[A patient with botulism caused by Clostridium botulinum type B]

A case of botulism type B acquired in The Netherlands is presented. The diagnosis was made on clinical grounds and positive mouse bio-assay. The patient was a man aged 37 years. Additional evidence was obtained by electromyography, single fibre electromyography and autonomic function tests. Antitoxin was administered without side effects. The clinical outcome was good.