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Prolonged Incubation Period of Salmonellosis in an Outbreak of Salmonella enteritidis Infection
Author(s) -
Nagai Kazushige,
Mori Toshihiko,
Tsuda Shinichiro,
Izumiya Hidemasa,
Terajima Jun,
Watanabe Haruo
Publication year - 1999
Publication title -
microbiology and immunology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.664
H-Index - 70
eISSN - 1348-0421
pISSN - 0385-5600
DOI - 10.1111/j.1348-0421.1999.tb02374.x
Subject(s) - pulsed field gel electrophoresis , salmonella enteritidis , outbreak , incubation period , biology , microbiology and biotechnology , salmonella , phage typing , incubation , typing , virology , veterinary medicine , bacteria , genotype , genetics , medicine , biochemistry , gene
An outbreak of Salmonella enteritidis infections occurred in Otaru, Japan, in September 1997. A total of 143 cases of salmonellosis were reported to the local Public Health Center. In this outbreak, one case had a 214‐hr incubation period. We investigated 5 isolates including this case by phage typing and pulsedfield gel electrophoresis (PFGE) to determine the genetic heterogeneity of S. enteritidis . Five isolates were phage typed as reacted, but did not conform (RDNC) with identical reaction patterns and had quite similar PFGE patterns. Thus, the prolonged incubation period may not be attributed to genetic heterogeneity of the organism but rather to other factors.