About the Authors

Koichi Murakami

murakami@fihes.pref.fukuoka.jp

Affiliation Department of Health Science, Fukuoka Institute of Health and Environmental Sciences, Dazaifu, Fukuoka, Japan

Yoshiki Etoh

Affiliation Department of Health Science, Fukuoka Institute of Health and Environmental Sciences, Dazaifu, Fukuoka, Japan

Sachiko Ichihara

Affiliation Department of Health Science, Fukuoka Institute of Health and Environmental Sciences, Dazaifu, Fukuoka, Japan

Eriko Maeda

Affiliation Department of Health Science, Fukuoka Institute of Health and Environmental Sciences, Dazaifu, Fukuoka, Japan

Shigeyuki Takenaka

Affiliation Department of Health Science, Fukuoka Institute of Health and Environmental Sciences, Dazaifu, Fukuoka, Japan

Kazumi Horikawa

Affiliation Department of Health Science, Fukuoka Institute of Health and Environmental Sciences, Dazaifu, Fukuoka, Japan

Hiroshi Narimatsu

Affiliation Laboratory of Microbiology, Oita Prefectural Institute of Health and Environment, Oita, Oita, Japan

Kimiko Kawano

Affiliation Miyazaki Prefectural Institute for Public Health and Environment, Miyazaki, Miyazaki, Japan

Yoshiaki Kawamura

Affiliation Department of Microbiology, School of Pharmacy, Aichi Gakuin University, Chikusa-ku, Nagoya, Aichi, Japan

Kenitiro Ito

Affiliation National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: KM. Performed the experiments: KM YE SI EM ST. Analyzed the data: KM YE SI EM ST KH HN KK YK KI. Contributed reagents/materials/analysis tools: KM YE SI EM ST. Wrote the paper: KM ST HN KI.