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VOA慢速英语2012 Agriculture Report - When Animals Make People Sick

时间:2012-07-12 05:58:02

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Agriculture Report - When Animals Make People Sick

This is the VOA Special English Agriculture Report.

Researchers estimate that more than two billion people a year get diseases spread by animals. More than two million of them die.

Delia Grace is a veterinary epidemiologist -- an expert in the spread of diseases involving animals. She is also a food safety expert. She works at the International Livestock1 Research Institute in Nairobi, Kenya. She explains that diseases transmitted between animals and people are called zoonoses.

DELIA GRACE: "A majority of human diseases are actually zoonotic. More than sixty percent of human diseases are transmitted from other vertebrate animals. Some of these diseases are pretty common. Some of the food-borne diseases and also diseases such as tuberculosis2, leptospirosis are not uncommon3. Others are quite rare."

Delia Grace says there are many different infection pathways for a person. Probably the most common one is for people to get sick from food. Other transmission pathways include direct contact with animals. And some diseases can be transmitted through water or through the air.

DELIA GRACE: "Diseases like avian influenza4 or mad cow disease have actually killed very few people. But they are of interest because some of them have the potential to kill a lot of people -- diseases like the Spanish flu after the First World War or HIV/AIDS, both of which were originally zoonoses."

Health workers killed 17,000 chickens at a poultry5 market in Hong Kong in December after officials said a dead chicken tested positive for the deadly H5N1 avian influenza virus 

Delia Grace is the lead author of a new report called "Mapping of Poverty and Likely Zoonoses Hotspots." She points out that poverty and disease are closely linked, so preventing the transmission of animal diseases could help reduce poverty.

The report, for Britain's Department for International Development, lists places where the diseases are most common. The report lists places where a disease has existed for a long time, a so-called endemic zoonosis, as well as places with new threats.

DELIA GRACE: "So in terms of the hotspots of the zoonosis which are there all the time -- not the new zoonosis, but what we call the endemic zoonosis -- we identified three countries which bear the greatest burden of these diseases. And those are India, Ethiopia and Nigeria. But in terms of the new diseases -- the diseases which haven't been there, but are emerging -- the hotspots are very different. They appear to be western United States and western Europe."

Delia Grace says things could get worse in the coming years as meat production increases to feed a growing world population. High production farms often raise animals close together. Crowding can allow diseases to spread quickly. Another concern is the use of antibiotics6 in food animals, not only to prevent and treat diseases but to increase growth.

The report says an "incentive-based" system to encourage safer methods of raising animals could be more effective than increasing food inspections7. For example, small farmers could receive training and other help that would lead to official certification that their products are safe.

And that's the VOA Special English Agriculture Report. I'm Jim Tedder8.

___

Contributing: Joe De Capua


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点击收听单词发音收听单词发音  

1 livestock c0Wx1     
n.家畜,牲畜
参考例句:
  • Both men and livestock are flourishing.人畜两旺。
  • The heavy rains and flooding killed scores of livestock.暴雨和大水淹死了许多牲口。
2 tuberculosis bprym     
n.结核病,肺结核
参考例句:
  • People used to go to special health spring to recover from tuberculosis.人们常去温泉疗养胜地治疗肺结核。
  • Tuberculosis is a curable disease.肺结核是一种可治愈的病。
3 uncommon AlPwO     
adj.罕见的,非凡的,不平常的
参考例句:
  • Such attitudes were not at all uncommon thirty years ago.这些看法在30年前很常见。
  • Phil has uncommon intelligence.菲尔智力超群。
4 influenza J4NyD     
n.流行性感冒,流感
参考例句:
  • They took steps to prevent the spread of influenza.他们采取措施
  • Influenza is an infectious disease.流感是一种传染病。
5 poultry GPQxh     
n.家禽,禽肉
参考例句:
  • There is not much poultry in the shops. 商店里禽肉不太多。
  • What do you feed the poultry on? 你们用什么饲料喂养家禽?
6 antibiotics LzgzQT     
n.(用作复数)抗生素;(用作单数)抗生物质的研究;抗生素,抗菌素( antibiotic的名词复数 )
参考例句:
  • the discovery of antibiotics in the 20th century 20世纪抗生素的发现
  • The doctor gave me a prescription for antibiotics. 医生给我开了抗生素。
7 inspections c445f9a2296d8835cd7d4a2da50fc5ca     
n.检查( inspection的名词复数 );检验;视察;检阅
参考例句:
  • Regular inspections are carried out at the prison. 经常有人来视察这座监狱。
  • Government inspections ensure a high degree of uniformity in the standard of service. 政府检查确保了在服务标准方面的高度一致。 来自《简明英汉词典》
8 tedder 2833afc4f8252d8dc9f8cd73b24db55d     
n.(干草)翻晒者,翻晒机
参考例句:
  • Jim Tedder has more. 吉姆?特德将给我们做更多的介绍。 来自互联网
  • Jim Tedder tells us more. 吉姆?泰德给我们带来更详细的报道。 来自互联网

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