Why are pandemics such dreaded events?
大流行病为什么如此可怕？
Only influenza a viruses can cause pandemics.
只有A型流感病毒可造成大流行。
Those were considered to be mild pandemics.
而这两次仅被视为轻度大流行。
Improving global preparedness for future pandemics.
加强全球对未来大流行的防范能力。
How does she expect it to compare to other pandemics?
同以往的流感病毒大流行相比她是怎么看这次的呢？
This phenomenon is distinctly seen during pandemics.
这是大流行期间常见的显著现象。
Flu pandemics in the past have been lethal on a massive scale.
以往的流感大流行造成了规模极大的死亡。
Every hundred years there have been three or four pandemics.
过去每一百年内会发生三至四次的全球大型传染病疫潮。
As I said, pandemics are unpredictable and prone to deliver surprises.
如我所说，大流行是变幻莫测的，往往令人猝不及防。
During past pandemics, attack rates reached 25-35% of the total population.
在以往的大流行中，罹患率为总人口的25- 35%。
But every country has an immediate, obvious interest in avoiding pandemics.
但每个国家在避免传染病方面都有直接的、显而易见的利益。
In the pandemics of 1958 and 1968, a combined total of 3 million people died.
在1958年和1968年的大流行中，合计总共有300万人死亡。
The world is already suffering pandemics of AIDS, tuberculosis and malaria.
这个世界已经饱受艾滋病，肺结核和疟疾的威胁。
Although the threat of global pandemics is real, it's all too often exaggerated.
尽管全球性流行病的威胁是真实存在的，但它时常被渲染得言过其词，过于夸张了。
Previous pandemics have been characterized by waves of activity spread over months.
先前的传染病特点是活动蔓延的周期持续数月。
The severity of pandemics can change over time and differ by location or population.
大流行的严重程度可以随着时间的推移而发生变化，而且可能会因地点或人群而异。
A characteristic feature of pandemics is their rapid spread to all parts of the world.
疾病大流行的一个主要特征是会迅速传播到世界各地。
The results could be useful when discussing ways of dealing with epidemics and pandemics.
这一结果对于我们讨论如何解决流行病和广泛性流行病是非常有用的。
Obesity has not been recognized as a risk factor in either past pandemics or seasonal influenza.
过去发生的大流行或者季节性流感都没有将肥胖看作一种危险因素。
Pregnancy is already a well-documented risk factor in seasonal influenza and in previous pandemics.
在季节性流感和以前的一些大流行病当中，怀孕已经是一个尽人皆知的风险因素了。
In most previous pandemics, the new virus has totally replaced the previously circulating strains.
过去的几次流感大流行中，流行的新病毒株都完全替代了过去的旧病毒。
Flu viruses are especially prone to this and some pandemics have emerged because of this genetic mixing.
流感病毒尤其容易产生这种重组，一些流行病就是因为这种基因混合所产生的。
It remains one of the most destructive pandemics in history which peaked in Europe between 1348 and 1350.
它是史上破坏性最大的流行病之一，在1348到1350年之间的欧洲达到顶峰。
Evidence from previous pandemics further supports the conclusion that pregnant women are at heightened risk.
以往大流行的证据进一步支持这一结论，即孕妇面临更大的风险。
But once you factor in the cost of all these diseases and pandemics, cheap meat suddenly looks like an illusion.
但是，一旦你考虑到为所有的相关疾病和流行病付出的代价，廉价肉突然看上去像痴人说梦。
Past pandemics have always announced themselves with a sudden explosion of cases, taking the world by surprise.
过去流行性疾病爆发时，总会突然出现大范围病例，令世人震惊。
WHO regards severity as an important feature of pandemics and a critical factor when deciding on which actions to take.
世卫组织认为严重性是大流行的一项重要特征，也是在决定采取何种行动时应该考虑的一项极为重要的因素。
WHO regards severity as an important feature of pandemics and a critical factor when deciding on which actions to take.
世卫组织认为严重性是大流行的一项重要特征，也是在决定采取何种行动时应该考虑的一项极为重要的因素。
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