应用余弦模型对河南省菌苗接种后流脑季节性特征分析  

An Analysis on the Seasonal Features of EpidemicCerebrospinal Meningitis After the Inoculation ofGroup A Menigococcal Polysaccharid Vaccine byUsing Cosine Model in Henan Province

作　　者：刘飚 杨天英[1,2] 朱宝兰[1,2] 高志华 郭雪[1,2] 叶凤玲 李东明 李亚[1,2] 刘中华 曹殿忠 

机构地区：[1]河南省柘城县卫生防疫站 [2]河南省卫生防疫站

出　　处：《疾病监测》1998年第9期344-347,共4页Disease Surveillance

摘　　要：本文应用余弦模型对河南省流脑季节性特征进行了分析。结果表明，流脑菌苗接种后，流脑发病率已降至较低水平，流行期明显延长，为１～５月份，病例呈更趋分散状态。但季节性发病高峰无明显变化，仍在３月份，提示目前流脑菌苗接种应在１２月上旬以前完成。An analysis on the seasonal features of epidemic cerebrospinal meningitis during 1975-1995 by using cosine model was carried out in Henan province.The results showed that after the inoculation group A menigococcal polysaccharid vaccine,the incidence rate of this disease was decreased to a lower level,epidemic period was delayed to January-May,the patients were disperse in the whole county.There was no significant variation of seasonal peak,it was still in March.The authors suggested that it was neccssary to completed the inoculation group A menigococcal polysaccharid vaccine in the first ten days of December in every year.The significance of the Cosine model in the analysis of the difference in epidemic peak period was discussed.

关 键 词：余弦模型 流行性脑膜炎 菌苗 接种 

分 类 号：R515.201[医药卫生—内科学]