About the Authors

Rosamund Chapman

Contributed equally to this work with: Rosamund Chapman, Enid Shephard

Affiliations Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa, Division of Medical Virology, Department of Clinical Laboratory Science, University of Cape Town, Cape Town, South Africa

Enid Shephard

Contributed equally to this work with: Rosamund Chapman, Enid Shephard

Affiliations Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa, Department of Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa, Medical Research Council, Cape Town, South Africa

Helen Stutz

Affiliations Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa, Division of Medical Virology, Department of Clinical Laboratory Science, University of Cape Town, Cape Town, South Africa

Nicola Douglass

Affiliations Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa, Division of Medical Virology, Department of Clinical Laboratory Science, University of Cape Town, Cape Town, South Africa

Vasan Sambandamurthy

Affiliation AstraZeneca Research and Development, Infection iMED, Bangalore, India

Irene Garcia

Affiliation Department of Pathology and Immunology, Centre Médical Universitaire, Hôpitaux Universitaires de Genève, University of Geneva, Geneva, Switzerland

Bernhard Ryffel

Affiliation University of Orleans and Centre National de la Recherche Scientifique, Unité Mixte de Recherche, Molecular Immunology and Embryology, Orleans, France

William Jacobs

Affiliation Howard Hughes Medical Institute, Albert Einstein College of Medicine, Bronx, New York, United States of America

Anna-Lise Williamson

Anna-Lise.Williamson@uct.ac.za

Affiliations Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa, Division of Medical Virology, Department of Clinical Laboratory Science, University of Cape Town, Cape Town, South Africa, National Health Laboratory Service, Cape Town, South Africa

Competing Interests

The authors have read the journal's policy and have the following conflicts: Dr. Sambandamurthy is an employee of AstraZeneca. This does not alter the authors' adherence to all the PLoS ONE policies on sharing data and materials, as detailed online in the guide for authors.

Author Contributions

Conceived and designed the experiments: RC ES HS ND VS IG BR WJ AW. Performed the experiments: RC HS ND VS IG. Analyzed the data: RC ES HS ND VS IG BR WJ AW. Contributed reagents/materials/analysis tools: RC ES HS ND VS IG BR WJ AW. Wrote the paper: RC ES.