1. Australian Research Council Centre of Excellence in Structural and Functional Microbial Genomics, Department of Microbiology; Monash University; Clayton Vic 3800 Australia
2. Department of Microbiology and Molecular Genetics; University of Pittsburgh School of Medicine; Pittsburgh PA
3. California Animal Health and Food Safety Laboratory, San Bernardino Branch, School of Veterinary Medicine; University of California-Davis; San Bernardino CA
4. CSIRO Biosecurity Flagship, Australian Animal Health Laboratory; Geelong 3220 Australia