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Feline leukemia (FeLV) is a complex disease that blocks cats' natural ability to fight off germs. It does not yet have a cure. Most cat owners are familiar with this deadly disease, but many are unaware of how serious it is. Now cat owners have more options because researchers have discovered so much about FeLV. Your cat's life depends on your efforts to fight the disease. The more you know about FeLV, the better your strategy will be. Feline leukemia most commonly is transmitted through saliva, but it also is transferred through urine and feces. Some cats are more likely to become actively infected than others. Those who spend part or all of their time outdoors also are at high risk, because the more time a cat is outside, the more chances it has of contacting an infected animal. Age also affects cats' vulnerability. Kittens are less able to fight FeLV because their immune systems are not fully developed. Cats more than 10 year old also are more susceptible because their immune systems are weaker. Feline leukemia goes through several stages after entering a cat's eye and nose membranes, says William D. Hardy Jr., V.M.D., of Cornell University. It first travels to lymph nodes in the throat, where it begins to reproduce, infecting the cat's white blood cells. Eventually the virus enters the bone marrow and contaminates the cat's growing blood cells. Circulating blood then carries the virus to the salivary glands, respiratory cells, and urinary tract. About 56 days after invading its host, the virus becomes present in the cat's saliva and urine, and can be passed to other cats. After it is exposed to the disease, a cat's system could react in different ways. About 40 percent of exposed cats - usually those who are healthy and stress-free - manage to destroy the disease and become immune to it. The other 60 percent divide into carriers and symptomatic cats:
Symptomatic cats may not show any physical signs right away and may inadvertently pass the disease to other cats. Until symptoms start to appear, clinical testing is the only way to detect feline leukemia. Although we do not have ways to stop the disease, veterinarians can control secondary infections with antibiotics, anemia with blood transfusions, and cancers with chemotherapy. Unfortunately, repeated treatment is expensive and does not completely alleviate a cat's suffering. Instead of prolonging the inevitable, many owners of actively infected cats opt for euthanasia. Before scientists could vaccinate against FeLV, most veterinarians recommended euthanasia for FeLV-positive cats whether or not they had symptoms. This policy was meant to control the spread of the disease. Now that we have a vaccine, owners have the option to keep their infected cats if the cats are not suffering. If making such a decision, an owner must isolate the infected cat as much as possible because carriers can still pass the disease to unvaccinated cats. Fighting feline leukemia involves three steps:
By staying current with your cat's yearly vaccines and keeping it away from unfamiliar cats, you can give your feline friend the best chances possible for an FeLV-free life. For more information about feline leukemia and cat care in general, visit Web Resources For Cat Lovers. |
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Please consult your veterinarian before making decisions about your cat's health. |
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