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An outbreak of food-borne gastroenteritis due to sapovirus among junior high school students
Shuzo Usuku1, Makoto Kumazaki, Katsuhiko Kitamura
1Department of Testing and Research, Yokohama City Institute of Health, Kanagawa, Japan. sh00-usuku@city.yokohama.jp
Abstract:
The human sapovirus (SaV) causes acute gastroenteritis mainly in infants and young children. A food-borne outbreak of gastroenteritis associated with SaV occurred among junior high school students in Yokohama, Japan, during and after a study trip. The nucleotide sequences of the partial capsid gene derived from the students exhibited 98% homology to a SaV genogroup IV strain, Hu/Angelholm/SW278/2004/SE, which was isolated from an adult with gastroenteritis in Solna, Sweden. An identical nucleotide sequence was detected from a food handler at the hotel restaurant, suggesting that the causative agent of the outbreak was transmitted from the food handler. This is the first description of a food-borne outbreak associated with the SaV genogroup IV strain in Japan.
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