The infection rates of in-patients who were infants or old patients (>60years), and suffered from cancer, chronic nephropathy and hepatopathy, diabetes, leukemia were higher.

• 婴幼儿及老年人(＞60岁)、患有恶性肿瘤、慢性肾病、慢性肝病、糖尿病、白血病患者医院感染现患率较高。