About the Authors
CSIRO Livestock Industries, Australian Animal Health Laboratory, Geelong, Australia
Queensland Centre for Emerging Infectious Diseases, Biosecurity Queensland, Coopers Plain, Australia
The authors have declared that no competing interests exist.
Conceived and designed the experiments: GAM MT DM VH GC HEF LFW. Performed the experiments: GAM CdJ JAB MT CS DM MY ST AJF VH JP RR IB GC. Analyzed the data: GAM JAB MT DM GC LFW. Contributed reagents/materials/analysis tools: GAM CdJ JAB CS MY. Wrote the paper: GAM MT DM GC LFW.