SEPARATION OF SALMONELLA-TYPHIMURIUM DT2 AND DT135 - MOLECULAR CHARACTERIZATION OF ISOLATES OF AVIAN ORIGIN

Citation
Dl. Baggesen et al., SEPARATION OF SALMONELLA-TYPHIMURIUM DT2 AND DT135 - MOLECULAR CHARACTERIZATION OF ISOLATES OF AVIAN ORIGIN, European journal of epidemiology, 13(3), 1997, pp. 347-352
Citations number
21
Categorie Soggetti
Public, Environmental & Occupation Heath
ISSN journal
03932990
Volume
13
Issue
3
Year of publication
1997
Pages
347 - 352
Database
ISI
SICI code
0393-2990(1997)13:3<347:SOSDAD>2.0.ZU;2-O
Abstract
In Denmark, 0.4 and 3.4% of the human Salmonella Typhimurium cases reg istered between 1988 and 1993 were caused by DT2 and DT135, respective ly. Separation of these two phage types was, however, problematic as o nly minor differences in lysis pattern and lysis strength occurred. Mo lecular characterization of 23 Danish isolates, 10 German isolates and the two type strains have subsequently been performed. With only mino r exceptions, strains examined could be separated by combination of 0: 5 agglutination, ribotyping, and PFGE typing into two major groups in conformity with their phage types. The differences between the two gro ups were, however, very small and it has not been completely clarified whether this grouping is the result of two independent types or of tw o related lines developing in different environments. It is concluded that the classification of related phage types DT2 and DT135 has to be supported by molecular methods.