Case Report: Bacillus pumilus–Caused Bacteremia in a Patient with Food Poisoning

Mohammad Monir Shah Nagasaki University Institute of Tropical Medicine-Kenya Medical Research Institute Project, Nairobi, Kenya;
Center for Infectious Disease Research in Asia and Africa, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan;

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Gabriel Miringu Nagasaki University Institute of Tropical Medicine-Kenya Medical Research Institute Project, Nairobi, Kenya;

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Akihiro Wada Department of Bacteriology, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan;

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Satoshi Kaneko Center for Infectious Disease Research in Asia and Africa, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan;
Department of Eco-Epidemiology, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan

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Yoshio Ichinose Nagasaki University Institute of Tropical Medicine-Kenya Medical Research Institute Project, Nairobi, Kenya;
Center for Infectious Disease Research in Asia and Africa, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan;

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Bacillus pumilus has rarely been reported as a cause of human infections. We report a case of a B. pumilus causing food poisoning in an adult male. A 51-year-old Japanese man complained of severe abdominal cramps, fever with chills, diarrhea, dizziness, and loss of appetite after eating reheated rice with stewed minced meat purchased from a Kenyan restaurant. Bacillus pumilus was isolated from blood culture and was identified using a biochemical test and 16S rRNA gene sequencing analysis. The patient was treated with probiotics and ciprofloxacin and recovered after 3 days. To our knowledge, this is the first report describing the potential role of B. pumilus as a foodborne pathogen in Kenya and highlights the importance of good hygiene and food preparation practices.

Author Notes

Address correspondence to Mohammad Monir Shah, Centre for Infectious Disease Research in Asia and Africa, Institute of Tropical Medicine, Nagasaki University, 1-12-4 Sakamoto, Nagasaki 852-8523, Japan. E-mail: shah@nagasaki-u.ac.jp

Authors’ addresses: Mohammad Monir Shah and Yoshio Ichinose, Nagasaki University Institute of Tropical Medicine-Kenya Medical Research Institute Project, Nairobi, Kenya, and Center for Infectious Disease Research in Asia and Africa, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan, E-mails: shah@nagasaki-u.ac.jp and ichinose@nagasaki-u.ac.jp. Gabriel Miringu, Nagasaki University Institute of Tropical Medicine-Kenya Medical Research Institute Project, Nairobi, Kenya, E-mail: gbm900@yahoo.com. Akihiro Wada, Department of Bacteriology, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan, E-mail: a-wada@nagasaki-u.ac.jp. Satoshi Kaneko, Center for Infectious Disease Research in Asia and Africa, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan, and Department of Eco-Epidemiology, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan, E-mail: skaneko@nagasaki-u.ac.jp.

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