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Pets don't need shots every year
Houston Chronicle ^ | April 22, 2002, 12:32AM | LEIGH HOPPER, Houston Chronicle Medical Writer

Posted on 04/22/2002 6:20:53 AM PDT by Cincinatus' Wife

Experts say annual vaccines waste money, can be risky

Debra Grierson leaves the veterinarian's office clutching Maddie and Beignet, her Yorkshire terriers, and a credit card receipt for nearly $400.

That's the cost for the tiny dogs' annual exams, including heartworm checks, dental checks and a barrage of shots.

"They're just like our children," said the Houston homemaker. "We would do anything, whatever they needed."

What many pet owners don't know, researchers say, is that most yearly vaccines for dogs and cats are a waste of money -- and potentially deadly. Shots for the most important pet diseases last three to seven years, or longer, and annual shots put pets at greater risk of vaccine-related problems.

The Texas Department of Health is holding public hearings to consider changing the yearly rabies shot requirement to once every three years. Thirty-three other states already have adopted a triennial rabies schedule. Texas A&M University's and most other veterinary schools now teach that most shots should be given every three years.

"Veterinarians are charging customers $36 million a year for vaccinations that are not necessary," said Bob Rogers, a vet in Spring who adopted a reduced vaccine schedule. "Not only are these vaccines unnecessary, they're causing harm to pets."

Just as humans don't need a measles shot every year, neither do dogs or cats need annual injections for illnesses such as parvo, distemper or kennel cough. Even rabies shots are effective for at least three years.

The news has been slow to reach consumers, partly because few veterinarians outside academic settings are embracing the concept. Vaccine makers haven't done the studies needed to change vaccine labels. Vets, who charge $30 to $60 for yearly shots, are loath to defy vaccine label instructions and lose an important source of revenue. In addition, they worry their patients won't fare as well without yearly exams.

"I know some vets feel threatened because they think, `People won't come back to my office if I don't have the vaccine as a carrot,' " said Alice Wolf, a professor of small-animal medicine at Texas A&M and an advocate of reduced vaccinations. "A yearly exam is very important."

The movement to extend vaccine intervals is gaining ground because of growing evidence that vaccines themselves can trigger a fatal cancer in cats and a deadly blood disorder in dogs.

Rogers conducts public seminars on the subject with evangelical zeal but thus far has been unsuccessful in persuading the Texas Veterinary Medical Association to adopt a formal policy.

"I'm asking the Texas attorney general's office if this is theft by deception," said Rogers, whose Critter Fixer practice won an ethics award from the Better Business Bureau in 2000. "They just keep coming out with more vaccines that are unnecessary and don't work. Professors give seminars, and nobody comes and nobody changes."

When rabies shots became common for pets in the 1950s, no one questioned the value of annual vaccination. Distemper, which kills 50 percent of victims, could be warded off with a shot. Parvovirus, which kills swiftly and gruesomely by causing a toxic proliferation of bacteria in the digestive system, was vanquished with a vaccine. Over the years, more and more shots were added to the schedule, preventing costly and potentially deadly disease in furry family members.

Then animal doctors began noticing something ominous: rare instances of cancer in normal, healthy cats and an unusual immune reaction in dogs. The shots apparently caused feline fibrosarcoma, a grotesque tumor at the site of the shot, which is fatal if not discovered early and cut out completely. Dogs developed a vaccine-related disease in which the dog's body rejects its own blood.

"That really caused people to ask the question, `If we can cause that kind of harm with a vaccine ... are we vaccinating too much?' " said Ronald Schultz, a veterinary immunologist at the University of Wisconsin School of Veterinary Medicine. "As you get more and more (vaccines), the possibility that a vaccine is going to cause an adverse event increases quite a bit."

Less frequent vaccines could reduce that risk, Schultz reasoned. Having observed that humans got lifetime immunity from most of their childhood vaccines, Schultz applied the same logic to dogs. He vaccinated them for rabies, parvo, kennel cough and distemper and then exposed them to the disease-causing organisms after three, five and seven years. The animals remained healthy, validating his hunch.

He continued his experiment by measuring antibody levels in the dogs' blood nine and 15 years after vaccination. He found the levels sufficient to prevent disease.

Fredric Scott, professor emeritus at Cornell University College of Veterinary Medicine, obtained similar results comparing 15 vaccinated cats with 17 nonvaccinated cats. He found the cats' immunity lasted 7.5 years after vaccination. In 1998, the American Association of Feline Practitioners published guidelines based on Scott's work, recommending vaccines every three years.

"The feeling of the AAFP is, cats that receive the vaccines every three years are as protected from those infections as they would be if they were vaccinated every year," said James Richards, director of the Feline Health Center at Cornell. "I'm one of many people who believe the evidence is really compelling."

