Objective To get an insight into the mosquito density in Shunyi district, Beijing and the seasonal fluctuations to provide the basis for developing mosquito control programs.
目的了解和掌握北京市顺义区蚊虫密度及其季节消长规律，为制定蚊虫防制方案提供科学依据。
Objective To get an insight into the epidemic dynamics of infectious diseases, so as to provide a scientific basis for adopting appropriate measures to prevent and control the infectious diseases.
目的掌握安阳市传染病发病动态，为制定防治措施和策略提供依据。
Objective To get an insight into the epidemic dynamics of infectious diseases, so as to provide a scientific basis for adopting appropriate measures to prevent and control the infectious diseases.
目的掌握安阳市传染病发病动态，为制定防治措施和策略提供依据。
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