About the Authors

G. Stevens

Gary.E.Stevens@aphis.usda.gov

Affiliation U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Veterinary Services, Lincoln, Nebraska, United States of America

B. McCluskey

Affiliation U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Veterinary Services, Fort Collins, Colorado, United States of America

A. King

Affiliation U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Veterinary Services, Jefferson City, Missouri, United States of America

E. O’Hearn

Affiliation U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Veterinary Services, Foreign Animal Disease Diagnostic Laboratory, Plum Island, New York, United States of America

G. Mayr

Affiliation U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Veterinary Services, Foreign Animal Disease Diagnostic Laboratory, Plum Island, New York, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: GS BMC AK. Performed the experiments: EO GM. Analyzed the data: GS BMC AK. Contributed reagents/materials/analysis tools: GS EO GM AK. Wrote the paper: GS BM GM AK.