IPD Isolates from Children <5 years between 2001 and 2009.

a = Surveillance period which included only DSH. b = Speriod which included DSH and 6 other hospitals. c = Surveillance period which included DSH and 3 other hospitals. d = Cases with these isolates were excluded from the analysis. e = Missing indicates isolate was not retrievable from the isolate archive. f = Non-typable indicates that the isolates were not among the known serotypes.a：监测周期仅涵盖DSH。 b：监测周期包含DSH及另外6家医院。 c：监测周期包含DSH及另外3家医院。 d：携带此类分离株的病例已被排除在本次分析之外。 e：标注为缺失的条目表示无法从分离株档案库中调取对应分离株。 f：不可分型表示此类分离株未被归类至已知血清型范畴内。