BH>60% ratio???
yep, that is what he is doing looking to see if the records are 
correct with regard to research.
BH>It's serology, to show whether the bird HAS the antibody or does NOT 
(clean).
I'm aware of its procedure.
BH>It shows whether the bird has ever even been exposed. According to Jack 
ny
BH>pos. reaction should be checked out further. He suggests quarantining, 
hen
BH>retesting the serology after 2 or 3 mos. If pos still then dna swab under
BH>stress. Basicaly then consider as carrier. Altho' the current also seems 
to be
But , couldnt; it be a immunity as well?  The question is if it is a carrier
or just immuned.
BH>swabbing the nestbox on the premise that if the bird is shedding, that's 
where
BH>they'd shed....
I also get my air ducts in the house....
BH>TTYL,
BH>Barbara
BH>
BH>---
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