流行病

The study was conducted in Cameroon and the Central African Republic by pediatricians, epidemiologists, bacteriologists and virologists, and coordinated by the Institut Pasteur through its International Network, particularly the institutes based at the Pasteur Center in Yaoundé and at the Institut Pasteur in Bangui.

这一研究由儿科医生，流行病学家，细菌学家，病毒学家指导在喀麦隆和中非共和国共同指导完成，并且由Pasteur协会通过互联网予以协调，特别是基于Pasteur中心指导的Yaoundé组织和班吉的协会组织。

Department of epidemiology,school of public health and tropical medicine,southern medical universityguangzhou 510515,china

作者单位：南方医科大学公共卫生与热带医学学院流行病学系，广州 510515

Department of Epidemiology, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou 510515, China

南方医科大学公共卫生与热带医学学院流行病学系，广州 510515

Methods Epidemiological study was conducted to a mumps outbreak in a primary school in Kunshan. A ReedFrost model was set up, then the cases of mumps were predicted and costeffectiveness and costbenefit were calculated.

方法对昆山市1所小学腮腺炎爆发疫情进行流行病学调查，按卫生经济学研究方法收集腮腺炎爆发的成本资料，建立ReedFrost模型，并预测其他班级经应急性预防接种的理论腮腺炎发病人数，推算应急性预防接种的成本-效果与成本-效益。

Figures about the prevalence of sexual dysfunctions are not reliable if they are based on the findings of

性功能障碍流行病资料如果是基於的发现，它们是不可靠的。

Scientists called epidemiologists study the spread of disease and search for ways to prevent it.

称为流行病学家的科学家研究疾病的传播，并寻找防止方法。

"This is a new and growing area of research conducted by epidemiologists and toxicologists around the world," McLaughlin said.

&这是一个新的和越来越多的研究领域所进行的流行病学和毒理学全世界，&麦克劳克林说。

We all learn best from our mistakes, and there is much that epidemiologists can do to increase the reliability and utility of their findings.

我们从错误中学到的更多，流行病学家需要做的是努力提高研究结果的可靠性和实用性。

No matter how the calculations are done, epidemiologists warn that the math will always be tricky.

不管这些数据是怎么出来的，流行病学专家警告说，数学永远是骗局。

Epidemiologists try to stop a disease from spreading. They also inform people on how to stay safe and healthy.

流行病学家试图阻止疾病的扩散，他们告诫群众如何保持安全和健康。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。