Raven S, et al. - Using data for behavioural risk groups from the register of the national vaccination program, researchers summarized the activities for people who use drugs (PWUD) in a decentralised vaccination program in the Netherlands as well as examined the determinants related to completing a standard hepatitis B vaccination series. They found that vaccination completion among PWUD was relatively high in spite of using a standard hepatitis B virus (HBV) vaccination schedule and no financial incentives. Results of this study suggested that flexibility of vaccination location and administration of vaccines by healthcare workers with sustainable contact with PWUD could improve vaccination programs for this risk group.