About the Authors
Department of Zoology, University of Oxford, Oxford, United Kingdom
Department of Gastrointestinal Sciences, Christian Medical College, Vellore, India
Nuffield Department of Clinical Laboratory Sciences, University of Oxford, Oxford, United Kingdom
Centers for Disease Control, Atlanta, Georgia, United States of America
Angela B. Brueggemann has been an advisor to Wyeth Vaccines and GlaxoSmithKline Biologicals and has received grant funding from both companies; Derrick W. Crook has received grant funding from Wyeth Vaccines.
ABB performed the molecular work, analyzed the data, and wrote the manuscript. RP and BB were responsible for phenotypic characterisation of the strains and MLST genotyping. All authors contributed to the design of the study, discussed the results, and commented on the manuscript.