Masoodi M, Hosseini K
Department of Internal Medicine, Nemazee Hospital, PO Box 71345-1414, Shiraz Medical Science University, Shiraz, Iran.
Ann Trop Med Parasitol. 2003 Jan;97(1):75-81. doi: 10.1179/136485913X13789813917706.
Myiasis--the feeding of fly larvae on living mammals--may have various presentations, depending on the tissues or organs involved. The respiratory and non-respiratory manifestations of human pharyngeal myiasis caused by Oestrus ovis larvae in 33 patients from the Fars province, in southern Iran, are described here. All but one of the 33 cases were male and all lived in rural areas, in close contact with sheep and goats. The myiasis only occurred in spring and summer (April-September). Symptoms always appeared abruptly, all of the cases sensing the presence of foreign bodies in their throats, a burning sensation and itching in the throat being followed by cough and then various other respiratory, nasal, aural, and eye manifestations. Fly larvae were observed directly in the throats of five patients, and recovered in throat washings from all 33 cases. All of the larvae were identified as those of the sheep bot fly (Oestrus ovis). Removal of the larvae, by irrigation of the throat with a large volume of normal saline, provided an effective and fast treatment. In Iran at least, myiasis caused by Oestrus ovis larvae should be considered an occupational disease among farmers who keep sheep and goats.
蝇蛆病——蝇幼虫寄生于活体哺乳动物体表或体内——可因受累组织或器官的不同而有多种表现形式。本文描述了伊朗南部法尔斯省33例由羊狂蝇幼虫引起的人咽部蝇蛆病的呼吸及非呼吸症状。33例患者中除1例为女性外，其余均为男性，所有患者均生活在农村，与绵羊和山羊密切接触。蝇蛆病仅发生于春夏季（4月至9月）。症状通常突然出现，所有患者均感咽部有异物，继之出现咽部烧灼感、瘙痒，随后出现咳嗽，以及其他各种呼吸、鼻腔、耳部和眼部症状。在5例患者的咽部直接观察到蝇幼虫，33例患者均通过咽灌洗回收了蝇幼虫。所有幼虫均鉴定为羊狂蝇幼虫。用大量生理盐水冲洗咽部以清除幼虫，是一种有效且快速的治疗方法。至少在伊朗，由羊狂蝇幼虫引起的蝇蛆病应被视为饲养绵羊和山羊的农民的一种职业病。
