About the Authors

Susanne H. Sheehy

susanne.sheehy@ndm.ox.ac.uk

Affiliations Centre for Clinical Vaccinology and Tropical Medicine, University of Oxford, Oxford, United Kingdom, The Jenner Institute Laboratories, University of Oxford, Oxford, United Kingdom

Alexandra J. Spencer

Affiliation The Jenner Institute Laboratories, University of Oxford, Oxford, United Kingdom

Alexander D. Douglas

Affiliation The Jenner Institute Laboratories, University of Oxford, Oxford, United Kingdom

B. Kim Lee Sim

Affiliation Sanaria Inc., Rockville, Maryland, United States of America

Rhea J. Longley

Affiliation The Jenner Institute Laboratories, University of Oxford, Oxford, United Kingdom

Nick J. Edwards

Affiliation The Jenner Institute Laboratories, University of Oxford, Oxford, United Kingdom

Ian D. Poulton

Affiliation Centre for Clinical Vaccinology and Tropical Medicine, University of Oxford, Oxford, United Kingdom

Domtila Kimani

Affiliation Centre for Geographical Medical Research (Coast), Kenya Medical Research Institute, Kilifi, Kenya

Andrew R. Williams

Affiliation The Jenner Institute Laboratories, University of Oxford, Oxford, United Kingdom

Nicholas A. Anagnostou

Affiliation Centre for Clinical Vaccinology and Tropical Medicine, University of Oxford, Oxford, United Kingdom

Rachel Roberts

Affiliation Centre for Clinical Vaccinology and Tropical Medicine, University of Oxford, Oxford, United Kingdom

Simon Kerridge

Affiliation Centre for Clinical Vaccinology and Tropical Medicine, University of Oxford, Oxford, United Kingdom

Merryn Voysey

Affiliation Centre for Statistics in Medicine, University of Oxford, Oxford, United Kingdom

Eric R. James

Affiliation Sanaria Inc., Rockville, Maryland, United States of America

Peter F. Billingsley

Affiliation Sanaria Inc., Rockville, Maryland, United States of America

Anusha Gunasekera

Affiliation Sanaria Inc., Rockville, Maryland, United States of America

Alison M. Lawrie

Affiliation Centre for Clinical Vaccinology and Tropical Medicine, University of Oxford, Oxford, United Kingdom

Stephen L. Hoffman

Affiliation Sanaria Inc., Rockville, Maryland, United States of America

Adrian V. S. Hill

Affiliation The Jenner Institute Laboratories, University of Oxford, Oxford, United Kingdom

Competing Interests

BKLS, ERJ, PFB, AG, and SLH are employees of Sanaria Inc., which manufactures PfSPZ Challenge. Sanaria also manufactures other products in development based on aseptic, purified, cryopreserved PfSPZ, including PfSPZ Vaccine and PfSPZ-CVac. Sanaria sells parasites and mosquitoes to the research community, but none of its major products in development have been commercialized. BKLS and SLH are inventors on patents relevant to PfSPZ Challenge. None of the authors have had any consultancies relevant to this paper. This conflict of interest does not alter these authors’ adherence to all PLOS ONE policies on sharing data and materials, as detailed online in the guide for authors.

Author Contributions

Conceived and designed the experiments: SHS AJS RJL SLH AVSH. Performed the experiments: SHS AJS RJL NJE DK ARW IDP NAA. Analyzed the data: SHS AJS ADD RJL NJE MV. Contributed reagents/materials/analysis tools: ERJ BKLS PFB SLH. Wrote the paper: SHS ADD. Project Management & Quality Assurance: AL RR SK ERJ BKLS PFB AG.