Restriction endonuclease analysis of Aujeszky's disease (pseudorabies) virus DNA: comparison of Northern Ireland isolates and isolates from other countries

• Published in: Archives of virology Vol. 86; no. 3-4; pp. 167 - 176
• Main Authors: TODD, D, MCFERRAN, J. B
• Format: Journal Article
• Language: English
• Published: Wien Springer 01-01-1985; New York, NY
• Subjects: Base Sequence; Biological and medical sciences; DNA Restriction Enzymes; DNA, Viral - analysis; Fundamental and applied biological sciences. Psychology; Genes, Viral; Herpesvirus 1, Suid - genetics; Microbiology; Morphology, structure, chemical composition, physicochemical properties; Northern Ireland; Virology; Northern Ireland; Virus; Aujeszky virus; Α-Herpesvirinae; Herpesviridae; DNA; Restriction endonuclease; Clinical isolate; Physical map
• ISSN: 0304-8608; 1432-8798
• DOI: 10.1007/BF01309822

Aujeszky's disease (AD; pseudorabies) viruses isolated in Northern Ireland over a 20 year period were compared with isolates from other parts of the world using restriction endonuclease analysis of virus DNA. When the numbers of Bam H1, Kpn 1 and Sal 1 restriction sites were considered, pathogenic Northern Ireland isolates resembled viruses isolated in England, Hungary and the U.S.A. and could be differentiated from viruses isolated in Denmark, Belgium and the Netherlands. The avirulent Northern Ireland isolate NIA4 and the Bartha vaccine strain were very similar to each other and could be distinguished from pathogenic isolates. While almost all the pathogenic viruses isolated in Northern Ireland from 1963 to 1983 appeared to possess the same number of restriction sites none of the viruses, even those made at the same farm during one outbreak of infection, were identical. The differences were confined to variation in the sizes of certain fragments which map in "variable" regions of the genome.