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Feline leukemia virus (FeLV) is a retrovirus that infects cats.FeLV can be transmitted from infected cats when the transfer of saliva or nasal secretions is involved. If not defeated by the animal's immune system, the virus weakens the cat's immune system, which can lead to diseases which can be lethal.
Blood tests are completed through microscopic and biochemical analysis. They are completed to confirm or discount suspected cases of feline leukemia or feline immunodeficiency virus. An immunofluorescent antibody (IFA) test is available for the detection of FeLV in the blood of infected cats. [16]
A vaccine-associated sarcoma (VAS) or feline injection-site sarcoma (FISS) is a type of malignant tumor found in cats (and, often, dogs and ferrets) which has been linked to certain vaccines. VAS has become a concern for veterinarians and cat owners alike and has resulted in changes in recommended vaccine protocols.
These cats will test negative for FeLV in antigen and PCR assays but will have developed antibodies to the virus. Focal/Atypical Infection (<5%): Less than 5% of cats develop a focal or atypical infection, where the virus may be present in specific tissues (like the mammary glands or bladder) but not in the blood or bone marrow. The presence of ...
Lymphoma is the most common malignancy diagnosed in cats. [22] Lymphoma in young cats occurs most frequently following infection with feline leukemia virus (FeLV) or to a lesser degree feline immunodeficiency virus (FIV). These cats tend to have involvement of lymph nodes, spine, or mediastinum.
Feline diseases are often opportunistic and tend to be more serious in cats that already have concurrent sicknesses. Some of these can be treated and the animal can have a complete recovery. Others, like viral diseases, are more difficult to treat and cannot be treated with antibiotics, which are not effective against viruses.