Even so, the surviving records of North America do contain references to deadly epidemics among the indigenous population.
尽管如此，现存的北美记录确实提到了土著居民中发生的致命流行病。
In stands dominated by trees such as aspen, however, incipient gypsy moth outbreaks are quickly suppressed by viral epidemics.
然而，在以白杨等树为主的林分，最初的舞毒蛾爆发很快就被病毒流行病所抑制。
Virgin-soil epidemics are those in which the populations at risk have had no previous contact with the diseases that strike them and are therefore immunologically almost defenseless.
处女地流行病指的是那些风险人群以前没有接触过袭击他们的疾病，因此在免疫上几乎毫无防御能力的疾病。
But new issues kept intruding, like hurricanes and epidemics.
但是新的问题层出不穷，比如龙卷风和流行疾病。
Guidance tailored to different types of epidemics and health facilities.
适合不同类型流行和卫生设施的指南。
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。
Influenza epidemics occur yearly during autumn and winter in temperate regions.
在温带地区的秋季和冬季期间，每年发生流感流行。
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。
In some areas death rates have actually risen as a result of extreme poverty and epidemics.
在某些地区，由于极端贫困和流行病，死亡率实际上已经上升。
Historically the disease has caused devastating epidemics in Africa, America and Europe.
在历史上，该病已在非洲、美洲和欧洲引起具有破坏性的流行。
WHO regularly provides technical support at the field level to countries facing epidemics.
世卫组织向面临疾病流行的国家定期提供实地技术支持。
Intermediate yellow fever: In humid or semi-humid parts of Africa, small-scale epidemics occur.
中间型黄热病：在非洲潮湿或半潮湿地区，时而发生小规模流行病。
Attempts to foresee epidemics such as these have traditionally relied on fieldwork on the ground.
试图预知这样的流行病，传统上依赖于地面上的野外作业。
HIV is fuelling TB epidemics in many countries and multi-drug resistance is a growing threat.
在许多国家，艾滋病毒加快了结核病流行，同时多药耐药性也日益成为一大威胁。
Polio epidemics in 15 of the 21 re-infected countries have already been successfully stopped.
在21个重新出现感染的国家中的15个，已成功地制止了脊髓灰质炎的流行。
The debate turns on whether diseases like cancer can be characterized as emergencies, or “epidemics.
争议的焦点集中在像癌症之类的疾病是否可以划归急症或者“流行病”之列。
Meningitis epidemics in the African meningitis belt constitute an enormous public health burden.
非洲脑膜炎带发生的脑膜炎流行带来了十分巨大的公共卫生负担。
While noting such epidemics with concern, the Committee based its assessment on the global situation.
在关切地注意到这种流行情况的同时，委员会根据全球形势作出了评估。
The case fatality has varied widely between epidemics but, has been less than 10% in documented cases.
每次流行时的病死率存有很大不同，但有过记录的病例表明，病死率低于10%。
When major epidemics occur, WHO assists countries with implementing evidence-based emergency interventions.
在发生严重流行病时，世卫组织协助各国实施基于证据的突发事件干预措施。
The impact of disease epidemics has increased dramatically as the world becomes ever more interconnected.
随着世界变得愈加相互关联，疾病流行的影响也大幅度增强。
In developed countries, epidemics can result in high levels of worker absenteeism and productivity losses.
在发达国家，流感流行可使大量工人不能上班，并使生产能力下降。
WHO assists countries to improve preparedness, early recognition, and effective and timely response to epidemics.
世卫组织协助各国改进对流行病的防范、早期发现和有效及时的应对行动。
This is a key intervention in generalized epidemics with high HIV prevalence and low male circumcision rates.
在艾滋病毒传播率高、但男性包皮环切率低的普遍流行环境下，这是一项重要的干预措施。
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。
EV71 is a frequent cause of HFMD epidemics associated with neurological disease in a small proportion of cases.
EV71病毒通常引发手足口病流行，少数病例患有相关神经疾病。
EV71 is a frequent cause of HFMD epidemics associated with neurological disease in a small proportion of cases.
EV71病毒通常引发手足口病流行，少数病例患有相关神经疾病。
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