由于许多国家缺少诊断感染的适当方法或有能力监测疫情的监控系统，问题的真实规模尚不可知。
Since many countries lack appropriate methods of diagnosing the infection or surveillance systems capable of monitoring the situation, the real magnitude of the problem is unknown.
方法对丽江市传染病及麻疹疫情报告数据和监测系统数据采用描述流行病学调查方法进行分析。
Methods Uses the description epidemiology investigation method to the Lijiang infectious disease and measles epidemic reporting data and the observation system data to carry on the analysis.
方法建立主动和被动监测系统监测SARS疫情，对SARS病例进行现场流行病学问卷调查，分析其分布规律和特征。
Method Active and passive surveillance systems were used. Questionnaire surveys were conducted among SARS patients to study the characteristics of SARS epidemic.
方法根据2007年全国传染病疫情监测信息系统资料，描述当年急性血吸虫病分布特征，并分析其特点。
Methods According to the national infectious disease information monitor system, the epidemiological data of acute schistosomiasis in China were collected, checked and analyzed.
传染病的有效控制依赖于有效的反应系统，有效的反应系统依整于有效的疫情监测。
Effective control of infectious diseases relies on an effective response system. And the effective reactive of a response system relies on an effective diseases surveillance.
目的对佛山市学校症状监测信息系统的建立与运作情况进行分析评价，探讨在学校传染病疫情预防控制中发挥的作用。
Objective To evaluate the effect of a school syndromic monitoring information system in disease control and prevention in schools and child care centers in Foshan City.
目的对佛山市学校症状监测信息系统的建立与运作情况进行分析评价，探讨在学校传染病疫情预防控制中发挥的作用。
Objective To evaluate the effect of a school syndromic monitoring information system in disease control and prevention in schools and child care centers in Foshan City.
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