|
Protect
your pet!
LYME
DISEASE : Questions and Answers
What is Lyme disease?
Lyme disease is caused by a
spirochete called Borrelia burgdorferi. A spirochete is a type of
bacterium. It is transmitted to dogs (cats my be infected as well, but
it is more rare) through the bite of a tick. Once in the bloodstream,
they Lyme disease organism is carried to many parts of the body and is
likely to localize in joints. It was first thought that only a few
types of ticks could transmit this disease, but now it appears that several
common species may be involved. The most common type of tick to carry
Lyme disease is the deer tick.
Can Lyme disease also affect people?
Yes, but people do not get it
directly from infected dogs. They get it from being bitten by the same
ticks that transmit it to dogs. Therefore, preventing exposure to
ticks is important for both you and your pet. The flea and tick
product Frontline
has been shown to be very effective against the deer ticks here in northern
Wisconsin.
What are the clinical signs?
Many people with Lyme disease
develop a characteristic "bull's-eye" rash at the site of the bite within a
few days. For these people, the disease can be easily diagnosed at an
early stage. However, symptoms of Lyme disease are more difficult to
detect in animals than in people.
The
characteristic rash does not develop in dogs. Because the other
symptoms of the disease may be delayed or not recognized and because
symptoms are similar to those of many other diseases, Lyme disease in
animals is often not considered until other diseases have been eliminated.
Generally, dogs affected with Lyme disease are taken to a veterinarian
because they seem to be experiencing generalized pain and have stopped
eating. Affected dogs have been described as if they were "walking on
eggshells." Often these pets have high fevers. Pets may also
begin limping. This painful lameness often appears suddenly and may
shift from one let to another. If untreated, it may eventually
disappear, only to recur weeks or months later.
Some pets
are affected with Lyme disease organism for a year before they finally show
symptoms. By this time, the disease may be quite widespread in the
body.
How is Lyme disease diagnosed?
Dogs with lameness, swollen
joints, and fever are suspected of having Lyme (Borreliosis) disease.
However, other diseases may also cause these symptoms. There are blood
tests that may be used for confirmation. An antibody test does not
detect the actual spirochete in the blood but does detect the presence of
antibodies created by exposure to the Borrelia organism. A test can be
falsely negative if the dog is infected but has not yet formed antibodies,
or if it never forms enough antibodies to cause a positive reaction.
This may occur in animals with suppressed immune systems. A positive
test indicates exposure to the organism (Borrelia burgdorgeri) but does not
confirm the disease itself. A positive test along with clinical signs
and response to treatment are often definitive for the diagnosis. A
positive test in a dog without clinical signs indicates exposure to the
organism. That pet may or may not go on to develop Lyme disease in the
future. Because of the seriousness of Lyme disease and its potential
to cause arthritis, kidney problems, and heart problems, we recommend
treating these exposed pets with the antibiotic doxycycline for 4 weeks.
This will reduce the number of
organisms that may still be in the pet's system and can help to avoid future
complications due to the Borrelia organism.
How is Lyme disease treated?
Because the Lyme spirochete is a
bacterium, it can be controlled by antibiotics. However, a lengthy
course of treatment is necessary and may not always completely eradicate the
organism. Occasionally, the initial infection will recur, or the pet
will become re-infected after being bitten by another infected tick.
How do I remove a tick from my dog?
Check your pet immediately after
it has been in a tick-infected area. The deer tick is a small tick and
only about pinhead size in juvenile stage, but a little more obvious in
adult phase and after feeding.
If you find a tick moving on
your pet, the tick has not fed. Remove the tick promptly and place it
in rubbing alcohol or crush it between two solid surfaces.
If you find a tick attached to
your pet, grasp the tick with fine tweezers or your finger nails near the
dog's skin and firmly pull it out. We have found that the analogy of
"unscrewing it like you would a light bulb" helps to remove it entirely.
How can I protect my dog from Lyme
disease?
Protection is two-fold. A
vaccine is available for building immunity to protect dogs against Lyme
disease. This vaccine is initially given twice, at two-week intervals.
Annual revaccination is also necessary to maintain immunity. The
vaccine has been shown to be safe and very effective.
The key to prevention is keeping
your dog from being exposed to ticks. Ticks are found in grassy,
wooded, and sandy areas. They find their way onto an animal by
climbing to the top of a leaf, blade of grass, or short trees. Here
they wait until their sensors detect a close-by animal )or person) on which
to crawl or drop. Keeping animals from thick underbrush reduces their
exposure to ticks.
The second important step is
using a product, such as
Frontline,
to help control ticks during spring, summer and fall.
|