Hospital-acquired oral myiasis due to Boettcherisca septentrionalis (Diptera: Sarcophagidae) in Shimane Prefecture, Japan

A 74-year-old woman, who has been suffering from type II diabetes with insulin therapy, was found infested with around 5 mm-long maggots in her oral cavity in a general hospital in Shimane Prefecture, Japan. The maggots were identified as Boettcherisca septentrionalis Rohdendorf, 1937 from their morphological characteristics of the emerged adult fly. This is the first myiasis case caused by B. septentrionalis. She also had a past history of myocardial infarction and cerebral infarction. She underwent left femoral amputation due to left femoral artery embolism. The present case revealed that the patient had many predisposing factors for acquiring myiasis.