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什么是寄生虫?

寄生虫(parasite)指具有致病性的低等真核生物,可作为病原体,也可作为媒介传播疾病。寄生虫特征为在宿主或寄主(host)体内或附着于体外以获取维持其生存、发育或者繁殖所需的营养或者庇护的一切生物。

常见的寄生虫包括猪肉绦虫、蛔虫、肺吸虫等。

近年来,随着入境人员的逐年增多,合肥海关保健中心对来自非洲、东南亚等地区赴安徽留学、务工、工作的相关重点人员进行消化道寄生虫监测。

检测方法:

1、留取足够粪便样本;

2、实验室通过常规显微镜镜检;

3、免疫学诊断技术等进行寄生虫检测和诊断。

请跟随小编探究一下寄生虫卵的模样吧

钩虫

主要是十二指肠钩虫、美洲钩虫等的通称。钩虫幼虫简称钩蚴。钩虫主要是经皮肤感染,但感染期蚴也可经口使人感染并发育为成虫。钩虫病在世界上分布广泛,我国以海南省的感染率为最高。钩虫病的流行与自然环境、种植作物、生产方式及生活条件等诸多因素有密切关系

防治:包括驱虫治疗、粪便管理和个人防护等措施。

治疗:WHO推荐的常用药物为阿苯达唑和甲苯达唑。

布氏姜片吸虫俗称姜片虫

寄生在人体小肠内,可致姜片虫病。成虫主要寄生在猪或野猪小肠内,也可寄生于人小肠,是人畜(主要是猪)共患的寄生虫病。人体感染姜片虫的方式,主要在于生吃含囊蚴的水生植物,饮用含囊蚴的水可感染,如生吃荸荠、菱角等水生植物等。

预防:主要是注意饮食卫生,不生吃水生植物,不喝河塘生水。

治疗:目前以吡喹酮疗效最佳。

华支睾吸虫俗称肝吸虫

寄生于人体和多种哺乳动物的肝胆管内,引起华支睾吸虫病,又称肝吸虫病。当人等终宿主食入含有活囊蚴的鱼或者虾时,囊蚴在其消化道内,经胃蛋白酶和胰蛋白酶的作用,囊内的幼虫破囊而出,逆行从总胆管进入肝胆管发育为成虫。如粤港地区居民喜食“鱼生”或“鱼生粥”,皖苏地区居民吃“醉虾”,吃为烤熟的小鱼佐酒等习俗,均可能感染。肝吸虫病主要分布在亚洲,特别是东南亚国家。

治疗:以吡喹酮和阿苯达唑效果最为满意。

肠道原虫

蓝氏贾第鞭毛虫又称贾第虫

该原虫寄生于人的小肠,尤以十二指肠为多见,偶尔可寄生于胆囊等部位,可引起腹泻、腹痛、吸收不良以及胆道感染等症状。

在性病蔓延地区,贾第虫病也是一种性传播疾病。感染者如果机体免疫功能正常,可无任何临床症状而成为带虫者,或仅有轻度腹泻。如果是营养不良的婴幼儿、年老体弱及慢性病人,或是在免疫抑制和免疫缺陷情况下,往往出现以消化道功能紊乱为主的临床症状。

潜伏期约为2—3周,也可长达4周。贾第虫呈世界性分布,在发达和发展中国家均有流行,尤其多见于环境卫生条件差和医疗水平低下地区。

治疗:灭滴灵或阿苯达唑。

溶组织内阿米巴简称痢疾阿米巴

为阿米巴病的病原体,主要寄生于结肠,引起阿米巴痢疾。溶组织内阿米巴有滋养体和包囊两个阶段,随宿主粪便排出可污染食物或饮水,经口感染新宿主,在一定条件下,可侵入肝脏、肺脏和脑组织,引起阿米巴脓肿。

预防:加强粪便管理,保护水源。注意个人卫生,饭前便后洗手,消灭蝇和蟑螂,搞好环境卫生。

治疗:可用甲硝唑、甲硝咪唑、甲硝磺酰咪唑和巴龙霉素等。

保健中心检出成果

全年在入境人员中,共免费检测粪便样本例,25份样本查见寄生虫卵和包囊(检出鞭虫卵1例、钩虫卵12例、姜片虫卵3例、带绦虫卵2例、肝吸虫卵2例、蓝氏贾第鞭毛虫2例、混合感染3例)。

全年在入境人员中,共免费检测粪便样本例,12份样本查见寄生虫卵和包囊(检出鞭虫1例、钩虫卵1例、肝吸虫卵7例、蓝氏贾第鞭毛虫3例)。

全年在入境人员中,共免费检测粪便样本例,5份样本查见寄生虫卵和包囊(检出鞭虫2例、结肠内阿米巴包囊2例,华支睾吸虫卵1例)。

全年在入境人员中,共免费检测粪便样本例,9份样本查见寄生虫卵和包囊(检出华支睾吸虫卵8例、钩虫卵1例)。

荣誉奖项

为巩固提升全国医疗机构专业技术人员的寄生虫病防治理论水平与检测技能,提高寄生虫病防治能力,在年的全国寄生虫病防治技术竞赛中,保健中心检验部袁良慧代表海关总署参赛并拿到团体三等奖,这也是海关总署第一次组队参加全国卫生健康委员会组织的竞赛并获殊荣。

日常防护寄生虫疾病小贴士

消灭传染源能使人体患寄生虫病的传染源包括病人、带虫者和保虫宿主。

切断传播途径传播途径是指有感染性的寄生虫侵入人体的途径。

人体寄生虫病常见的传播途径有以下几个方面:①经口感染:被某些寄生虫的虫卵、幼虫污染的水源、食物,被人食入体内引起感染。②经皮肤感染:寄生虫经皮肤进入人体。③经蚊蝇等节肢动物感染。④经接触感染:如阴道毛滴虫可经过直接接触感染。⑤经胎盘感染:孕妇感染某些寄生虫,经过胎盘传给胎儿。

保护易感人群人类可以感染各种寄生虫。熟悉寄生虫病的传播途径,改变不良的饮食习惯和卫生习惯,提高自我保护意识可以有效地预防寄生虫病。

视频来源于网络

监制:宋誉

审校:王宏龙

编辑:保健中心孙倩倩储敏袁良慧石泉

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