About the Authors

Rebecca S. Levine

Affiliation Centers for Disease Control and Prevention, Poxvirus Program, Atlanta, Georgia, United States of America

A.Townsend Peterson

Affiliation Natural History Museum and Biodiversity Research Center, University of Kansas, Lawrence, Kansas, United States of America

Krista L. Yorita

Affiliation Centers for Disease Control and Prevention, Division of Viral and Rickettsial Diseases, Atlanta, Georgia, United States of America

Darin Carroll

Affiliation Centers for Disease Control and Prevention, Poxvirus Program, Atlanta, Georgia, United States of America

Inger K. Damon

Affiliation Centers for Disease Control and Prevention, Poxvirus Program, Atlanta, Georgia, United States of America

Mary G. Reynolds

To whom correspondence should be addressed. E-mail: nzr6@cdc.gov

Affiliation Centers for Disease Control and Prevention, Poxvirus Program, Atlanta, Georgia, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MR RL DC AP. Performed the experiments: RL KY. Analyzed the data: MR RL KY AP. Contributed reagents/materials/analysis tools: DC ID AP. Wrote the paper: MR RL DC ID AP.