1、 Fasciola hepatica肝片形吸虫Fasciolopsis buski布氏姜片吸虫布氏姜片吸虫Fasciolopsis buski俗称姜片虫，也称肠吸虫寄生于人体小肠内 致姜片虫病Contents:l 形态 Morphologyl 生活史 Life cyclel 致病 Pathogenicityl 诊断 Diagnosisl 流行 Epidemiologyl 防治 Prevention and treatmentLiving adult Dead adultMorphologyadult口吸盘腹吸盘子宫卵巢睾丸卵黄腺Morphologyegg:l 大小 :l 形状 : 椭圆形 l
2、卵壳 : 薄 (卵盖不明显 ) l 颜色 : 淡黄色 l 内容物 : 1个卵细胞和数十个卵黄细胞卵 盖MorphologyThe cercariae are released from the snail and encyst as metacercariae on aquatic plants(水生植物 ). The adult resides in the hosts small intestine.The eggs hatch, producing a free-swimming miracidium.Eggs are passed with the hosts feces into w
3、ater.The miracidium infects the intermediate host, a snail.The metacercaria is ingested by the definitive host and “excysts” in the small intestine.Life cyclel Transmit vector：Brief summary of life cycle人或猪水生植物小肠扁卷螺猪l Route of infection：囊蚴生食含囊蚴的水生植物Definitive host：Reservior host:Site of inhabitation:Intermediate host:Infective stage：Pathogenicity临床表现:轻度感染 : 无症状 严重感染 : 腹痛、腹泻、肠梗阻，对于儿童可出现侏儒症病原学诊断 :粪便中检获虫卵或成虫 .Laboratory Diagnosis粪便直接涂片法水洗沉淀法
