About the Authors

Philip C. Hill

To whom correspondence should be addressed. E-mail: pandmhill@hotmail.com

Affiliation Bacterial Diseases Programme, Medical Research Council (MRC) Laboratories, Banjul, The Gambia

Dolly J. Jackson-Sillah

Affiliation Bacterial Diseases Programme, Medical Research Council (MRC) Laboratories, Banjul, The Gambia

Annette Fox

Affiliation Bacterial Diseases Programme, Medical Research Council (MRC) Laboratories, Banjul, The Gambia

Roger H. Brookes

Affiliation Bacterial Diseases Programme, Medical Research Council (MRC) Laboratories, Banjul, The Gambia

Bouke C. de Jong

Affiliation Bacterial Diseases Programme, Medical Research Council (MRC) Laboratories, Banjul, The Gambia

Moses D. Lugos

Affiliation Bacterial Diseases Programme, Medical Research Council (MRC) Laboratories, Banjul, The Gambia

Ifedayo M. Adetifa

Affiliation Bacterial Diseases Programme, Medical Research Council (MRC) Laboratories, Banjul, The Gambia

Simon A. Donkor

Affiliation Bacterial Diseases Programme, Medical Research Council (MRC) Laboratories, Banjul, The Gambia

Alex M. Aiken

Affiliation Bacterial Diseases Programme, Medical Research Council (MRC) Laboratories, Banjul, The Gambia

Stephen R. Howie

Affiliation Bacterial Diseases Programme, Medical Research Council (MRC) Laboratories, Banjul, The Gambia

Tumani Corrah

Affiliation Bacterial Diseases Programme, Medical Research Council (MRC) Laboratories, Banjul, The Gambia

Keith P. McAdam

Affiliation Bacterial Diseases Programme, Medical Research Council (MRC) Laboratories, Banjul, The Gambia

Richard A. Adegbola

Affiliation Bacterial Diseases Programme, Medical Research Council (MRC) Laboratories, Banjul, The Gambia

Competing Interests

RHB has a patent relating to ex vivo ELISPOT licensed through Oxford University. There are no other conflicts of interest.

Author Contributions

Conceived and designed the experiments: PH AF RA KM TC RB SD. Performed the experiments: PH AF ML SH TC RB DJ IA AA BD. Analyzed the data: DJ PH AF ML SH RB SD IA AA BD. Wrote the paper: DJ PH RA KM. Other: Enrolled patients: PH. Wrote the first draft of the paper: PH.