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  • Title: Use of plasmid profiling as a typing method for epidemiologically related Clostridium perfringens isolates from food poisoning cases and outbreaks.
    Author: Eisgruber H, Wiedmann M, Stolle A.
    Journal: Lett Appl Microbiol; 1995 May; 20(5):290-4. PubMed ID: 7766228.
    Abstract:
    Plasmid profiling was used for the characterization of Clostridium perfringens isolates involved in disease outbreaks. The usefulness of this technique was demonstrated by the retrospective examination of food and patient isolates from 10 cases and outbreaks from 1984 to 1991. The origin of three outbreaks could be clearly confirmed due to identical plasmid profiles in all isolates. In one outbreak identical plasmid patterns were found between one food and one patient isolates, while one plasmid was missing in the second patient isolate. In an additional two cases a relationship between food and patient isolates is likely, if the possibility of the loss of one plasmid in one of the isolated strains is considered. In one outbreak two faecal isolates could be related to an isolate from one of the two foods implicated as outbreak source; isolates from the other food and a third faecal sample could not be linked to any other isolate. The results from three outbreaks were largely inconclusive because plasmids were not present either in all or in some of the isolates.
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