Echinostomiasis
棘口吸虫病
组员：梁彪、蔡万杰、李浩欣、李攀
演讲：梁彪
一、Morphology病原形态
Species (种类)
1. Echinostoma revolutum 卷棘口吸虫
2.E. paraulum 接睾棘口吸虫
3.Echinoparyphium recurvatum 去领棘缘吸虫
4.Hypoderaeum conoideum 似锥低颈吸虫
5.Patasiger nitidus 光洁锥棘吸虫
Echinostoma revolutum
• 棘口吸虫\Echinostoma_sp_Fluke.jpg
Host：chicken、duck、goose
Location：rectum(直肠)、cecum(盲肠)、small
intestine(小肠)
Length：8.0–9.5 mm
Width：1.2–2.1 mm
Color： pinkish red
Shape： leaflike(叶状), elongated (细长)
Morphology
二、Life cycle
二、Life cycle
• echinolc_副本.jpg
Eggs become
miracidium（毛蚴）,
producing a sporocyst
（胞蚴）. And Mother
rediae（母雷蚴）
emerge. Mother redia
asexually reproduce
daughter redia（子雷
蚴）, which also
multiply. Each rediae
then develop into a
cercariae（尾蚴），
which develops into
metacercaria（囊蚴） .
三.Epidemiology 流行病学
Distribution
The prevalence(流行) of Echinostomiasis is very broad, not only an
endemic infectious disease in United States countries, but also can be
imported by overseas travelers from the Asian or Europe .
Infection(感染)
Echinostomiasis is parasitic zoonoses.
The first human infection was reported
in Taiwan in 1929.
Be prevalent all over the country，especially
in southern China.
infection rate： Fuzhou 26.41%; Kunming 57.4%;
in Guangdong ：
Chicken：39.13%;
Duck：62%;
Goose：46.6%
Symptoms (症状)
no obvious symptoms while mild infection,
In severe infection, clinical manifestations（临床症
状） are fatigue（乏力）, poor appetite（食欲不
良）, diarrhea（腹泻）, mucus（粘液） in stool ，
anorexia（厌食 ）, edema（浮肿）, anemia（贫
血） , weight loss, stunted growth, or
even combined with other diseases.
2、The pathological changes in animal
experiments mainly catarrhal（卡他
性） inflammation（炎症） of the
intestinal mucosa（肠粘膜） and superficial（上
皮） loss, congestion（充血） and
inflammatory cell infiltration（浸润）, may
occur secondary to infection, concurrent with E.
coli(大肠杆菌).
五、Diagnosis(诊断)
Sedimentation method ( 沉淀法)
Treatment
1. Albendazole(丙硫咪唑) 15mg/kg .
2. Praziquintal（吡喹酮） 40 mg/kg,
single dose
3. Niclosamide（氯硝柳胺）5060mg/kg,oral.
4. Bithionol（硫双二氯酚），100-200
mg/kg, chicken, oral. 30mg/kg,duck,
goose oral