Rvirus-film-hz (image) Johns Hopkins University Caption Unlike liquid formulas of rotavirus vaccine, the thin film would not need to be kept cool. This would reduce storage and distribution costs in developing nations. Credit Will Kirk/JHU Usage Restrictions None 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.