Huge sacrifices have been made by small farmers in culling their poultry flocks.
小型农场主宰杀他们的鸡群，作出了极大的牺牲。
On present understanding, H5 and H7 viruses are introduced to poultry flocks in their low pathogenic form.
据目前所知，H5和H7型病毒以低致病形式传给禽类。
H5N1 is the name of a bird flu virus that's commonly found infecting poultry flocks in Southeast Asia, but one that has rarely infected humans.
H5N1是一种禽流感的名称，该病毒禽流感通常在东南亚的家禽感染中屡见不鲜，但很少感染人类。
Poultry flocks are worst affected, transmitting the virus easily in crowded conditions; however, the infection of wild birds is also an increasing concern.
家禽最容易感染该病，因为拥挤的环境使传播该病毒变得容易。但野鸟感染病例变得越来越多。
It spreads very rapidly through poultry flocks, causes disease affecting multiple internal organs, and has a mortality that can approach 100%, often within 48 hours.
它在禽类中传播非常迅速，感染多个内脏器官，通常在48小时内，死亡率可达到100%。
On a more sobering note, the report notes that avian flu is now endemic in the poultry flocks of many countries in the region and indeed has spread to Europe and central Asia.
报告以一种使人清醒的口气指出，禽流感目前在东亚很多国家的禽类中流行，并确实已传播到欧洲和中亚。
These behaviours tend to occur most frequently in rural areas where populations traditionally slaughter and consume birds once deaths or signs of illness are seen in poultry flocks.
这些行为往往最经常发生在农村，那里的人口在传统上一旦在禽群中发现死亡或疾病征兆就屠宰和食用禽鸟。
Culling of infected or potentially exposed poultry flocks is a standard control measure that has proved effective in halting past epidemics of avian influenza in several countries.
剔除感染的或有暴露可能的禽类是公认的一项有效的控制措施，通过它成功地阻断了以前几个国家发生的禽流感流行。
Considerable circumstantial evidence suggests that migratory birds can introduce low pathogenic H5 and H7 viruses to poultry flocks, which then mutate to the highly pathogenic form.
相当多的旁证表明侯鸟能够传播低致病性禽流感的H5和H7亚型病毒给家禽，然后，变异成高致病性类型。
Almost all cases have been linked to close contact to diseased household flocks, often during slaughtering, defeathering, butchering, and preparation of poultry for consumption.
几乎所有的病例均与密切接触患病家养禽群有关，通常发生在宰杀、拔毛、剁斩和准备食用的家禽期间。
In Nigeria, as in other parts of Africa, most village households maintain free-ranging flocks of poultry as a source of income and food.
在尼日利亚，如同在非洲其它地区一样，大多数农村家庭养殖自由放养的禽群，作为收入和食品的来源。
The main health risk currently is to people who are in close contact with infected poultry, such as families with backyard flocks and poultry workers in wet markets or live animal markets.
当前的主要健康风险涉及与受感染禽类密切接触者，例如在庭院放养禽类的家庭以及在菜市场或鲜活动物市场工作的养鸡业工人。
No cases have been linked to the consumption of properly cooked poultry meat or eggs, even in households where disease was known to be present in flocks.
没有发现病例与食用经适当烹煮的禽肉或蛋类有关，即便是已知在禽群中出现该病的家庭中也是如此。
The majority of poultry in Cambodia are raised in small backyard flocks in rural areas, making surveillance for outbreaks especially challenging.
柬埔寨大多数家禽是在农村地区后院小群饲养的，使监测暴发尤其具有挑战性。
The H5N1 avian flu virus is sweeping through flocks of poultry in Asia and sometimes Africa and Europe.
H5N1型禽流感病毒席卷了亚洲，非洲和欧洲成群的家禽。
The H5N1 avian flu virus has swept through flocks of poultry in Asia and sometimes in Africa and Europe.
H5N1禽流感病毒已在亚洲，或非洲、欧洲的家禽内散播。
The H5N1 avian flu virus has swept through flocks of poultry in Asia and sometimes in Africa and Europe.
H5N1禽流感病毒已在亚洲，或非洲、欧洲的家禽内散播。
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