Just like malaria, schistosomiasis is caused by a tiny parasite that's transmitted to humans via an animal host known as a vector. The vector, in this case though, is not a mosquito but a snail. Yeah, just try there. So, let's have a look. Yeah, that looks like one. So that snail could infect up to 100 people over a period of a couple of months. And that's the problem. It's the kind of scale of individuals and numbers which gives this disease such a roothold in these environments. It's quite incredible. Well, it's funny first, let we know we're all standing here in waders just wearing gloves, protecting ourselves from this rather benign looking snail while, behind us. Mums are collecting water to bathe their kids in. Everyone's gonna be drinking the water and washing its. That's quite right. The parasite has evolved to live half of its life in the snail and half in the people it infects. | |
如疟疾一样,血吸虫病是由微小的寄生虫引发的。它会经由一种叫带菌体的动物寄主,传播到人体之中。在此情况下,带菌体不是蚊子而是蜗牛。 试试捞那边 我们来看一看 这里有一只 这只蜗牛会在短短几个月中,传染100人之多。这就是问题所在。此地人群的分布广而密集,让这种疾病根植于环境中。 真不可思议 我们正站在这里,穿着防水靴,戴着手套,保护自己,不会被这个毫不起眼的蜗牛感染。但在身后,妈妈在打水给孩子们洗澡,所有人都会饮用湖水,都会在这里洗涮 -没错 这种寄生虫已逐渐进化,既可存活在蜗牛中,也可依赖它所感染的人体生存。 |
Just like malaria, schistosomiasis is caused by a tiny parasite that' s transmitted to humans via an animal host known as a vector. The vector, in this case though, is not a mosquito but a snail. Yeah, just try there. So, let' s have a look. Yeah, that looks like one. So that snail could infect up to 100 people over a period of a couple of months. And that' s the problem. It' s the kind of scale of individuals and numbers which gives this disease such a roothold in these environments. It' s quite incredible. Well, it' s funny first, let we know we' re all standing here in waders just wearing gloves, protecting ourselves from this rather benign looking snail while, behind us. Mums are collecting water to bathe their kids in. Everyone' s gonna be drinking the water and washing its. That' s quite right. The parasite has evolved to live half of its life in the snail and half in the people it infects. | |
ru nue ji yi yang, xue xi chong bing shi you wei xiao de ji sheng chong yin fa de. ta hui jing you yi zhong jiao dai jun ti de dong wu ji zhu, chuan bo dao ren ti zhi zhong. zai ci qing kuang xia, dai jun ti bu shi wen zi er shi wo niu. shi shi lao na bian wo men lai kan yi kan zhe li you yi zhi zhe zhi wo niu hui zai duan duan ji ge yue zhong, chuan ran 100 ren zhi duo. zhe jiu shi wen ti suo zai. ci di ren qun de fen bu guang er mi ji, rang zhe zhong ji bing gen zhi yu huan jing zhong. zhen bu ke si yi wo men zheng zhan zai zhe li, chuan zhe fang shui xue, dai zhuo shou tao, bao hu zi ji, bu hui bei zhe ge hao bu qi yan de wo niu gan ran. dan zai shen hou, ma ma zai da shui gei hai zi men xi zao, suo you ren dou hui yin yong hu shui, dou hui zai zhe li xi shuan mei cuo zhe zhong ji sheng chong yi zhu jian jin hua, ji ke cun huo zai wo niu zhong, ye ke yi lai ta suo gan ran de ren ti sheng cun. |
Just like malaria, schistosomiasis is caused by a tiny parasite that' s transmitted to humans via an animal host known as a vector. The vector, in this case though, is not a mosquito but a snail. Yeah, just try there. So, let' s have a look. Yeah, that looks like one. So that snail could infect up to 100 people over a period of a couple of months. And that' s the problem. It' s the kind of scale of individuals and numbers which gives this disease such a roothold in these environments. It' s quite incredible. Well, it' s funny first, let we know we' re all standing here in waders just wearing gloves, protecting ourselves from this rather benign looking snail while, behind us. Mums are collecting water to bathe their kids in. Everyone' s gonna be drinking the water and washing its. That' s quite right. The parasite has evolved to live half of its life in the snail and half in the people it infects. | |
rú nüè jí yí yàng, xuè xī chóng bìng shì yóu wēi xiǎo de jì shēng chóng yǐn fā de. tā huì jīng yóu yī zhǒng jiào dài jūn tǐ de dòng wù jì zhǔ, chuán bō dào rén tǐ zhī zhōng. zài cǐ qíng kuàng xià, dài jūn tǐ bú shì wén zi ér shì wō niú. shì shì lāo nà biān wǒ men lái kàn yī kàn zhè lǐ yǒu yì zhī zhè zhǐ wō niú huì zài duǎn duǎn jǐ gè yuè zhōng, chuán rǎn 100 rén zhī duō. zhè jiù shì wèn tí suǒ zài. cǐ dì rén qún de fēn bù guǎng ér mì jí, ràng zhè zhǒng jí bìng gēn zhí yú huán jìng zhōng. zhēn bù kě sī yì wǒ men zhèng zhàn zài zhè lǐ, chuān zhe fáng shuǐ xuē, dài zhuó shǒu tào, bǎo hù zì jǐ, bú huì bèi zhè gè háo bù qǐ yǎn de wō niú gǎn rǎn. dàn zài shēn hòu, mā mā zài dǎ shuǐ gěi hái zi men xǐ zǎo, suǒ yǒu rén dōu huì yǐn yòng hú shuǐ, dōu huì zài zhè lǐ xǐ shuàn méi cuò zhè zhǒng jì shēng chóng yǐ zhú jiàn jìn huà, jì kě cún huó zài wō niú zhōng, yě kě yī lài tā suǒ gǎn rǎn de rén tǐ shēng cún. |