MucoRice-CBT vaccine trial (IMAGE) University of Tokyo Caption Researchers at the University of Tokyo have announced the successful results of the Phase 1 clinical trial of a new type of vaccine to protect against cholera and travelers' diarrhea. The cartoon shows a simplified summary of the MucoRice-CTB vaccine trial. Credit Image by Dr. Hiroshi Kiyono, CC BY 4.0. Usage Restrictions If you include the Creative Commons By Attribution image credit to Dr. Hiroshi Kiyono, you are free to use the image. 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.