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Journal of Clinical Microbiology, 05 1995, 1080-1083, Vol 33, No. 5
A De Zoysa, A Efstratiou, RC George, M Jahkola, J Vuopio-Varkila, S Deshevoi, G Tseneva and Y Rikushin
A selection of 100 Corynebacterium diphtheriae isolates from asymptomatic
carriers and clinical cases from five regions in northwestern Russia were
examined. Six additional isolates from patients in Finland and Estonia with
epidemiological links to Russia were also examined. All isolates were
characterized by biotyping, toxigenicity testing, ribotyping, and
pulsed-field gel electrophoresis (PFGE). Hybridization of genomic DNA
digested with BstEII revealed five ribotype patterns among the biotype
gravis isolates (G1 through G5) and two patterns among the biotype mitis
isolates (M1 and M2). PFGE using SfiI was not able to distinguish between
ribotypes G1, G2, and G4. The predominant ribotype pattern, G1, found in
cases of disease in all the areas studied, appears to be disseminating, in
view of the isolates received from imported cases in Finland and Estonia.
Among the 106 isolates examined, 68 produced pattern G1 and 24 produced
pattern M1. Most of the M1 isolates were from the Leningrad Oblast region.
Distinct ribotypes such as G2, G3, G4, G5, and M2 could represent endemic
disease.
Copyright © 1995 by the American Society for Microbiology. All rights reserved.
Molecular epidemiology of Corynebacterium diphtheriae from northwestern Russia and surrounding countries studied by using ribotyping and pulsed- field gel electrophoresis
Respiratory and Systemic Infection Laboratory, Central Public Health Laboratory, London, United Kingdom.
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