Superworms (IMAGE) Rutgers University Caption Superworms infected with a virus that's been responsible for mass die-offs of the popular pet food. Credit J. Penzes/Rutgers University Usage Restrictions None License Original 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.