Roosting Straw-Colored Fruit Bats (IMAGE) Cary Institute of Ecosystem Studies Caption Of the world's 1,116 bat species, only a small percentage have been flagged as potential hosts of filoviruses. Knowing where these bats live can help guide targeted surveillance and virus discovery. Credit David Hayman Usage Restrictions Images may be used to promote this press release. 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.