调查12,148名健康人,流脑带菌率为10.5％。对1,297株脑膜炎奈瑟菌进行分群鉴定,流行菌株为A群,带菌菌株以B群为主,认为A群带菌在流脑监测中有重要意义。 A total of 12,148 healthy people were surveyed, and the incidence of meningococcal infection was 10.5%. A total of 1,297 strains of Neisseria meningitidis were identified by cluster analysis. The epidemic strain was group A, and the group B was the dominant strain. It was considered that group A colonization was of great importance in the monitoring of meningitis.