Stray cat: How long to watch for panleukopenia before introducing?
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I'm glad everything tested negative for Kitty. We do not have an test for panleukopenia. And we do not test healthy cats for it. Cats with panleukopenia are sick: vomiting, diarrhea, low white blood cells. We sometimes use the dog Parvo snap tests to test cats who are sick that we think may have it but we usually diagnose it based on signs and blood work (CBC=complete blood count).
I would keep her separate from your other cats for 2 weeks. I am assuming your vet started her vaccines and gave her the first FVRCP vaccine which has panleukopenia in it. She should have a second booster 3 weeks after the first one. If you want to be 100% safe, keep her separate until 2 weeks after the 2nd booster (5 weeks total, that is a long time!). But I would think that if she had no signs in 2 weeks she is likely fine.
I usually see stray cats or new kittens pass upper respiratory viruses more often than panleukemia.
I hope this helps!
Updated on September 23rd, 2025