Author information:
(1)Nuffield Department of Medicine, University of Oxford, Oxford OX1 3SY, UK. 
dung.nguyen@ndm.ox.ac.uk.
(2)Wellcome Trust Major Overseas Programme, Oxford University Clinical Research 
Unit, Ho Chi Minh City 700000, Vietnam. cuongnv@oucru.org.
(3)Nuffield Department of Medicine, University of Oxford, Oxford OX1 3SY, UK. 
david.bonsall@ndm.ox.ac.uk.
(4)Wellcome Trust Major Overseas Programme, Oxford University Clinical Research 
Unit, Ho Chi Minh City 700000, Vietnam. tuent@oucru.org.
(5)Wellcome Trust Major Overseas Programme, Oxford University Clinical Research 
Unit, Ho Chi Minh City 700000, Vietnam. jcarrique-mas@oucru.org.
(6)Centre for Tropical Medicine and Global Health, Nuffield Department of 
Medicine, Oxford University, Oxford OX3 7FZ, UK. jcarrique-mas@oucru.org.
(7)Wellcome Trust Major Overseas Programme, Oxford University Clinical Research 
Unit, Ho Chi Minh City 700000, Vietnam. anhph@oucru.org.
(8)Fondation Mérieux, Centre International de Recherche en Infectiologie (CIRI), 
69365 Lyon CEDEX 07, France. juliet.bryant@fondation-merieux.org.
(9)Wellcome Trust Major Overseas Programme, Oxford University Clinical Research 
Unit, Ho Chi Minh City 700000, Vietnam. gthwaites@oucru.org.
(10)Centre for Tropical Medicine and Global Health, Nuffield Department of 
Medicine, Oxford University, Oxford OX3 7FZ, UK. gthwaites@oucru.org.
(11)Wellcome Trust Major Overseas Programme, Oxford University Clinical Research 
Unit, Ho Chi Minh City 700000, Vietnam. sbaker@oucru.org.
(12)Centre for Tropical Medicine and Global Health, Nuffield Department of 
Medicine, Oxford University, Oxford OX3 7FZ, UK. sbaker@oucru.org.
(13)The London School of Hygiene & Tropical Medicine, London WC1E 7HT, UK. 
sbaker@oucru.org.
(14)Centre for Immunity, Infection and Evolution, University of Edinburgh, 
Edinburgh EH9 3FL, UK. mark.woolhouse@ed.ac.uk.
(15)Nuffield Department of Medicine, University of Oxford, Oxford OX1 3SY, UK. 
peter.simmonds@ndm.ox.ac.uk.