Randomised Controlled Study on Measures to Increase Vaccination Rates among German Armed Forces Soldiers.

Vaccination is one of the most effective medical measures for preventing infectious diseases. Even though there are recommendations for specific occupational groups that have an increased risk of infection, e.g., armed forces personnel, there are gaps in the vaccination rates of this personal. We conducted a randomised and controlled cohort study to examine whether a computerised reminder system would increase the vaccination rates of active soldiers over a period of twelve months. A total of 506 soldiers with a mean age of 27.7 +/- 6.5 years (experimental group (EG)) and 27.9 +/- 6.3 years (control group (CG)) were included in our study. Only 26.2% of the EG and 31.3% of the CG had received the required vaccinations at the beginning of our study. The vaccination rates for influenza (50.5% and 49.1%) and tick-borne encephalitis (57.1% and 60.7%) were particularly low, for measles, mumps, and rubella they were high (94.3% and 97.8%). A highly significant increase (p < 0.001) in vaccination rates was observed for both groups during our study. The results revealed considerable vaccination gaps among German armed forces soldiers. Despite a highly significant increase in vaccination rates during the study, there is still a clear need for action.