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Question
I took my rabbit (dwarf lop)to the vet for a checkup as he had been on antibiotics for an ear infection. He had greatly improved. he was happy today and came up to me for a cuddle. bu t before I left I reminded the vet for my rabbit's yearly calisi vaccination, of which he gave it to him.(my rabbit was 4.5 years  old and had the vaccination every year). I drove home and he went to his usual part of the house.About one hour later I saw him on the floor trying to move himself by the back legs(in other words he could not walk).My daughter picked him up and his heart was beating fast.I rang the vet and took him there. on the way, my daughter saw him closing his eyes and his heart slowing down. when we arrived at the vet, he took the rabbit with him to the back. he came back saying that our beautiful rabbit had passed away. He injected adrenaline into his heart but it was too late.He has had no experience of a rabbit dying from the injection. he has used the same batch on other rabbits with no problems.The vet can't explain what brought about his death (he had a heart attack).How can a healthy rabbit die suddenly from such an injection (given that he has had three injections in the last 3 years with no issues).Could you please shed some light/
Many thanks,
Tony

Answer
Dear Tony,

I am so sorry about the terrible tragedy your family suffered.  

It is very strange that he should have a reaction to the injection more than an hour after the shot.  If there is to be an anaphylactic (allergic) reaction to the serum in which the vaccine is delivered, it usually happens relatively quickly after the injection.

There is a possibility that this was not directly related to the vaccination, though the coincidence would certainly lead one to suspect this.  It is possible that your bunny suffered an embolism or some other silently deadly disorder that took his life.  Even a necropsy might not reveal this, and it is too late for that now.

One cannot be sure he had a heart attack as the primary cause of death.  In fact, cardiac arrest might have simply followed a general anaphylactic reaction as a matter of course.  This type of situation is very rare, but not impossible.

I am so very sorry.  

Sincerely,
Dana

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Dana Krempels, Ph.D.

Expertise

I've lived with companion rabbits for more than 35 years, and consider them members of my family. I can answer any questions about the biology and health of rabbits, from the commonplace to the unusual. But please note:

RULE #1:
THE INTERNET IS NOT THE PLACE TO SEEK HELP IN AN EMERGENCY.

...it is an EMERGENCY.

Find a rabbit vet at www.rabbit.org/vet for immediate help, and don't risk your bunny's life by spending time asking questions online! If you can't get in touch with your vet, read these Emergency Sick Bunny Instructions.

If you have found a wild baby rabbit, please read these EMERGENCY INSTRUCTIONS FOR WILD BABY RABBITS and then use this link to FIND A LOCAL WILDLIFE REHABILITATOR who can give you the right advice.


RULE #2:
Help me help you! Please make your subject line informative if you have an urgent question. then LET ME KNOW IN THE SUBJECT LINE so I can give your question highest priority over non-urgent questions. If you don't do this, then I can't guarantee timely assistance!

For all the best, most accurate rabbit health, care and behavior information, visit The House Rabbit Society.

Experience

I have been rescuing and rehabilitating domestic and wild rabbits for about 30 years. I have written articles for many rabbit rescue publications, as well as for the veterinary journal, Exotic DVM. I own EtherBun, the internet's largest listserve dedicated to health, care, and behavior of domestic rabbits.

Organizations
Houserabbit Adoption, Rescue, and Education, Inc. (H.A.R.E., Inc.) president National House Rabbit Society (Board member)

Publications
Exotic DVM
Warren Peace (Journal of the House Rabbit Society of Miami)
Various newsletters of the House Rabbit Society, nationwide

Education/Credentials
Ph.D - Biology
B.S. - Biology
B.A. - English

Awards and Honors
Lightspan Academic Excellence Award for web site on rabbit health and biology
(http://www.bio.miami.edu/hare)

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