1. Division of Microbiology, Tulane National Primate Research Center, Covington, Louisiana, USA
2. Wisconsin National Primate Research Center, Madison, Wisconsin, USA
3. Department of Pathology and Laboratory Medicine, University of Wisconsin—Madison, Madison, Wisconsin, USA
4. Tulane Cancer Center, New Orleans, Louisiana, USA
5. Department of Pathology, Tulane University School of Medicine, New Orleans, Louisiana, USA
6. Department of Pathobiological Sciences, University of Wisconsin—Madison, Madison, Wisconsin, USA
7. Department of Microbiology and Immunology, Tulane University School of Medicine, New Orleans, Louisiana, USA