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The <strong>Neighborhood</strong> <strong>Cats</strong> <strong>TNR</strong> <strong>Handbook</strong><br />
3. FIV positive cats can lead relatively long lives<br />
<strong>Cats</strong> infected with FIV have commonly been known to live for many years and some<br />
never get sick. While their immune systems are compromised, proper care and nutrition<br />
can compensate to at least some degree. By contrast, FeLV positive cats have a much<br />
higher mortality rate. Most infections occur in kittens and most of them will die by the<br />
age of two to three years old. Still, while they are alive, they can often live symptom free<br />
until near the end if properly fed and sheltered.<br />
4. Euthanizing positive cats is ineffective colony management<br />
The theory often advanced is that positive feral cats need to be identified through<br />
testing so they can be removed from the colony and the remaining cats can be protected<br />
from the disease. In truth, removing the positive cat makes little difference. It’s most<br />
likely the other cats in the colony have already been exposed to the virus and will have<br />
become infected or not. Furthermore, no matter how many ferals are removed because of<br />
positive test results, FIV and FeLV will remain in the environment and be an ongoing<br />
threat. New cats passing through or entering the colony could carry it and even colony<br />
members who tested negative might be harboring the FeLV virus. It’s not well known,<br />
but the ELISA FeLV test is also not completely reliable when the result is negative. The<br />
FeLV virus could be hiding in the bone marrow of an infected cat and not show up in the<br />
blood.<br />
The primary cause of illness in ferals, including FIV and FeLV, has more to do with<br />
proper colony management than the presence of any virus. Colonies with lots of sick cats<br />
are invariably ones that receive poor or insufficient nutrition, have inadequate shelter<br />
from cold and rain, and are unneutered. These conditions lead to weakened immune<br />
systems and susceptibility to disease. Indeed, some holistic veterinarians believe it is<br />
almost impossible for a healthy adult cat to catch FeLV. The best way to prevent the<br />
spread of disease is not by testing and removing individual cats, but by improving the<br />
quality of food, making sure the cats have warm, dry shelter in winter and getting them<br />
altered.<br />
5. The life of a FIV/FeLV positive cat has value, too<br />
At <strong>Neighborhood</strong> <strong>Cats</strong>, we euthanize cats only if they are actively ill, suffering and<br />
terminal. If a feral cat was to test FIV or FeLV positive, but showed no signs of illness,<br />
we would return him to his colony. As a result, there’s no point in our doing the testing<br />
as a matter of routine. We only test if the cat is sick and the results are needed for<br />
diagnosis, treatment or determining if euthanasia is appropriate.<br />
There have been a few instances when we knowingly returned FIV or FeLV positive<br />
but asymptomatic cats back to their colonies. These colonies were neutered and well<br />
managed. We have yet to observe other cats falling ill as a consequence. <strong>Cats</strong> who are<br />
known to be positive do need to be closely observed for signs the terminal stage of the<br />
illness has taken hold. Loss of weight, persistent upper respiratory infections, drooling or<br />
difficulty eating indicates the cat should be re-trapped and examined by a veterinarian.<br />
If your veterinarian insists on testing, anyway<br />
Despite these factors weighing against the testing of ferals, your veterinarian may<br />
insist upon it and not give you any choice in the matter. Or the program providing<br />
spay/neuter funding may include testing in its protocol and is inflexible. If that’s the<br />
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