Case of Tick-Borne Relapsing Fever in Mexico (image) PLOS Share Print E-Mail Caption This is a dorsal view of the 'soft tick' Carios kelleyi, formerly Ornithodoros kelleyi, or the 'bat tick.' Credit CDC/ William L. Nicholson, Ph.D. (Public Domain, 2012) Usage Restrictions CC-BY: Redistribution permitted with credit. Share Print E-Mail 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.