Food-borne botulism in Japan in March 2012.

In March 2012, two patients were transported urgently to the hospital in Tottori Prefecture, Japan, because of symptoms suggestive of botulism. Botulinum neurotoxin type A was detected in the clinical specimens and the food consumed by the two patients (vacuum packed adzuki-batto, a sweet adzuki bean soup containing noodles). We were able to make a prompt diagnosis of food botulism associated with the consumption of adzuki-batto, from which the causative pathogen Clostridium botulinum Ab was cultured.