资料来自美国医院感染监测系统（NNIS）所属的、有三级高危婴儿室（HRNS）的99家医院，采用NNIS拟定的医院感染标准评测，对所有病人从进HRNS到出HRNS后48小时进行监测。1986年10月～1994年9月有13179例次新生儿医院感染，血液感染（BSI）是最常见的感染。经实验室证明：88％BS The data were from 99 hospitals of the United States Hospital Infection Surveillance System (NNIS) belonging to the three-grade high-risk nursery (HRNS). The NNIS-designed nosocomial infection criteria were used to monitor all patients from the time they entered the HRNS to the HRNS. . From October 1986 to September 1994 there were 13,179 cases of neonatal nosocomial infection. Blood infection (BSI) was the most common infection. Laboratory confirmed: 88% BS