Evaluation of the possibility of using genetic and microbiological research methods for resolving current problems in the epidemiology of salmonellosis
Rabsch, V.; Rozhnova, S.S.; Tschäpe, H.; Kilesso, V.A.; Tietze, E.
Zhurnal Mikrobiologii Epidemiologii i Immunobiologii 3: 48-53
1986
ISSN/ISBN: 0372-9311 PMID: 3518306 Document Number: 271872
S. typhimurium strains isolated in 14 regions of the USSR have, parallel with considerable similarity in their biological characteristics, a number of essential differences. These differences become manifest in the determination of the plasmid spectra of the above organisms. The transfer of R-plasmid PLE518 F1 me fin+ with a molecular weight of 96 Md to strains, sensitive to the action of typing bacteriophages, renders these strains resistant to the lytic action of a number of phages, which leads to the conversion of their phage type. In some cases it may deteriorate the validity of the method of phage typing, used for epidemiological purposes.