Thank you for the info, MC! Onyx's IFA test came up positive - do you know if 
cats who are positive on that test ever revert to negative? Also, some vets say 
that vaccinated cats always show up positive on later tests (because of the 
vax), but two of them said that vaccinated cats do not show up positive on the 
IFA test unless they actually have the virus. Can anyone clarify that for me?



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