根据抗原结构分类，链球菌分20个群，对人致病的90%属于

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24316' and id < 2098784 and id<>'2098784' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24316' and id > 2098784 and id<>'2098784' order by id asc limit 5