Lassa Virus (IMAGE) La Jolla Institute for Immunology Caption Scanning electron micrograph of Lassa virus budding off a cell. Image captured and colorized at the NIAID Integrated Research Facility (IRF) in Fort Detrick Maryland. Credit NIAID Usage Restrictions Credit must be given to the creator. License CC BY 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.