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Colicine production as an epidemiological marker for Shigella sonnei
Published online by Cambridge University Press: 19 October 2009
Summary
The reliability of colicine typing of Shigella sonnei: as an epidemiological marker has been investigated. Strains from 13 of 110 excretors showed variation in type as determined by typing serial isolates and in 14 of 106 epidemics there was a lack of uniformity in typing results.
The simultaneous presence of two types was found in 11·4 % of patients. In vitro variation was seen after 10 days in 6·8 % of isolates from 44 stools; variation had risen to 9% when isolates were re-examined after one month.
These results suggest that restrictions should be placed on the use of colicine typing as an epidemiologic tool.
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- Copyright © Cambridge University Press 1983
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