1 Division of Microbiology and Risk Assessment, National Food Institute, Technical University of Denmark2 National Food Institute, Technical University of Denmark3 Sektion for Eksotiske Virussygdomme, Division of Virology, National Veterinary Institute, Technical University of Denmark4 Division of Virology, National Veterinary Institute, Technical University of Denmark5 National Veterinary Institute, Technical University of Denmark6 unknown
Field isolates of suid herpesvirus 1 (Aujeszky's disease virus) from Poland and Hungary were identified by restriction fragment pattern analysis as derivatives of attenuated vaccine strains. The Polish isolates were found to be related to the BUK-TK-900 strain (Suivac A) which is widely used as a live vaccine in Poland, and the Hungarian isolates were related to the Bartha K-61 vaccine strain widely used in Hungary. Pigs experimentally infected with derivatives of BUK-TK-900 or BUK-TK-900 itself were found to develop gI-antibodies, while pigs infected with derivatives of Bartha K-61 showed a gI-negative response.
Archives of Virology, 1992, Vol 124, Issue 3-4, p. 225-234