Affiliation: | Departments of Pathology,1. Microbiology and Immunology,2. Center for Biodefense and Emerging Infectious Diseases,3. Sealy Center for Vaccine Development,4. Institute for Human Infections and Immunity, University of Texas Medical Branch, Galveston, Texas 77555,5. Rickettsial Zoonoses Branch, Centers for Disease Control and Prevention, Atlanta, Georgia 303336. |