This leaves a gray zone of serologic testing for the core vaccines of canine distemper and canine parvovirus as well as canine adenovirus.
Of additional interest, a separate result indicated that Virkon S solution remained effective against canine parvovirus over a period of 14 days.
The use of high-titer canine parvovirus vaccines also appears to help offer the puppy some protection, even during the open window when the titers begin to drop in the puppy's bloodstream.
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