Many field collected Dermacentor andersoni adults are naturally co-infected with both pathogenic and non-pathogenic rickettsia in addition to the Francisella-like endosymbiont
Glen A. Scoles, scoles@vetmed.wsu.edu, USDA-ARS, Animal Disease Research Unit, 3003 ADBF, Washington State University, PO Box 646630, Pullman, WA