Needlestick injuries during medical training.

Medical students are at risk of acquiring infections caused by needlestick injuries, although it is unknown when needlestick injuries are most likely to occur during medical training. The aim of this study was to define high-risk periods over the course of medical training. A cross-sectional study was conducted among medical students in the first, third, fourth and fifth years of training at two medical schools in Munich. Overall, 1317 (85%) students returned a questionnaire on demographic data, vaccination status against hepatitis B, lifetime prevalence of needlestick injuries, level of knowledge about measures after such accidents, and transmission risks. Lifetime prevalence of needlestick injuries was 23%, ranging from 12% in first year students to 41% in fourth year students. These accidents happened most commonly during medical internships, especially during blood-taking practices; an activity that usually starts during the third year of training. The frequency of respondents not vaccinated against hepatitis B also varied between first (21%) and fourth (6.6%) year students. Needlestick injuries occur frequently and early on in medical training. In order to decrease the risk of preventable infections, complete coverage of vaccination against hepatitis B should be achieved early in medical training.