Texas A&M's Wolf said the three-year recommendation "is probably just as arbitrary as anything else," and nothing more than a "happy medium" between vaccine makers' recommendations and the findings by Schultz and Scott aimed at reducing vaccine-related problems.

But many vets are uncomfortable making a drastic change in practice without data from large-scale studies to back them up. There is no animal equivalent of the U.S. Centers for Disease Control and Prevention, which monitors outbreaks of vaccine-preventable disease in people, thus keeping tabs on a vaccine's effectiveness.

Federal authorities require vaccine makers to show only that a vaccine is effective for a reasonable amount of time, usually one year. Richards notes that studies to get a feline vaccine licensed in the first place are typically quite small, involving 25 to 30 cats at most.

There is no federal requirement to show a vaccine's maximum duration of effectiveness. Arne Zislin, a veterinarian with Fort Dodge Animal Health, the largest animal vaccine maker in the world, said such studies would be expensive and possibly inhumane, requiring hundreds of animals, some of them kept in isolation for up to five years.

"I don't think anyone with consideration for animals would really want to go through that process," said Zislin, another vet who believes current data are insufficient to support an extended schedule.

Diane Wilkie, veterinarian at Rice Village Animal Hospital, said she tells pet owners that vaccines appear to last longer than a year, but her office hasn't officially changed its protocol yet. She said 20 percent to 30 percent of her cat patients are on the extended schedule.

"It's kind of a hard situation. The manufacturers still recommend a year, but they're the manufacturers," Wilkie said. "It's hard to change a whole professional mentality -- although I do think it will change."

In Houston, yearly pet examinations typically cost $50 to $135, with shots making up one-third to half of the expense. A dental check, heartworm test, fecal check and overall physical are usually included in the price. Without the shots, vets could expect to lose a chunk of that fee.

But an increasing number of vets are emphasizing other services, such as surgery. Wolf said savings on vaccines might prompt pet owners to get their pets' teeth cleaned instead. An in-house test to check antibody levels is in development.

"I definitely think there's a profit issue in there; don't get me wrong," Wilkie said. "(But) people are willing to spend money on their pets for diseases. Although vaccines are part of the profit, they aren't that big a part. We just did a $700 knee surgery."

Vaccination findings

Veterinary research challenges the notion that pets need to be vaccinated every 12 months. Some of the findings:

Dog vaccines/Minimum duration of immunity

· Canine rabies3 years

· Canine parainfluenza3 years

· Canine distemper (Onderstepoort strain)5 years

· Canine distemper (Rockborn strain)7 years

· Canine adenovirus (kennel cough)7 years

· Canine parvovirus7 years

Cat vaccines/Minimum duration of immunity

· Cat rabies3 years

· Feline panleukopenia virus6 years

· Feline herpesvirus5 or 6 years

· Feline calicivirus3 years

Recommendations for dogs

· Parvovirus, adenovirus, parainfluenza, distemper: Following initial puppy shots, provide booster one year later, and every three years thereafter.

· Rabies: At 16 weeks of age, thereafter as required by law.

· Bordatella: Use prior to boarding; may be repeated up to six times a year.

· Coronavirus: Not recommended in private homes. Prior to boarding, may be given to dogs 8 weeks or older, and repeated every six months.

· Lyme: Not recommended.

· Giardia: Not recommended.

Recommendations for cats

· Panleukopenia, herpesvirus (rhinotracheitis), calicivirus: Following initial kitten shots, provide booster one year later and every three years thereafter.

· Rabies: At 8 weeks of age, thereafter as required by law.

· Feline leukemia: Use only in high-risk cats. Best protection is two vaccines prior to 12 weeks of age, with boosters repeated annually.

· Bordatella: Use prior to boarding.

· Feline infectious peritonitis: Not recommended.

· Chlamydia: Not recommended.

· Ringworm: May be used during an outbreak in a home.

Sources: Ronald Schultz, University of Wisconsin School of Veterinary Medicine; Fredric Scott, Cornell University College of Veterinary Medicine; Colorado State University; University of California-Davis Center for Companion Animal Health.


TOPICS: Business/Economy; Culture/Society; Miscellaneous; News/Current Events; US: Texas
KEYWORDS: vaccines
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To: Pokey78
PETA is going to be coming after you =^(
21 posted on 04/22/2002 6:49:43 AM PDT by Cincinatus' Wife
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To: Cincinatus' Wife
Actually we were talking about this, all the pet owners we know, long before the vets ever said anything. We know a lot of people who would get their pets vaccinated annually and then would get cancers at the site of the vaccination. We know about a lot of vets who still won't discuss it. Needless to say, I no longer no anyone who goes to those vets. And I don't know anyone who's still getting their animal(s) vaccinated annually. Their obstinance in dealing with this is really giving the veterinary profession a black eye.

