Who Infected Whom? (image) Santa Fe Institute Share Print E-Mail Caption Nodes corresponding to males and females are shown in blue and orange, respectively, and arrows indicate who infected whom. Credit Hebert-Dufresne et al. Usage Restrictions Credit authors Share Print E-Mail 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.