Objective To enhance the ability to control the incidence rate and the omissive reporting rate of nosocomial infection in tumor hospital, and analyse the reasons.

了解肿瘤患者医院感染发病漏报，发生医院感染漏报的原因，以监控。

Objective:To find out the contamination status of HIV during routine exodontia and control the nosocomial infection.

对常规拔牙术中艾滋病病毒污染情况进行调查,进一步控制医源性感染。