About the Authors

Elizabeth L Corbett

To whom correspondence should be addressed. E-mail: elc1@mweb.co.zw

Affiliations Department of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom , Biomedical Research and Training Institute, Harare, Zimbabwe

Ethel Dauya

Affiliation Biomedical Research and Training Institute, Harare, Zimbabwe

Ronnie Matambo

Affiliation Biomedical Research and Training Institute, Harare, Zimbabwe

Yin Bun Cheung

Affiliation Department of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom

Beauty Makamure

Affiliation Biomedical Research and Training Institute, Harare, Zimbabwe

Mary T Bassett

Affiliation Department of Community Medicine, University of Zimbabwe, Harare, Zimbabwe

Steven Chandiwana

Affiliations Biomedical Research and Training Institute, Harare, Zimbabwe , Faculty of Health Sciences, University of the Witwatersrand, Witwatersrand, South Africa

Shungu Munyati

Affiliation National Institute of Health Research, Harare, Zimbabwe

Peter R Mason

Affiliations Biomedical Research and Training Institute, Harare, Zimbabwe , Department of Medical and Laboratory Sciences, University of Zimbabwe, Harare, Zimbabwe

Anthony E Butterworth

Affiliations Department of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom , Biomedical Research and Training Institute, Harare, Zimbabwe

Peter Godfrey-Faussett

Affiliation Department of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom

Richard J Hayes

Affiliation Department of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

ELC, MTB, SC, PRM, AEB, PGF, and RJH conceived and wrote the initial study proposal. ELC, ED, RM, BM, and SM made substantial contributions to acquisition of data. ELC, YBC, and RH analysed the data. All authors provided input into the drafting and revision of the final manuscript.