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通过对我院新旧病房大楼部分医疗用房定期进行空气微生物监测，及对同期儿科住院血液病、肿瘤患儿院内感染率调查表明，旧病房楼的医疗用房细菌含量远远超过ＷＨＯ提出的空气微生物含量标准，而新病房楼细菌含量大多低于或接近ＷＨＯ空气微生物含量标准，二者对比差异显著（Ｐ＜０．０１）。在旧病房楼时的血液病、肿瘤患儿感染率为７５％，搬入新病房后的感染率为５９％，比以前下降１７％，因此说明医院设施的改善是预防院内感染的重要环节。
Through regular monitoring of airborne microorganisms in some medical buildings in old and new ward buildings in our hospital and investigation of nosocomial infection rate in hospitalized pediatric patients in the same period, the bacterial content of medical buildings in old ward far exceeds the air proposed by WHO However, the bacteria content in the new ward was mostly lower than or close to the WHO airborne microbiological content (P <0.01). In the old ward building, the prevalence of the disease was 75% in children with cancer and 59% in those who moved to the new ward, a 17% decrease from the previous rate. Therefore, the improvement of hospital facilities is an important part of prevention of nosocomial infections.