Archive for March, 2005


Observation: When Dad is asleep, the only way I can wake him up is to whack him on the head with my truck.

Proof of: Newton’s first law of Physics - any object in a state of rest tends to remain in such a state unless acted upon by an external force.

Observation: When I snatch a toy from my brother, he snatches it back

Proof of: Newton’s third law of Physics - every action has an equal and opposite reaction

Observation: Whenever I (accidentally) throw something down the toilet, it’s easier for me to reach (and therefore touch) the water in the toilet

Proof of : Archimedes Principle: When an object floats in a liquid, then the weight of the object is equal to the weight of the volume of liquid it displaces.

Observation: When mum says “soon” it actually means in a very very long time

Proof of: Einstein’s theory of Relativity: Time is relative to the object that experiences it.

Feline Immunodeficiency Virus Vaccine

The vaccine is an inactivated feline immunodeficiency virus, with an adjuvant to elicit an immune response. Vaccinated cats will produce antibodies against this inactivated virus. The inactivated vaccine does NOT produce infection.

Current studies have found the vaccine to be about 82% effective in preventing infection of FIV (which I am told is reasonably good for a first round of studies).

Vaccine regimen

Initially 3 vaccinations 2-4 weeks apart followed by a booster vaccination annually to ensure optimal immunity.

Should I vaccinate my cat?

Since FIV is mainly transmitted from biting from fighting cats, any cat that goes outdoors and regularly gets into fights (with strange or stray cats) should be vaccinated. Prevention of infection though is also stressed. If you can keep your cat indoors and limit his/her exposure to cats, then the vaccine shouldn’t be necessary.

Generally in multiple cat households there is the occasional “argument’ between cats. These fights aren’t usually violent enough to cause the skin lacerations for the transmission of the virus.

Side effects of the vaccine

Pain at vaccination site

lethargy, inappetance, depression

These are usually transient and subside over 24-48 hours.

As with any introduced drug or chemical, anaphylaxis can occur and may require antihistamine or adrenaline therapy.

Locally, there may be thickening of the subcutaneous tissue and some pain.

Although there is limited information for the FIV vaccine, vaccines with an adjuvant have been known to cause vaccine site sarcomas. Though rare, any killed or inactivated vaccine with adjuvant may produce this tumour years down the track.

FIV vaccinated cats and FIV positive cats

It is worth noting the in-clinic tests available for detecting FIV positive cats uses the detection of antibodies against FIV rather than actual FIV isolation. Cats that have been vaccinated, will test positive for FIV antibodies as will cats with FIV infection. In many animal refuges, a stray cat testing positive for FIV is immediately euthanased. To overcome this problem it is recommended all cats vaccinated against FIV also be microchipped as a means of permanent identification. Cats who test positive for FIV antibodies should have samples sent to the laboratory for virus isolation.

What if my cat has FIV?

Cats with FIV do not always succumb to feline AIDS. It is important, though to ensure your cat stays away from other cats, preferably kept indoors. Regular health checks are necessary to pick up minor infections (especially oral lesions) and to assess the cat’s general well-being. Other cats in the household can be vaccinated (after testing negative) to prevent the spread of infection.

Ok..this was typed up really quickly so if something isn’t explained well enough or anyone has any questions please feel free to leave them in the comment section.

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