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目的：调查淮河水系沿岸村镇居民中有否尾蚴性皮炎流行。方法：对淮河水系沿岸部分村镇居民作现场查询和体检，以确定有无该皮炎表现及伴随症状；现场采集耳萝卜螺（Ｒａｄｉｘａｕ－ｒｉｃｕｌａｒｉａ）用直接压片法分离尾蚴，并用此尾蚴感染雏鸭；采集河岸渔场渔民养殖家鸭的粪便，分别用水洗沉淀法分离虫卵和用毛蚴孵化法分离毛蚴，并用此毛蚴感染实验室养殖的耳萝卜螺；解剖购于当地渔民放养的家鸭及人工实验感染的雏鸭分离成虫。结果：沿岸农户及渔民下到鸭活动的水体后可引起“鸭瘙”（ｄｕｃｋｉｔｃｈ），即在胸腹部及下肢等处皮肤可见弥漫性突出皮肤的红色丘疹，周围有红晕，并可见成片风疹团，患处刺痒或奇痒。从现场捕获的耳萝卜螺体内可分离到有眼点的叉尾蚴，经鉴定为毛毕属吸虫尾蚴。从渔民养殖家鸭的粪便内分离到菱形卵和新月形卵，且均可孵出毛蚴，用此毛蚴感染实验室内养殖的耳萝卜螺，可获与上述形态相同的有眼点的叉尾蚴。解剖上述两个不同来源的家鸭，均可获毛毕吸虫成虫。以上所获的虫卵、毛蚴、尾蚴和成虫经鉴定均为毛毕属吸虫某一生活期。结论：淮河水系有尾蚴性皮炎流行，其病原为毛毕属吸虫尾蚴。
Objective: To investigate whether there is any cercarial dermatitis in the towns and villages along the Huaihe River. Methods: Some residents of villages and towns along the coast of the Huaihe River were inquired and examined to determine the presence and absence of the dermatitis. Radixau-ricularia was collected on site and the cercariae were isolated by direct compression and infected with the cercaria ; Collecting the excrement of farmer’s duck in riverbank fishery, respectively separating the eggs by water washing sedimentation and isolating miracidia with the miracidia hatching method, and infecting the labradorheads cultured in the lab with the miracidium; dissecting the domestic duck stocked by the local fishermen and the artificial Experimental infected ducklings separated into adults. Results: Farmers and fishermen from the coast down to the water body of ducks can cause “duckitch” (duckitch), which can be seen in the chest, abdomen and lower extremities. Mission, the affected area itching or itching. Spotted cercarial euphorbiae can be isolated from the spot of the radish spirochetes captured and identified as a cercariae of the cercariae. Rhinoconical eggs and crescent-shaped eggs were isolated from the feces of farmer’s domestic ducks, and all of them were able to hatch miracidia. Infection with this miracidia in labradorpus cultured in the laboratory resulted in an eyelid with the same point as described above Cercariae. Anatomy of the above two different origins of the duck, can get Bibi adults. The eggs, miracidia, cercariae and adults obtained above were all identified as a living stage of the trematodes. Conclusion: There is a cercariae epidemic in the Huaihe River water system. The pathogen is Cercaria cercariae.