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คุณจิล จากชมรมไทยบางแก้วสหรัฐอเมริกา ได้ส่งข่าวสารเรื่องการฉีดวัคซีนที่ถูกต้องมาให้อ่านกัน ดังนี้
Vaccine Should Protect Dogs
Tulsa World, May 14, 2005
by DENISE FLAIM Newsday
At first glance, it sounds like an epidemic.
Last year, 120 shelter dogs in Chicago died of canine distemper. The usually
fatal viral disorder also hit Los Angeles, Miami, Phoenix, Atlanta, Dallas
and Washington state.
Last month New York City's Animal Care & Control issued a news release
headlined "Protect Your Pets, New York" urging owners to "fully immunize"
their animals. And just last week, shelter officials confirmed a distemper
case in a dog that had reportedly been vaccinated.
But before you speed-dial your vet to schedule a distemper booster, listen
to vet Ronald Schultz, chairman of pathobiological sciences at the
University of Wisconsin School of Veterinary Medicine at Madison, who has
been studying the efficacy of canine vaccines since the 1970s.
"The idea that outbreaks occurred as a result of owners inadequately
vaccinating their dogs really is not the case at all," says Schultz, who was
part of a task force studying the Chicago outbreak. "If a dog was
effectively vaccinated as a puppy, and very certainly if it was ever
vaccinated at a year old, it is immune for life."
Schultz adds that the majority of the sick Chicago dogs had never been
vaccinated.
By contrast, he says, "the vaccinated pet population in Chicago never had
any problem."
Distemper was the leading cause of death among dogs until the 1950s, when a
vaccine was introduced. Until recently, it has been considered an "old"
disease -- not quite eradicated, but generally under control, with shelters
normally seeing only a handful of cases.
Schultz notes that today, canine distemper is still prevalent among
wildlife, including raccoons, coyotes and foxes. That is likely how the
Chicago outbreak began, he adds: Vehicles used to transport stray dogs had
previously picked up infected raccoons, providing a point of transmission.
With the distemper vaccine, Schultz says, one jab will do you -- provided
the shot imparts immunity. That can be gauged with a titer, a blood test
that measures antibody levels.
Puppies are trickier. During their first weeks of life, they are protected
by maternal antibodies from their mothers. Vaccinating too early can result
in those antibodies interfering with the vaccine, leaving the puppy more
vulnerable than before.
And the age at which maternal immunity fades varies from puppy to puppy.
Schultz says that at 6 weeks, about half of puppies no longer have maternal
immunity; at 9 weeks, it's about 75 percent; and at 12 weeks, about 90
percent. Given those odds, he recommends keeping a puppy relatively isolated
until 12 weeks, then vaccinating. Several weeks later, owners should titer,
and, if the puppy has inadequate antibody levels, revaccinate.
Ed Boks, executive director of New York City's Animal Care & Control, says
that, in shelters, mass vaccination is crucial for avoiding outbreaks.
"Veterinarians in general don't know much about vaccines, and they know less
about immunology," he says.
(C) 2005 Tulsa World. via ProQuest Information and Learning Company; All
Rights Reserved
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vichien_b 
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