Infection 1 (IMAGE) Rice University Caption Fruit flies marked with dots of paint in a Rice University lab were used to measure how an infection is spread in communities of different genotypes, with various sex ratios and either a male or female 'patient zero.' The study showed the degree to which social context matters in the spread of disease. 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.