Targeting Sleeping Sickness (IMAGE) Virginia Tech Caption Doctoral students Aaron Ramsey and Ana Lisa Valenciano, along with their mentor Zachary Mackey (center), study biological processes and gene targets in Trypanosoma brucei, the parasite that causes Human African trypanosomiasis, also known as sleeping sickness. Credit Virginia Tech 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.