1. RE. Immunity.
Hi, Lorrie, I read with interest your post and wanted to weigh in on an
interesting circumstances that happened at our sanctuary some years ago
which made us determine that we had to test every cat and kitten in a
litter. We had a mother cat come in who was pregnant. She was NEGATIVE for
any virus (several tests) She had five kittens. Two of those kittens were
Positive FeLV and three were negative (from then on)
Since then we have had others tell us a similar story.  Something to do in
the breeding part I believe.  The post made me think of that mother cat and
her five kittens. Carmen


On 6/2/10, felvtalk-requ...@felineleukemia.org <
felvtalk-requ...@felineleukemia.org> wrote:
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>   1. Re: Immunity (jbero tds.net)
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> Message: 1
> Date: Tue, 1 Jun 2010 20:51:31 -0500
> From: "jbero tds.net" <jb...@tds.net>
> To: felvtalk@felineleukemia.org
> Subject: Re: [Felvtalk] Immunity
> Message-ID:
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> Interesting question.  I guess that answer would be, it depends.  If he was
> exposed to the virus, and he probably was given the close contact litter
> mates have,  it is possible he has developed an immunity.  To the best of
> my
> knowledge, vets do not currently measure antibody titers to felv - not sure
> why.  I could look into it. (the presence of certain titer of antibody
> infers immunity).
>
> It is possible he was never exposed to the virus, but given the history
> seems unlikely.
>
> Finally, is it possible for a cat to be exposed, beat the virus and on
> repeat exposure develop disease.  Anything is possible, but unless he
> becomes immunosuppressed it's not likely.
>
> I guess, I would consider it highly likely he has developed an immunity
> given his history, negative viral status and current age.  Of course a
> false
> negative is always possible, but also unlikely given repeat testing.
>
> Is there a reason you are asking this?  If you plan on introducing another
> felv cat it may be worth while simply vaccinating him anyway.
>
> Hope that helps.
>
> Jenny
>
> On Tue, Jun 1, 2010 at 6:35 AM, Lorrie <felineres...@kvinet.com> wrote:
>
> > In 2008 I rescued a litter of kittens.  All of them were positive
> > except one. He tested negative, and retesting has shown he is still
> > negative. Since he is negative and his immune system beat the virus
> > his litter mates (all gone now) had does this mean he is now immune
> > to FelV?
> >
> > Lorrie
> >
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