“流脑”是流行性脑脊髓膜炎的简称,其病原是脑膜炎奈瑟氏菌。此菌依其荚膜多糖的差别可分为13型,主要的流行菌为A,B,C,Y,W135型,90％的“流脑”是由A,B,C型引起的。我国今年的流行菌株为C型菌。此菌经呼吸道进人体内,突破血脑屏障进 “Myocarditis ” is short for meningococcal meningitis, the pathogen is Neisseria meningitidis. The bacteria can be divided into 13 types according to the difference of their capsular polysaccharides. The main epidemic strains are A, B, C, Y, and W135 types, and 90% of the “meridians” are caused by types A, B and C . China’s popular strain this year for the C-type bacteria. The bacteria enter the body through the respiratory tract, breaking the blood-brain barrier into