1. Department of Microbiology and Immunology, University of Louisville School of Medicine, Louisville, Kentucky, USA
2. Department of Medicine, University of Louisville School of Medicine, Louisville, Kentucky, USA
3. Center for Predictive Medicine for Biodefense and Emerging Infectious Diseases, University of Louisville School of Medicine, Louisville, Kentucky, USA
4. Department of Microbiology and Physiology, University of Massachusetts Medical School, Worcester, Massachusetts, USA
5. James Graham Brown Cancer Center, University of Louisville, Louisville, Kentucky, USA