2023年周姜片虫并殖吸虫（教学课件）.pptVIP免费

布氏姜片吸虫FasciolopsisbuskilivesinthesmallintestineIntestinalfluke(肠吸虫)Fasciolopsiasis(姜片虫病)Contents：形态Morphology﹡生活史Lifecycle﹡致病Pathogenicity﹡实验室诊断Laboratorydiagnosis流行Epidemiology防治PreventionandtreatmentMorphology:adult寄生人体中最大的吸虫20~75×8~20mmventralsucker:digestivesystem:OvaryUterusoralsuckerMorphology:adultTestisMorphology:egSize:130~140×80~85μmShape:Color:Shell:Content:卵壳：薄内容物：一个卵细胞和20~40个卵黄细胞卵盖:小而不明显LifecycleDefinitivehost：Reserviorhost:Intermediatehost:Siteofinhabitation：Transmitvector：humanandpigpigsegmentina(扁卷螺)smallintestineaquaticplantBriefsummaryoflifecyclepictureInfectivestage：Routeofinfection：Eggsexcretedinfeces.encystedmetacercariabyingestingmetacercariaeontheaquaticplantsBriefsummaryoflifecyclePathogenicity﹡致病机制吸盘吸附肠壁→肠粘膜损伤；虫体吸附在肠壁，摄取养料及覆盖肠粘膜而影响消化、吸收功能；虫体毒素；临床表现轻度感染：无明显临床病症；中度感染：消化功能紊乱、营养不良等；重度感染：消瘦、贫血、腹水、发育障碍等。Pathogenicity﹡病原学诊断粪检查虫卵直接涂片法：浓集法：粪便或呕吐物中查成虫LaboratorydiagEpidemiolog主要分布在亚洲的温带和亚热带地区。传染源：病人、带虫者、保虫宿主传播途径：生食水生植物的不良习惯易感人群：Preventionandtrea查治传染源：吡喹酮切断传播途径：加强粪便管理；保护易感人群：开展健康教育卫氏并殖吸虫Paragonimuswestermeinlungofhostngfluke(肺吸虫〕ragonimiasis〔肺吸虫病)Contents：形态Morphology﹡生活史lifecycle﹡致病pathogenicity﹡实验室诊断Laboratorydiagnosis流行epidemiology防治PreventionandtreatmentLivingadultMorphology﹡pharynxintestineventralsuckerovaryuterusMorphology：adultoralsuckertestes卵盖卵细胞卵黄细胞Morphology:eggLifecycle﹡pictureDefinitivehost：Intermediatehost:1st:2nd:Reserviorhost:Parasitizedsites：human/carnivores〔食肉动物〕melaniasnail(川卷螺)craborcrayfishlungcarnivoressuchascat,tiger,wolf,fox,etc.BriefsummaryoflifeCycleInfectivestage:Infe...