ABSTRACT
Objective To understand the prevalence and risk factors of healthcare-associated infection(HAD,and provide evidence for prevention and control of HAI.Methods A cross-sectional survey was adopted,bedside survey and medical record reviewing method was combined to investigate and analyze the prevalence of HAI in a tertiary first-class hospital in 2012-2015.Results A total of 4 725 hospitalized patients were surveyed,the prevalence rates in 2012-2015 were 6.00％,4.77％,3.93％,and 3.05％ respectively,difference was significant(P＜0.05);antimicrobial usage rates were 30.56％,33.82％,32.84％,and 34.48％ respectively,difference was not significant (P＞0.05);the main infection site was lower respiratory tract (43.00 ％),followed by surgical site (16.43 ％);the risk factors for HAI were age ≥65 years,chronic systemic diseases(diabetes,cirrhosis,chronic renal failure,chronic lung disease),immunodeficiency(white blood cell＜1.5 × 109/L),coma,tracheotomy,and mechanical ventilation.Conclusion Survey on HAI prevalence can promote continuous improvement of HAI management,surveillance on surgical site infection and risk factors of HAI should be strengthened.