Infection 2 (IMAGE) Rice University Caption This fruit fly is infected with a fungus, Metarhizium robertsii, that is fatal to many insects. Rice University scientists set up groups of flies and inserted an infected 'patient zero' to see how the spread of disease was influenced by sex ratios and group behavior. Credit Nick Keiser/Rice University 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.