Retrospective serological analysis of spontaneous CDV infection in 192 dogs.
Spontaneous cases of canine distemper virus (CDV) infection were serologically evaluated. The 192 dogs in which CDV antigen was confirmed from tonsil by immunohistological examination were 2- to 4-months old, of various breeds, and unvaccinated. The prognoses were good in 74 dogs with significantly high levels of anti-CDV passive hemolytic aggregation (PHA) titer. In the other 118 dogs with poor prognoses, anti-CDV PHA titer was not detected. Anti-CDV PHA titer had the most significant association with the prognoses of CDV infection, and could be the most reliable and useful indicator for evaluating such prognoses.
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