At the clinical level, canine herpesvirus infection is most often the
cause in breeding kennels of a period of infertility or very precious
neonatal mortality which normally affects a single breed and disappear
s before the nest reproductive cycle. The difficulties encountered in
diagnosis, treatment, prevention and detection are linked to the poten
tial for latency and reactivation of all the herpesviruses, as well as
their poor immunogenic activity. These factors make a lot of breeders
accept with resignation that in the dog, as with numerous species, th
ey must learn to ''live with herpesvirus infection'' and that in dog b
reeding ''it is better to have the herpesvirus infection behind them t
han in front of them''.