[Aujezky's disease in the field and vaccination against the disease (author's transl)].

A rather extensive outbreak of Aujeszky's disease in the area served by the above veterinarians is reported. Of 252 pig-breeding farms, eighty-two were contaminated. The other herds (170) were partly (81) vaccinated against the disease with the Bartha strain. Unlike de non-vaccinated group, the immunized herds showed few of any losses. In view of this fact it is concluded that Aujeszky's disease vaccination is a useful procedure (even in a contaminated environment).