Objective in order to investigate the evolution of EHF epidemic regularity due to change of epidemic factor of EHF.
目的为了探明流行性出血热流行因素的变化，导致其流行规律演变。
Objective to get to know the epidemic feature and rule of epidemic hemorrhagic fever as well as its incidence and epidemic factor.
目的了解出血热流行特点与规律以及发病和流行的因素。
Our ability to be responsive to changes in the epidemic is a central factor if we are to succeed.
要想获得成功，加强我们应对流行病变化的能力是一主要因素。
Salt is "a hidden factor in the obesity epidemic, " said Graham MacGregor, a co-author of the study by researchers at St. George's University of London.
英国乔治大学的研究人员，此项研究报道的作者格雷安.麦克格雷戈说：“盐是导致肥胖病的一种隐藏诱因”。
Objective to understand rabies epidemic facture and factor and provide scientific evidence for making control measures.
目的了解许昌市狂犬病流行特征和影响因素，为制定防治策略提供依据。
In the second section, considering the permanent immunity factor, the SEIR epidemic model with infectious force in the latent period which makes the model more universal is investigated.
第二部分考虑了永久免疫力因素，研究了一类潜伏期具有传染力的SEIR模型，使模型更具有广泛性。
It's acting on the insistence of doctors who say heavy moms are gaining too much weight and the current recommendations do not factor in the country's obesity epidemic.
他们认为，肥胖的母亲可能会增加更多的体重，而现行的建议根本没有考虑肆虐全国的肥胖症。
To explore the epidemic situation and the correlation factor on Song, Yuan, Ming and Qing dynasty in Northern China area by using bibliography, epidemiology and statistics methods.
以华北地区宋元明清时期疫情史料为依托，采用文献学、流行病学和统计学方法，探讨华北地区宋元明清疫情的时空分布及相关因素。
To explore the epidemic situation and the correlation factor on Song, Yuan, Ming and Qing dynasty in Northern China area by using bibliography, epidemiology and statistics methods.
以华北地区宋元明清时期疫情史料为依托，采用文献学、流行病学和统计学方法，探讨华北地区宋元明清疫情的时空分布及相关因素。
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