Culex modestus (IMAGE) University of Helsinki Caption Culex modestus is known to spread West Nile virus, a flavivirus, in southern Europe, between birds and humans or birds and horses. Credit Lorna Culverwell Usage Restrictions Free to use, mentioning the credit 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.