Objectives The aims of this study were to isolate and identify Acinetobacter baumannii from the nasal cavities of hospital personnel and to analyze its origin and route of transmission. Methods Cotton swabs were used to take nasal swabs from 10 hospital personnel and 10 college students,and 19 strains of non-repetitive A.Baumannii were isolated and identified.The susceptibility of the isolates to 13 commonly used antibiotics was determined using the Kirby-Bauer(K-B)method.Genes encoding OXA carbapenemases t...