OBJECTIVES: Self-medication and antibiotic abuse have led to the alarming phenomenon of antibiotic resistance, which is a current big problem all over the world. The aim of this study was to determine the influencing factors on knowledge, attitude and behaviour towards antibiotic usage among adults in Ho Chi Minh City (HCMC), Viet Nam. METHODS: A cross-sectional survey using questionnaire based on previous studies and focus-group interview with a random sample of adults in 19 districts of HCMC. The Chi - squared test, One-way ANOVA test and Pearson’s correlation were used to evaluate the influencing factors and the association between knowledge, attitude and behaviour with 95% interval confidence. RESULTS:

CONCLUSIONS: Monthly income and educational level significantly associated with knowledge, attitude and behaviour towards antibiotic usage. Some demographic groups have been indicated lacking of important knowledge and had poor attitude and behaviour. More antibiotic public campaigns and educational community initiatives should be conducted to improve people‘s antibiotics awareness especially these “high risk” groups.