which causes strangles.  I haven't been able
    to get a good culture from either of the two babies who got very
    swollen lymph nodes that eventually abscessed.  A culture is the
    only way to know for sure what you're fighting.
    
    Anyway, back to Potomac Horse Fever, we gave shots last year, two
    each at $13 each.  This year, because of the other problem, we haven't
    revaccinated yet.  In Maryland, the PHF shots are given in August,
    the
    worst insect month.
    
    There have been several excellent articles in EQUUS about PHF. 
    Read them rather than panic.
The disease is no picnic, but so far, it's treatable if you know your
    horse and can identify changes/symptoms early on.  
    
    Good luck Massachusetts!
    
    Merrie
    
711.17PHF In Harvard MA!MPGS::SCHOFIELDFri Oct 28 1988 09:4318
    Just to update everyone on the Potomac Horse Fever situation.
    I had my vet out yesterday and she informed me that PHF is now
    something to be concerned about.  There where two horses in Hopkinton
    that were confirmed to have PHF.  One of the horses died.  There is now
    a case that came from Harvard, MA.  My vet was on the case.  The horse
    has been at Rochester.  It has had all the tests and it has been
    confirmed that the horse has PHF.  It was detected in time and they say
    that the horse will live.  I had my horse vacinated yesterday and there
    will be a booster shot that follows in 3 weeks.  The cost was $22.
    My vet is planning to notify all her customers by postcard recommending
    the vacine.  As she explained there is no alternative, because they
    don't know how the disease is contracted.  
    
                                           Wendy
    
                                           Wendy
    
    
711.18PBA::KEIRANMon Oct 31 1988 13:0010
    Just to let everyone know about the case of PHF in Harvard, the
    horse hasn't tested positive for the disease yet, as the test
    takes about 2-3 weeks to run.  The horse is now at Rochester,
    and when I hear the results, I'll let you know.  It got me rather
    concerned because I live about a mile from this horse, and my
    pregnant mare was never vaccinated before I got her.  I will be
    getting the shots from the vet this week, so by springtime, I'll
    be a little ahead of the game.
    
    
711.19PBA::KEIRANFri Nov 04 1988 14:0612
    Update of the PHF in Harvard, the horse is still in Rochester, and
    is remarkably better.  She has been on Tetracyclene since she got
    there, and since it was the first case Rochester has seen, they
    got in touch with some vets in Maryland to find out how to treat
    it.  The horse has lost massive amounts of weight, and according
    to her owner, she was extremely lucky to have survived the first
    night with this because she was so sick.  She is still being kept
    in quarentine, and even though the test hasn't come back confirming
    its definitly PHF, Rochester said they are 99% sure thats the case.
    This horse hasn't left her farm in well over a year, and how she
    came in contact with it is still a mystery, as this disease itself
    seems to be.