Mosquitoes Anticipate Malaria Infection (IMAGE) University of Pennsylvania Caption Researchers found that mosquitoes ramp up their immune system after drinking blood in anticipation of parasite infections. Credit University of Pennsylvania Usage Restrictions In context of reporting 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.