Louse- and flea-borne rickettsioses: biological and genomic analyses Joseph J. Gillespie, Nicole C. Ammerman, Magda Beier-Sexton, Bruno S. Sobral and Abdu F. Azad Vet. Res., 40 2 (2009) 12 Published online: 28 November 2008 DOI: 10.1051/vetres:2008050