Benin Vaccine Chain Simulation (image) Pittsburgh Supercomputing Center Caption In Benin's simulation, multiple red columns and lines show the supply chain's storage and transport bottlenecks, where capacity may be inadequate for vaccines to continue flowing to their intended destinations. Credit Shawn T. Brown, PhD, and Bruce Lee, MD, MPH Usage Restrictions Permission from Vaccine is required for use. 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.