Jpn. J. Infect. Dis., 54, 111-113, 2001

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Short Communication

Molecular Analysis of Salmonella Enteritidis Isolates Resistance to Ampicillin and Streptomycin from Three Outbreaks of Food Poisoning in Shiga Prefecture

Wataru Matsune*CKazuhiko Ishikawa1CKen-ichi Hayashi1CMotohiro Tsuji1CHidemasa Izumiya2 and Haruo Watanabe2

Division of Environmental Health, Otsu Health and Welfare Center of Shiga Prefecture, Nionohama 4-4-5, Otsu, Shiga 520-0801, 1Division of Microbiology, Shiga Prefectural Institute of Public Health and Environmental Science, Gotenhama 13-45, Otsu, Shiga 520-0834 and 2Department of Bacteriology, National Institute of Infectious Diseases, Toyama 1-23-1, Shinjuku-ku, Tokyo 162-8640, Japan

(Received February 13, 2001. Accepted June 20, 2001)

SUMMARY: In 1998 and 1999, there were three outbreaks caused by Salmonella Enteritidis in Shiga Prefecture. One outbreak was suspected to be a diffuse outbreak, caused by frozen cream puffs that had been sold in chain stores throughout Shiga Prefecture between the beginning of September and the beginning of October, 1998. The other outbreaks occurred in May and in August, 1999. All isolates of the three outbreaks showed an identical lysis pattern against the typing phage, though this pattern did not conform to the current scheme, so-called RDNC. In addition all isolates were resistant to ampicillin and streptomycin. However, the patterns of pulsed-field gel electrophoresis strongly indicated that the three outbreaks were actually independent.


*Corresponding author: Tel: +81-77-522-6755, Fax: +81-77-525-6161


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