常有这种情况:一个人患胃溃疡药物无效,医生劝他动手术,并说只需10天即可步行回家。然而,手术后20天,病人仍躺在病床上,手术刀口感染。据统计,本国有5%的住院病人,患有入院时未曾有的感染。这些感染使病人住院时间成倍增加。自从50年代初期以来,医院内感染的发病率不断升高,据估计,每年因此而死亡50 000人,是本国死亡原因的第6位。曾在疾病控制中心领导研究的流行病学家Robert Haley指出:大多数医院都疲于应付感染,但工作没有做到点子 Often this situation: a person suffering from gastric ulcer drug invalid, the doctor advised him to surgery, and said only 10 days to walk home. However, 20 days after surgery, the patient is still lying on the bed with a surgical incision infection. According to statistics, 5% of inpatients in our country suffer from an infection that has never been seen on admission. These infections doubled hospital stays. Since the early 1950s, the incidence of nosocomial infections has been on an increasing trend, with an estimated 50,000 deaths each year, which is the 6th cause of death in the country. Robert Haley, an epidemiologist who led the study at the Centers for Disease Control and Prevention, said most hospitals are struggling to cope with the infection, but the work did not make the point