As for kennels and groomers, we've always had cats so I've never needed either (we have folks cat-sit for us). I can understand their concern about the spread of disease, but if they don't start asking more questions about what they're insisting on, they're going to be in as much hot water as the vets.

22 posted on 04/22/2002 6:51:44 AM PDT by mewzilla
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To: endeavor
Your wise opinion, please.
23 posted on 04/22/2002 6:52:37 AM PDT by Hillary's Lovely Legs
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To: mewzilla
I can tell you what might change things, though I hate to say it: lawsuits. And frankly, if the veterinary profession doesn't get its act together, I'd say they'd deserve them.

"Recommended by manufaturers" would be a good place to leverage change.

24 posted on 04/22/2002 6:52:42 AM PDT by Cincinatus' Wife
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To: Lizzy W
nice cat and cute p.j.s too!
25 posted on 04/22/2002 6:53:07 AM PDT by Diva Betsy Ross
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To: Cincinatus' Wife
At least in Charleston, SC, vets may be reaching a consensus on vaccination. My old vet does not recommend FELV for inside kitties (who test negative) because of the tumor risk at injection site. And, my new vet does not suggest yearly vaccinations for indoor kitties. However, I'm not sure if this recommendation stands when there is also a dog in the house (because some of these disease-causing organisms can be tracked in from outdoor pets).
26 posted on 04/22/2002 6:55:45 AM PDT by Lizzy W
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To: 1Old Pro
Vets are a cash machine

Big-time! Vets are about as bad as dentists in prescribing unnecessary "care". I never thought that all the shots were a scam, but I have always suspected the heartworm pills to be nothing but a profit engine.

27 posted on 04/22/2002 6:55:54 AM PDT by StockAyatollah
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To: Cincinatus' Wife
Ain't that the truth! And now that I think about it, I can't help but wonder whether or not this discussion has any applicability to the controversy over all the vaccinations that are being insisted upon for kids?
28 posted on 04/22/2002 6:56:21 AM PDT by mewzilla
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To: mewzilla; All
Their obstinance in dealing with this is really giving the veterinary profession a black eye.

We had a TV report on this in Houston about 6 months back. It just scratched the surface but they interviewed vets, they intervied two vets, one who took one side one who took the other. With the information available to them, if they continue to insist on the pets getting yearly shots, they are only in business for the money and it's time to change vets.

29 posted on 04/22/2002 6:56:35 AM PDT by Cincinatus' Wife
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To: Lizzy W
Thank you for the info!
30 posted on 04/22/2002 6:57:49 AM PDT by Cincinatus' Wife
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To: Lizzy W
Thanks. Reagan is gorgeous! I always wanted a white cat like that.

But, if I must... Poor Fidget gets photographed so much. Here are two of her latest.

That is her ROTFL! pose.

Sorry, I just can't help myself...

31 posted on 04/22/2002 6:58:00 AM PDT by abner
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To: abner
Cute kitties.
32 posted on 04/22/2002 6:58:15 AM PDT by Cincinatus' Wife
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To: No More Gore Anymore
Thanks, they're fine-whaled corduroy -- the PJs, that is. The cat is not corduroy ;)
33 posted on 04/22/2002 6:58:49 AM PDT by Lizzy W
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To: abner
You've been a doting parent but enough!
34 posted on 04/22/2002 6:59:39 AM PDT by Cincinatus' Wife
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To: Cincinatus' Wife
I can understand a difference of opinion. What I can NOT understand is refusing to engage in full disclosure. Tell the owners about the problems and let them decide. With the exception of one vet, everyone else we know has had to raise the subject themselves. The vets have not volunteered the info.
35 posted on 04/22/2002 7:01:39 AM PDT by mewzilla
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To: Jean Chauvin
FYI Bump
36 posted on 04/22/2002 7:02:01 AM PDT by Wrigley
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To: Cincinatus' Wife
Oh, alright. LOL!
37 posted on 04/22/2002 7:02:02 AM PDT by abner
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To: abner
Awwww to all the cat pics. Maybe Mr. Robinson should have a Cats Of FreeRepublic fundraising calender. (^..^)///
38 posted on 04/22/2002 7:03:32 AM PDT by mewzilla
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To: mewzilla
With the exception of one vet, everyone else we know has had to raise the subject themselves. The vets have not volunteered the info.

Maybe a few freepers can e-mail this information to news outlets. That way, more pet owners will know to ask.

39 posted on 04/22/2002 7:04:24 AM PDT by Cincinatus' Wife
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To: 1Old Pro
WOW, I've been waiting to read this article for a decade or more.

Bump!

40 posted on 04/22/2002 7:05:04 AM PDT by Cincinatus' Wife
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