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本文报告了１１年来流脑监测结果，表明流脑流行由Ａ群菌引起。流脑Ａ群多糖体菌苗普种可大幅度降低发病率，打破流行规律。流脑病后，带菌均可产生抗体，自然状态下流脑流行２～３年后逐渐下降，可能与此有关。预测九十年代流脑不可能出现明显的周期性流行高峰。
This article reports the results of 11-year meningitis surveillance, suggesting that the meningococcal epidemic is caused by group A bacteria. A group of polysaccharides mycobacteria meningitis can significantly reduce the incidence of common diseases, breaking the epidemic. After meningoencephalitis, the bacteria can produce antibodies, the natural state of meningitis prevalent 2 to 3 years after the gradual decline may be related to this. It is impossible to predict a significant cyclical peak in the meningitis in the 1990s.