For an FIV-positive cat, vaccination for FeLV is generally not recommended or beneficial if they are already FeLV-positive, as it won't help an established infection; however, if an FIV-positive cat is still FeLV-negative but at risk (e.g., outdoor access), vaccination against FeLV might be considered by a vet, but the benefits and risks need careful weighing, favoring inactivated vaccines if available due to FIV's immunosuppressive nature. A crucial first step for any cat is to know their FeLV status through testing before any FeLV vaccination, as vaccinating an already infected cat is useless.
In addition, in a five-year field trial aimed to control FeLV infection by vaccination in a colony of 30 adult cats naturally exposed to FeLV, FeLV vaccination was effective in FIV-uninfected cats, but failed to protect FIV-infected cats against FeLV [50].
Feline Leukemia (FeLV) is much more devastating than FIV. This is because FeLV typically results in cancer, leukemia, and severe bone marrow suppression in young cats. The one commonality between FELV & FIV is that there is no cure for either. Cats with FeLV only live for a few years.
FeLV vaccination is considered a core vaccine for all cats less than one year of age and a non-core vaccine for cats one year of age and older that have no potential for exposure to FeLV-infected cats or cats of unknown FeLV status.
So it used to be believed that just Felv vaccines cause fibrosarcomas, however they since found that any vaccine, injection or even a foreign object can cause them. This is why they don't recommend unnecessary vaccines unless absolutely needed.
Adult indoor cats, particularly those without any contact with outdoor or unknown cats, may not need yearly FeLV vaccinations. Their risk of contracting FeLV is very low; hence, the vaccine for them falls into the non-core category based on their lifestyle and exposure risk.
At the very least, owners should be instructed in relation to the “3-2-1”-rule: incisional wedge biopsies or total removal and histological examination of any mass is warranted if the mass is still present three months after vaccination or if the mass becomes larger than two cm in diameter or if the mass is increasing ...
The Task Force lists the feline infectious peritonitis (FIP) vaccine as not generally recommended.
When should a cat or kitten be tested for FIV or FeLV? A shelter or community cat or kitten should only be tested if she is showing signs and symptoms of illness that may be related to a compromised immune system caused by FIV and FeLV. If cats are not ill, we do not recommend testing.
First and foremost, the feline leukemia vaccine works well to prevent feline leukemia virus infection in cats and protect cats from this dangerous condition. Although there is always a slight risk of a cat developing feline leukemia even after vaccination, this risk is low and is very uncommon for most pet cats.
While FIV is related to HIV in humans, there's no way that the cat virus can cross between species and infect people. FIV only affects cats, cannot be transmitted to non-felines.
Euthanasia is often discussed because FeLV can lead to significant suffering in its advanced stages. However, every case is different. Some cats live happily for years after diagnosis, while others decline quickly. The decision should focus on your cat's comfort and quality of life, not just the diagnosis itself.
Infected pet cats should live indoors so they don't infect other cats. Other cats in the same household should be tested for FeLV and FIV. In some cases, cats that live together may need to be separated to avoid the spread of infection.
Cats infected with FIV may live for months or years. On average, life expectancy is 5 years from the time of diagnosis depending on how active the infection is. There is a FIV vaccination given twice initially, then yearly thereafter for outside cats or cats exposed to outside cats due to the potential of cat bites.
FeLV stands for feline leukemia virus, and FIV is feline immunodeficiency virus. Although caused by distinct viruses, these diseases have similarities: both are contagious and incurable; both are more likely to be acquired by a cat that is allowed outside.
For a healthy cat diagnosed with FIV, the most important management goals are to reduce their risk of acquiring secondary infections and prevent the spread of FIV to other cats. Both of these goals are best met by keeping cats indoors and isolated from other cats.
However, there is no therapeutic value in administering FeLV vaccination to infected cats, and the vaccine would be unnecessary. Therefore, it is strongly recommended to test a patient prior to vaccination.
Experimental studies have shown that asymptomatic infected FIV-cats in early stages of infection develop a strong immune response following vaccination indicating that efficacy of vaccines is as good as would be expected in non-infected cats.
A cat with FeLV sheds a large quantity of the virus in its saliva, as well as in other bodily fluids such as nasal secretions, urine and feces. However, FeLV is not a highly contagious virus, and transmission generally requires a prolonged period of close contact between infected and susceptible cats.
3: Mass is known to persist for 3 months or longer. 2: Mass is, or becomes, larger than 2 cm in diameter. 1: Mass continues to increase in size 1 month following an injection. Perform routine thoracic radiographs in cats confirmed to have FISS.
New Cat? Set Realistic Expectations! You can expect that it will take your cat some time to get used to the new routines and environment. The 'Rule of Three' means that you can gauge the time it might take for your cat to fully acclimate to his home in threes: three days, three weeks, and three months.
Core vaccines are recommended for all cats, regardless of age or lifestyle. Vaccines for feline panleukopenia virus (FPV), feline herpesvirus-1 (FHV-1), feline calicivirus (FCV), feline leukemia virus (FeLV) for cats less than 1 year of age, and rabies are all considered core vaccines.
What Vaccines Do Cats Need?
As long as the kitten series has been completed, indoor adult cats are usually vaccinated every 3 years. Outdoor cats are vaccinated against feline leukemia annually.
The FVRCP vaccine is given to kittens with a 2-3 vaccine series and again at one year of age. After that, the FVRCP vaccine is boosters every three years. The Felv vaccine is administered to kittens 3-4 weeks apart and then yearly after that.