About the Authors

Zhiyong Zhou

Affiliation Division of Global HIV/AIDS, Center for Global Health, Centers for Disease Control and Prevention (CDC), Atlanta, Georgia, United States of America

Nick Wagar

Affiliation Division of Global HIV/AIDS, Center for Global Health, Centers for Disease Control and Prevention (CDC), Atlanta, Georgia, United States of America

Joshua R. DeVos

Affiliation Division of Global HIV/AIDS, Center for Global Health, Centers for Disease Control and Prevention (CDC), Atlanta, Georgia, United States of America

Erin Rottinghaus

Affiliation Division of Global HIV/AIDS, Center for Global Health, Centers for Disease Control and Prevention (CDC), Atlanta, Georgia, United States of America

Karidia Diallo

Affiliation Division of Global HIV/AIDS, Center for Global Health, Centers for Disease Control and Prevention (CDC), Atlanta, Georgia, United States of America

Duc B. Nguyen

Affiliation Department of Health and Human Services/US CDC, Hanoi, Vietnam

Orji Bassey

Affiliation CDC/GAP, Abuja, Nigeria

Richard Ugbena

Affiliation CDC/GAP, Abuja, Nigeria

Nellie Wadonda-Kabondo

Affiliation Community Health Sciences Unit, Malawi Ministry of Health, Lilongwe, Malawi

Michelle S. McConnell

Affiliations Division of Global HIV/AIDS, Center for Global Health, Centers for Disease Control and Prevention (CDC), Atlanta, Georgia, United States of America, Thailand Ministry of Public Health/US CDC Collaboration, Nonthaburi, Thailand

Isaac Zulu

Affiliation Global AIDS Program CDC-Zambia, Lusaka, Zambia

Benson Chilima

Affiliation Community Health Sciences Unit, Malawi Ministry of Health, Lilongwe, Malawi

John Nkengasong

Affiliation Division of Global HIV/AIDS, Center for Global Health, Centers for Disease Control and Prevention (CDC), Atlanta, Georgia, United States of America

Chunfu Yang

cxy0@cdc.gov

Affiliation Division of Global HIV/AIDS, Center for Global Health, Centers for Disease Control and Prevention (CDC), Atlanta, Georgia, United States of America

Competing Interests

Chunfu Yang, Zhiyong Zhou, Joshua R. DeVos and Nick Wager are the inventors in U.S. patent application no.: 61/504,522. 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: CY JN ZZ. Performed the experiments: ZZ NW JRD ER. Analyzed the data: ZZ CY NW ER KD. Contributed reagents/materials/analysis tools: DBN OB RU NW-K MSM IZ BC JN. Wrote the paper: ZZ CY.