Mosquitos under a Microscope (IMAGE) Iowa State University Caption The ISU Medical Entomology Laboratory identifies thousands of mosquitoes every year collected in traps across Iowa. A recent study based on 15 years of mosquito surveillance data reveals insights about the transmission of West Nile virus in Iowa. Credit Iowa State University News Service 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.