9周姜片虫、并殖吸虫 课件

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,布氏姜片吸虫,Fasciolopsis buski,lives in the small intestine,Intestinal fluke(,肠吸虫,),Fasciolopsiasis,(,姜片虫病,),Contents ：,形态 Morphology ,生活史 Life cycle ,致病 Pathogenicity ,实验室诊断,Laboratory diagnosis,流行 Epidemiology,防治 Prevention and treatment,Morphology: adult,寄生人体中最大的吸虫,2075820mm,ventral sucker:,digestive system:,Ovary,Uterus,oral sucker,Morphology: adult,Testis,Morphology: egg,Size: 1301408085 m,Shape:,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,Life cycle ,Definitive host：,Reservior host:,Intermediate host:,Site of inhabitation：,Transmit vector：,human and pig,pig,segmentina,(扁卷螺),small intestine,aquatic plant,Brief summary of life cycle,picture,Infective stage：,Route of infection：,Eggs excreted in feces,.,encysted metacercaria,by ingesting,metacercariae on the aquatic plants,Brief summary of life cycle,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,Laboratory diagnosis,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：,Prevention and treatment,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,Paragonimus westermani,live in lung of host,lung fluke(肺吸虫,paragonimiasis 肺吸虫病),Contents ：,形态 Morphology ,生活史 life cycle ,致病 pathogenicity ,实验室诊断,Laboratory diagnosis,流行 epidemiology,防治 Prevention and treatment,Living adult,Morphology,pharynx,intestine,ventral sucker,ovary,uterus,Morphology：adult,oral sucker,testes,卵盖,卵细胞,卵黄细胞,Morphology: egg,Life cycle,picture,Definitive host,：,Intermediate host: 1,st,:,2,nd,:,Reservior,host:,Parasitized sites,：,human / carnivores食肉动物,melania snail,(川卷螺),crab or crayfish,lung,carnivores such as cat, tiger, wolf, fox, etc.,Brief summary of life Cycle,Infective stage:,Infective route:,Life span:,metacercaria,eating raw or undercooked freshwater crabs and crayfish with metacercaria,5-6 years,Eggs are passed in sputum or feces,Brief summary of life Cycle,致病机制,机械性损伤；免疫病理反响,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,Laboratory diagnosis,流行区的分布,流行环节,source of infection：,intermediate host：,eating habit：,Epidemiology,宣传教育：不生食溪蟹、蝲蛄等,常用治疗药物：,吡喹酮,Prevention and treatment,斯氏狸殖吸虫,Pagumogonimus skrjabini,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,The life cycle is similar to,P.,westermani,.,Final host,：,Intermediate host,：,1,st,:,2,nd,：,Human is not the suitable host,racoon dog狸、cat、dog,拟钉螺,crab,Life cycle,Larva,migrans,Pathogenicity,皮肤型,内脏型,活检,免疫学诊断,Laboratory diagnosis,脑肺吸虫病,毛蚴,尾蚴,囊蚴,幼虫脱囊,生活史中几个发育虫期,