Argentine ant workers with brood (IMAGE) Institute of Science and Technology Austria Caption Unlike humans, ants react immediately to pathogen contamination and not only to the later-developing symptoms of a disease. Nestmates efficiently groom off infectious particles from colony members. Credit Sina Metzler, Roland Ferrigato/ISTA Usage Restrictions - 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.