Results: More than 95% of nurses had knowledge of the transmission of blood-borne viruses (hepatitis B virus, HIV virus); 98.4% of nurses knew how to break an ampoule safely with gauze; 85.5% of nurses knew how to recap a needle safely with one-handed method; 95.6% of nurses knew sharp injury management process; 76.4% of nurses knew the best time for HBV / HIV prophylactic treatment.