Illustration (IMAGE) West Virginia University Caption Some vaccines require more than a single shot. The hepatitis B vaccine is among them. According to a study led by Stacy Tressler--a graduate of the WVU School of Public Health--at-risk adults who received the hepatitis B vaccine in certain settings were more likely to complete the three-shot series. She and her colleagues found that local health departments' family planning clinics were associated with a higher rate of series completion. So were substance use treatment centers that partnered with local health departments. Credit Aira Burkhart/WVU illustration Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.