流行性感染(简称流感)是由流感病毒引起的急性呼吸道传染病,传播迅速,所有人群均对流感病毒易感。流感可以出现暴发、局部流行和世界性大流行[1]。决定流感流行程度的是病毒的抗原变异及人群的免疫状况,因此加强流感监测非常重要[2]。通过流感监测,能及时了解流感的流行趋势,对预测流感的大流行,制定防控措施具有重要意义。安庆市于2009年开始开展流感监测,现将2012年流感监测结果分析如下。 Epidemic infection (referred to as flu) is an acute respiratory infection caused by the influenza virus, spread rapidly, all people are susceptible to influenza virus. Flu outbreaks, pandemics and the world’s pandemic [1] can occur. Determining the extent of the flu pandemic is the antigenic variation of the virus and the immune status of the population, so it is important to enhance flu surveillance [2]. Through the flu surveillance, can keep abreast of the flu trends, the prediction of the flu pandemic, the development of prevention and control measures of great significance. Anqing started influenza surveillance in 2009 and now analyzes the 2012 influenza surveillance results as follows.