在温带地区的秋季和冬季期间，每年发生流感流行。
Influenza epidemics occur yearly during autumn and winter in temperate regions.
在发生流感的21公立小学，每周一天免做家庭作业，以奖励来上学的学生。
At Public School 21 in Flushing, there was a homework-free day to reward those students who showed up.
通常，受到携带了“隐蔽病毒”的肺丝虫侵袭的猪，并不因肺丝虫的侵袭立即发生流感。
As a rule the swine infested with the lungworms carrying the "masked virus" did not develop swine influenza immediately upon infestation with the lungworm.
这一组地图显示二零一一年一月至三月的十个星期，发生流感样爆发情况的学校地点和个案人数。
This set of Map Library maps displays the pattern of this second wave over a ten week period.
不过他们随即称，对于那些可能发生流感并发症的病人来说，接种疫苗的好处要远远超过这种危险。
However, the Canadian researchers behind the study are quick to warn that in patients at high risk of complications from the flu, the benefits of vaccination far outweigh the risk.
从既往的大流行事件和流感高发季节所观察到的患病率和死亡率来看，孕妇发生流感感染的危险特别高。
Pregnant women are considered at special risk for influenza infection based on morbidity and mortality from previous pandemic events and from intense influenza seasons.
目的了解于小学校发生流感样暴发的流行特征，分析所采取有效的防治措施，为控制暴发提供科学依据。
Objective To understand the epidemiological features of influenza outbreak in an elementary school and provide scientific evidence for monitoring and adopting effective control measures.
委员会是根据全球形势以及从正在发生流感的数个国家获得的情况报告作出这一评估的，我本人完全同意委员会提出的建议。
The Committee based its assessment on the global situation, as well as reports from several countries that are now experiencing influenza. I fully agree with the Committee's advice.
在周围环境不佳或有人群聚集的地方，易发生流感等传染性病毒的地方，随身携带该打火机，打火机所产生的臭氧、负离子。
In the poor surrounding environment or places with crowds, they are prone to have influenza and other infectious viruses. Carry this lighter and lighter can produce ozone and negative ions.
流感通常发生在冬季。
一些英国医生指出，新硬币投入使用后不久，就发生了英国最严重的流感浪潮之一。
Some British doctors have pointed out that one of Britain's worst waves of influenza happened soon after the new coins came into use.
90%以上的季节性流感死亡病例发生在老人中。
For seasonal influenza, around 90% of deaths occur in the elderly.
发生在流感病毒上的变化，可能源于某种快速变异，也可能是遗传物质缓慢漂移的最终结果。
Changes to influenza viruses can happen as a result of quick mutations or as the end result of a slower drift in genetic material.
我们必须在流感大流行实际发生前对其做好准备。
We must prepare for a flu pandemic before it actually happens.
工业化国家中与流感相关的多数死亡发生在65岁以上的人群中。
Most deaths associated with influenza in industrialized countries occur among people age 65 or older.
然而，在现实世界中，虽然H5N1与人类流感病毒发生融合的机会不少，但它没有变异成为接触传染性病毒。
Nevertheless, in the real world, H5N1 has not yet mutated into a more contagious form, despite having had plenty of chances to mix with human flu viruses.
自2003年中期以来，印度尼西亚的鸡群中发生禽流感暴发。
Since mid-2003, Indonesia has experienced outbreaks of avian influenza in its poultry population.
超过50个社区组织参与了最近举行的一个有关可能发生的全国性流感问题的论坛。
More than 50 community organizations took part in a recent forum that focused on a possible flu pandemic.
“现在流感的发生验证了我们一直以来的观点。”一名活动家称。
"What is happening now with the flu proves what we have always said," one activist said, asking that his name not be used for fear of reprisal.
在发生包括流感在内的各种感染之后，可形成该病。
It can develop following a variety of infections, including influenza.
北半球正在发生猪流感的第二波大流行。
The second wave of the swine flu pandemic is now under way in the northern hemisphere.
1918年西班牙发生大规模流感时曾经出现这种情况，导致世界上数百万人死亡。
That happened with the so-called Spanish flu of nineteen eighteen which killed millions worldwide.
猪流感是一种发生在猪身上的高度传染性急性呼吸道疾病，由A型流感病毒引起。
Swine influenza (swine flu) is an acute viral infection of the respiratory tract in pigs caused by type A influenza virus.
流感大流行发生的时间和严重程度难以确定，但是专家们预测大流行将会发生。
The timing and severity of a flu pandemic is uncertain, but experts predict a pandemic will occur.
感冒症状通常是逐渐发生，但流感开始得非常迅猛而且症状比感冒更严重。
While cold symptoms tend to occur gradually, flu symptoms start very suddenly and symptoms are more severe than cold symptoms.
我在该会议上直接了断地说，将发生人类流感大流行。
At that meeting I said that there will be a human influenza pandemic.
与甲型和乙型流感病例相比，丙型流感病例发生较少。
Type C influenza cases occur much less frequently than A and B.
与甲型和乙型流感病例相比，丙型流感病例发生较少。
Type C influenza cases occur much less frequently than A and B.
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