PERMISSION GRANTED TO CROSS-POST THIS MESSAGE.In response to questions about Lyme disease in dogs and the Lyme vaccine, I would like to share the advice that Dr. Ronald Schultz, Chair of Pathobiological Sciences at the University of Wisconsin School of Veterinary Medicine gave me for my 2 dogs, who both receive(d) (one died in July from a mast cell tumor which developed at a rabies vaccination site) 100+ tick bites a summer.
I was concerned after having contracted Lyme twice myself; however, none of the dogs we have had over 30 years were ever vaccinated against Lyme or ever contracted the disease. After getting it myself, I was reconsidering.
Dr. Schultz advised me that there was far more risk associated with the Lyme vaccine than there was with antibiotics to treat the disease if one or both dogs contracted Lyme. He further explained that if they tested positive for Lyme, but displayed no symptoms, then not to treat them with antibiotics because it indicated that they had been exposed to the disease, but hadn’t contracted the disease. However, he said, that if they tested positive for Lyme and had symptoms (lameness, fever, lethargy, etc..), then start treatment. Dr. Schultz elaborated by telling me that in vaccinology, immunology, the point is not to prevent infection, it is to prevent disease. In fact, low-grade infections are introduced to elicit immune responses, which is how vaccination works, by introducing an attenuated (weakened) antigen into the animal’s system.
Further, he said that a
positive Lyme test in an ASYMPTOMATIC dog merely reflects the fact that the dog has been exposed; positive Lyme test in a dog with SYMPTOMS indicates that the animal has contracted the disease and needs treatment. Based on his advice, I have chosen to not vaccinate my dog(s) against Lyme. Below are links to a few articles on the subject which may help you in deciding whether or not to vaccinate your dog against Lyme.
Lyme is a
“killed†vaccine and is associated with clinically significant adverse reactions. According to the
2003 AAHA Guidelines (Page 16),
“…killed vaccines are much more likely to cause hypersensitivity reactions (e.g., immune-mediated disease).†Further, the AAHA task force reports on Page 18 that,
“Bacterial vaccines, especially killed whole organism products …..are much more likely to cause adverse reactions than subunit or live bacterial vaccines or MLV vaccines, especially if given topically. Several killed bacterial products are used as immunomodulators/adjuvants. Thus, their presence in a combination vaccine product may enhance or suppress the immune response or may cause an undesired response (e.g., IgE hypersensitivity or a class of antibody that is not protective).â€Dr. Alice Wolf, Professor of Small Animal Internal Medicine at Texas A&M College of Veterinary Medicine, stated in an address
Vaccines of the Present and Future WSAVA 2001 – Vaccines of the Present and Future at the 2001 World Small Animal Veterinary Association World Congress that Lyme vaccines :
“are only partially effective and may cause serious immune-mediated consequences in some dogs that are as serious or more serious than the disease itself…..The most reactive vaccines for dogs include leptospirosis bacterin and Borrelia [Lyme]vaccine .â€.Canine Lyme, What’s New? Vet Tech: Canine Lyme: What’s New? No Lyme Vaccine for Charlie Nancy Freedman Smith, Maine Today
Error “
It is not a scientifically based recommendation to suggest that all dogs in Maine should be vaccinated with Lyme Vaccine. There may be select areas in the state, “hot spots†where infection is very high and vaccination would be indicated, but dogs in most parts of the state would probably not receive benefit and may actually be at risk of adverse reactions if a large scale vaccination program was initiated. Wisconsin has a much higher risk of Lyme than Maine, however at our Veterinary Medical Teaching Hospital (VMTH) we have used almost no Lyme vaccine since it was first USDA approved in the early 1990′s. What we have found is infection (not disease), in much of Wisconsin, is low (<10% infection).
As you know, infection does not mean disease. About 3 to 4% of infected dogs develop disease. In contrast, in Western and Northwestern parts of Wisconsin infection occurs in 60 to 90% of all dogs. In those areas, vaccination is of benefit in reducing clinical disease. ……..
Also, vaccinated dogs can develop disease as efficacy of the product is about 60 to 70% in preventing disease, thus antibiotics must be used in vaccinated dogs developing disease, just like it must be used in non-vaccinated diseased dogs. Therefore, in general areas with a low infection rate <10>50%) then the vaccine will be very useful.
Thus, I believe it is irresponsible to suggest that all dogs in Maine should be vaccinated . Veterinarians should know, based on diagnoses in their clinic and other clinics in the area (town), how common the disease would be and they should base their judgment to vaccinate on risk, not on a statement that all dogs in Maine need Lyme vaccine!
R.D. Schultz
_______________________________ Ronald D. Schultz, Professor and Chair
Department of Pathobiological Sciences School of Veterinary Medicine
University of Wisconsin-Madison 2015 Linden Drive West Madison, WI 53706″
