Detection of Clostridium perfringens in tsunami deposits after the Great East Japan Earthquake
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Updated: Jan 25, 2026

Enrichment and Detection of Clostridium perfringens Toxinotypes in Retail Food Samples
Published on: October 18, 2019
Asuka Makino1, Jun Xu1, Junko Nishimura2,3
1Laboratory of Animal Microbiology, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan.
Abstract:
The Great East Japan Earthquake struck off the Tohoku and caused a tsunami in 2011. Most of the microbial characteristics of tsunami-affected soil remain unknown and no published study has shown how a tsunami affects the risk of infection by Clostridium perfringens living in soil. In 2011 and 2015, C. perfringens was assessed in deposits in soil from tsunami-damaged areas and undamaged areas of Miyagi. It was found that the number of C. perfringens was overwhelmingly greater in 2011 than in 2015 in the tsunami-damaged areas. According to real-time PCR, the prevalence C. perfringens organisms (%) was 103 fold greater in the damaged than in the undamaged areas.
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