Article can be found here -
http://www.dogsnaturallymagazine.com/lifelong-immunity-vets/
The duration of immunity for Rabies vaccine, Canine distemper
vaccine, Canine Parvovirus vaccine, Feline Panleukopenia vaccine, Feline
Rhinotracheitis, feline Calicivirus, have all been demonstrated to be a
minimum of 7 years by serology for rabies and challenge studies for all
others.
In the Duration of Immunity to Canine Vaccines: What We Know and What
We Don’t Know, Proceedings – Canine Infectious Diseases: From Clinics
to Molecular Pathogenesis, Ithaca, NY, 1999, Dr. Ronald Schultz, a
veterinary immunologist at the forefront of vaccine research and chair
of the University of Wisconsin’s Department of Pathobiological Sciences,
outlines the DOI for the following vaccines:
Minimum Duration of Immunity for Canine Vaccines:
Distemper- 7 years by challenge/15 years by serology
Parvovirus – 7 years by challenge/ 7 years by serology
Adenovirus – 7 years by challenge/ 9 years by serology
Canine rabies – 3 years by challenge/ 7 years by serology
Dr. Schultz concludes: “Vaccines for diseases like distemper and
canine parvovirus, once administered to adult animals, provide lifetime
immunity.” “Are we vaccinating too much?” JAVMA, No. 4, August 15,
1995, pg. 421.
Yet vets continue to vaccinate annually. Dog owners feel that their
vets are doing their dogs a great service by vaccinating every three
years instead of annually – why do we allow it when these studies were
done over thirty years ago and have been replicated time and again by
other researchers?
Ian Tizard states: “With modified live virus vaccines like canine
parvovirus, canine distemper and feline panleukopenia, calicivirus, and
rhinotracheitis the virus in the vaccine must replicate to stimulate the
immune system. In a patient that has been previously immunized,
antibodies from the previous vaccine will block the replication of the
new vaccinal virus. Antibody titers are not significantly boosted.
Memory cell populations are not expanded. The immune status of the
patient is not enhanced.
After the second rabies vaccination, re-administration of rabies
vaccine does not enhance the immune status of the patient at one or two
year intervals. We do not know the interval at which re-administration
of vaccines will enhance the immunity of a significant percentage of the
pet population, but it is certainly not at one or two year intervals.
Tizard Ian, Yawei N, Use of serologic testing to assess immune status of companion animals, JAVMA, vol 213, No 1, July 1, 1998.
“The recommendation for annual re-vaccination is a practice that was
officially started in 1978.” says Dr. Schultz. “This recommendation
was made without any scientific validation of the need to booster
immunity so frequently. In fact the presence of good humoral antibody
levels blocks the anamnestic response to vaccine boosters just as
maternal antibody blocks the response in some young animals.”
He adds: “The patient receives no benefit and may be placed at
serious risk when an unnecessary vaccine is given. Few or no scientific
studies have demonstrated a need for cats or dogs to be revaccinated.
Annual vaccination for diseases caused by CDV, CPV2, FPLP and FeLV has
not been shown to provide a level of immunity any different from the
immunity in an animal vaccinated and immunized at an early age and
challenged years later. We have found that annual revaccination with the
vaccines that provide long-term immunity provides no demonstrable
benefit.”
Why then, have vets not embraced the concept of lifelong immunity in dogs?
“Profits are what vaccine critics believe is at the root of the
profession’s resistance to update its protocols. Without the lure of
vaccines, clients might be less inclined to make yearly veterinary
visits.
Vaccines add up to 14 percent of the average practice’s income,
AAHA reports, and veterinarians stand to lose big. I suspect some are
ignoring my work,” says Schultz, who claims some distemper vaccines last
as long as 15 years. “Tying vaccinations into the annual visit became
prominent in the 1980s and a way of practicing in the 1990s. Now
veterinarians don’t want to give it up.”
The report of the American Animal Hospital Association Canine Vaccine
Taskforce in JAAHA (39 March/April 2003)3 includes the following
information for vets:
Misunderstanding, misinformation and the conservative
nature of our profession have largely slowed adoption of protocols
advocating decreased frequency of vaccination'; ‘Immunological memory
provides durations of immunity for core infectious diseases that far
exceed the traditional recommendations for annual vaccination.
‘This is supported by a growing body of veterinary information as
well-developed epidemiological vigilance in human medicine that
indicates immunity induced by vaccination is extremely long lasting and,
in most cases, lifelong.’
Both the AAHA and the AVMA must do more to “step up to the plate”
says noted immunologist, Dr. Richard Ford. But the reality is the vets
do not have to listen to the AAHA or the AVMA and it appears the state
veterinary medical boards are not interested in enforcing vaccine
schedules, opting to leave it up to the individual vet.
Dr. Bob Rogers hired a Chicago based law firm and initiated a class
action suit for pet owners who were not given informed consent and full
disclosure prior to vaccination administration. His article entitled
“The Courage to Embrace the Truth”, states “While attending conferences
like WSVMA and NAVMC I have asked over 400 DVMs from various parts of
the country if they attended the seminars on New Vaccination Protocols. I
was told by all but one, “I don’t care what the data says, I am not
changing.” One DVM here on VIN even said “I am not changing until the
AVMA makes me change.”
It seems that pet owners are against the wall when it comes to
vaccination. The obvious conclusion is that pet owners who are concerned
about the long term health of their companion animals must take it upon
themselves to research vaccines, duration of immunity and vaccine
dangers. At the very least, question every vaccine that goes into your
animal – but none of the above information indicates you will get an
honest or well-informed answer.
Be your dog’s advocate – protect him with knowledge and by taking a
stand against unnecessary vaccination. His life may depend on it!