Friday, November 21, 2014

Pet Vaccinations: Understanding Vaccinations for Your Cat or Dog

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WebMD Pet Health Feature


Many pet owners and some animal scientists believe that we are over vaccinating our pets. They also think that some shots may be doing more harm than good. One type of cancer in cats, for example, is known to be caused by vaccinations. In addition, vaccines can cause allergic reactions.
Because reports and rumors of side effects have become so widespread, pet owners increasingly are asking their vets about whether or not to vaccinate. Andy Smith, DVM, a long-time Atlanta veterinarian, says he has “this conversation with a client twice a week. It’s clear there’s a lot of confusion and concern.” So WebMD went to some top veterinary experts to find answers you can use in sorting out your own concerns.

Why do pets need vaccines?

Vaccines protect against contagious, potentially fatal diseases, says Margret Casal, DMV, PhD. Casal is associate professor of medical genetics at the School of Veterinary Medicine, University of Pennsylvania. Vaccines trigger immune responses, she says, and prepare pets to fight future infections.
Casal tells WebMD that vaccines have saved millions of pet lives. And even though some once common diseases are now rare, she says veterinary groups agree that many vaccines are still necessary.

Is there a vaccination controversy?

Yes, says Andrea Looney, DVM, of Cornell University. Some experts advocate yearly shots, others every three years, and a few believe no more vaccines are needed after the first year. 
Looney says it’s similar to controversies over human vaccines. “There’s a lot of talk,” she says, “but no evidence [of widespread harm].”
Casal says fears sparked by this “over vaccination” controversy have led many pet owners to skip shots for preventable diseases, causing an alarming rise in pet deaths.

So should all dogs and cats still be vaccinated?

“Absolutely,” says Ronald Schultz, DVM, a pioneer in clinical immunology at the University of Wisconsin-Madison. But Schulz is also very much in agreement with those who say pets are being over vaccinated, calling it a “serious problem.” Often, he says, pets are vaccinated by vets who just want to keep clients coming in. But too many vaccines, especially when given in “combo shots,” can “assault” immune systems. 

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