第九节链球菌感染一、A族链球菌感染A族链球菌（groupAstreptococcic，GAS）又称化脓性链球菌（streptococcuspyogenes），是一种常见的革兰阳性致病菌，GAS感染可以引起多种疾病，从急性咽炎、扁桃体炎到严重的侵袭性感染如坏死性筋膜炎和中毒性休克综合征，无菌性后遗症如风湿热、肾小球肾炎等。
O O O B-dis I-dis I-dis I-dis I-dis O O B-dis I-dis I-dis I-dis I-dis I-dis I-dis B-mic I-mic I-mic I-mic I-mic O B-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic O B-mic I-mic I-mic O O O B-mic I-mic I-mic I-mic I-mic I-mic O B-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic O O O O O O O O B-mic I-mic I-mic I-mic I-mic I-mic I-mic O B-dis I-dis I-dis I-dis I-dis O O O O O O O O O O B-dis I-dis I-dis I-dis O B-dis I-dis I-dis I-dis O B-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis O B-dis I-dis I-dis I-dis I-dis I-dis O B-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis O B-dis I-dis I-dis I-dis I-dis I-dis O B-dis I-dis I-dis O B-dis I-dis I-dis I-dis I-dis O O