冻干A群流脑多糖体菌苗注射79022人,未发生异常反应。全身和局部反应轻微。菌苗注射后1、3个月间接血凝抗体滴度分别较免疫前增长了8.31倍和5.32倍;免疫后1、3个月抗体4倍增长率分别为79.3％、58.6％。经现场观察,菌苗效果指数为1:7.8,保护率87.11％。证实A群流脑多糖体菌苗安全有效,值得推广使用。 A group of strept Apoptosis Cerebrospinal fluid vaccine injection of 79,022 people, no abnormal reaction. Systemic and local reactions slightly. The titers of indirect hemagglutination antibodies increased by 8.31 and 5.32 times compared with that before immunization at 1 and 3 months after inoculation. The 4-fold growth rates of antibodies at 1 and 3 months after immunization were 79.3% and 58.6%, respectively. The field observation, the vaccine efficacy index of 1: 7.8, the protection rate of 87.11%. Confirmed A group of cerebrospinal fluid polysaccharides vaccine safe and effective, it is worth promoting the use of.