in adult healthy cats, the stats are that 70% can be adequately exposed
until to test positive, and either never do so, or process the virus out of
their system. they also know that some percentage of that 30% who do remain
viremic, never become symptomatic, and are not contagious, even tho they
continue to test positive.

vets consistently forget, and we must consistently remind them, that the
SNAP (and IFA, actually) test not for antibodies/infection, but for
antigens/exposure--so a confirmatory test is literally vital.

sadly, there is just not enough research to say what the percentages are in
kittens--back in 2002, it was presumed that ALL kittens of positive moms
(many of whom probably weren't positive to start with) were be definition
positive themselves, and all were killed. when mom wasn't there to test, if
one kitten in a litter tested positive, or the litter's blood was mixed
(heaven forfend!) and was positive (again, remember, to ANTIGENS only), all
were most likely killed.

asymptomatic positive adults were most likely to be given a chance, while
kittens were far less lucky. hence no research pool.

in sanctuary settings, anecdotally it seemed that asymptomatic
kittens--especially of asymptomatic moms--who made it past six or seven
months of age (when mom's antibodies wore off? don't know, but kept
happening), and again past about 18-22 months (absolutely NO ideas on why
that's an important mark) would survive--these were UNretested cats,

kittens of sickly moms, or kittens who were themselves sickly -- not
necessarily REALLY sick, but just not as thrifty as others their
age/developmental stage--tended to do less well.

with retesting recognized as a necessity, with an IFA done at an interval
long enough to let the virus work itself out of kitty's system, the majority
of kittens tested negative. still do.

just no real data to 'prove' it.

paolo, have you seen this? **
Spay & Neuter Your Neighbors!
Maybe That'll Make The Difference....

Special-Needs Coordinator, Purebred Cat Breed Rescue (
Member, SCAT (Special-Cat Action Team)
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