About the Authors

H. Irene Hall

ixh1@cdc.gov

Affiliation Division of HIV/AIDS Prevention, National Center for HIV/AIDS, Viral Hepatitis, STD and TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America

Tian Tang

Affiliation ICF International, Atlanta, Georgia, United States of America

Andrew O. Westfall

Affiliation Center for AIDS Research, University of Alabama at Birmingham, Birmingham, Alabama, United States of America

Michael J. Mugavero

Affiliations Center for AIDS Research, University of Alabama at Birmingham, Birmingham, Alabama, United States of America, Division of Infectious Diseases, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, United States of America

Competing Interests

TT is an employee of ICF International, Atlanta, Georgia, who is under contract to the Centers for Disease Control and Prevention to provide scientific data analysis services. TT is a statistical data analyst and she analyzed the surveillance data for this paper. This does not alter the authors’ adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: MM HIH. Analyzed the data: TT AW. Contributed reagents/materials/analysis tools: HIH TT AW. Wrote the paper: HIH TT AW MM.