During seasonal epidemics, more than 90% of deaths occur in the frail elderly.
季节性流感期间，90%以上的死亡病例发生在体弱老人中。
Many countries are reporting a mix of influenza viruses, again as is typically seen during seasonal epidemics.
许多国家报告出现流感病毒混合病例，又是通常发生在季节性流感流行期间。
Why are we so worried about this pandemic possibility when thousands die every year from seasonal epidemics?
每年季节性流行病都会造成数以千计的人死亡，为什么我们会如此担心这一疾病大流行的可能性？
In countries with a temperate climate, seasonal epidemics typically taper off in the spring and end before summer.
在气候温和的国家，季节性流感通常在春季减弱，在夏季来临前结束。
Current evidence points to some important differences between patterns of illness reported during the pandemic and those seen during seasonal epidemics of influenza.
现有证据说明流感大流行期间报告的疾病模式与季节性流感流行期间见到的模式有一些重要的差异。
In recent years, seasonal epidemics have a tremendous threat on public health and predicting epidemic tendency by web information as a new method has received increasing attentions.
近年来，传染病的传播与流行已经对公众健康造成了越来越大的威胁，因此，对传染病发病趋势的分析与预测研究越来越受到广泛的重视。
During epidemics of seasonal influenza, around 90% of deaths occur in the frail elderly, who often suffer from one or more chronic medical conditions.
在季节性流感流行期间，约90%的死亡发生在年老体弱者身上，他们常常患有一种或数种慢性病。
Third, up to now, the new virus has largely circulated in the Northern Hemisphere, where epidemics of seasonal influenza should be winding down.
第三，迄今为止，新的病毒主要是在北半球传播，这里，季节性流感的流行将会逐渐平息。
WHO also sought data on the clinical spectrum and patterns of the disease and how this compares with what is seen during epidemics of seasonal influenza.
世卫组织还征集了关于该病临床范围和规律以及与季节性流感流行期所见情况进行比较的数据。
Nevertheless, the epidemic is proving less contagious and lethal than other seasonal influenza epidemics in recent years, and does not appear likely to have a significant economic cost.
但是与最近几年的季节性流感相比，这次流感的传染性和死亡性相对较弱，因此不会造成太大的经济损失。
Presence of the virus has now been confirmed in several countries in the southern hemisphere, where epidemics of seasonal influenza will soon be picking up.
目前南半球已有几个国家确认发现了这种病毒，这几个国家的季节性流感很快会到来。
This pattern is significantly different from that seen during epidemics of seasonal influenza, when most deaths occur in frail elderly people.
这与季节性流感流行期间见到的规律显著不同。发生季节性流感时，死亡主要见于老年体弱者。
Analyses of infection rates in modern seasonal flu epidemics suggest that with age comes a subtle buildup of immunity to flu viruses in general.
近年来对季节性流感流行的感染率分析表明，一般而言，随着年龄的增长，针对流感病毒的免疫力也在日积月累地加强。
Pregnant women face an increased risk even during outbreaks of seasonal influenza. But the new H1N1 flu has been affecting a younger age group than seasonal flu epidemics.
即使在季节性流感爆发的时，孕妇面临的风险就已经增加了。但是，新出现的。
Pregnant women face an increased risk even during outbreaks of seasonal influenza. But the new H1N1 flu has been affecting a younger age group than seasonal flu epidemics.
即使在季节性流感爆发的时，孕妇面临的风险就已经增加了。但是，新出现的。
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