周姜片虫并殖吸虫.ppt

布氏姜片吸虫Fasciolopsisbuski,livesinthesmallintestineIntestinalfluke(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Preventionandtreatment,Morphology:adult,寄生人体中最大的吸虫2075820mm,ventralsucker:,digestivesystem:,Ovary,Uterus,oralsucker,Morphology:adult,Morphology:egg,Size:1301408085mShape:Color:Shell:Content:,卵壳：薄,内容物：一个卵细胞和2040个卵黄细胞,卵盖:小而不明显,Lifecycle,Definitivehost：Reserviorhost:Intermediatehost:Siteofinhabitation：Transmitvector：,humanandpig,pig,segmentina(扁卷螺),smallintestine,aquaticplant,Briefsummaryoflifecycle,picture,Infectivestage：Routeofinfection：Eggsexcretedinfeces.,encystedmetacercaria,byingestingmetacercariaeontheaquaticplants,Briefsummaryoflifecycle,Pathogenicity,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：无明显临床症状；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,Laboratorydiagnosis,Epidemiology,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：,Preventionandtreatment,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Paragonimuswestermani,liveinlungofhostlungfluke(肺吸虫）paragonimiasis（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Preventionandtreatment,Livingadult,Morphology,Morphology：adult,Morphology:egg,Lifecycle,picture,Definitivehost：Intermediatehost:1st:2nd:Reserviorhost:Parasitizedsites：,human/carnivores（食肉动物）,melaniasnail(川卷螺),craborcrayfish,lung,carnivoressuchascat,tiger,wolf,fox,etc.,BriefsummaryoflifeCycle,Infectivestage:Infectiveroute:Lifespan:,metacercaria,eatingraworundercookedfreshwatercrabsandcrayfishwithmetacercaria,5-6years,Eggsarepassedinsputumorfeces,BriefsummaryoflifeCycle,致病机制机械性损伤；免疫病理反应危害部位：肺；异位寄生急性期:由童虫移行所致慢性期:可分为三期脓肿期囊肿期纤维瘢痕期,Pathogenicity,临床表现急性肺吸虫病慢性肺吸虫病,Pathogenicity,胸肺型:最常见皮下型：腹型：脑型,picture,picture,痰或粪便中检出虫卵活检,病原学检查:,免疫学诊断：,ID；ELISA；循环抗原检测,影像学检查：X线、CT等,Laboratorydiagnosis,流行区的分布流行环节,sourceofinfection：intermediatehost：eatinghabit：,Epidemiology,宣传教育：不生食溪蟹、蝲蛄等常用治疗药物：吡喹酮,Preventionandtreatment,斯氏狸殖吸虫Pagumogonimusskrjabini,人是本虫的非正常宿主主要为童虫寄生于皮下，引起狸殖吸虫病,Shape:Sucker:ovary,Difference:,Morphology：adult,ThelifecycleissimilartoP.westermani.Finalhost：Intermediatehost：1st:2nd：Humanisnotthesuitablehost,racoondog（狸）、cat