About the Authors

Albert Jan van Hoek

albertjan.vanhoek@phe.gov.uk

Affiliation Immunisation, Hepatitis and Blood Safety Department, Public Health England, London, England

Nick Andrews

Affiliation Immunisation, Hepatitis and Blood Safety Department, Public Health England, London, England

Helen Campbell

Affiliation Immunisation, Hepatitis and Blood Safety Department, Public Health England, London, England

Gayatri Amirthalingam

Affiliation Immunisation, Hepatitis and Blood Safety Department, Public Health England, London, England

W. John Edmunds

Affiliation Department of infectious disease epidemiology, London School of Hygiene and Tropical Medicine, London, England

Elizabeth Miller

Affiliation Immunisation, Hepatitis and Blood Safety Department, Public Health England, London, England

Competing Interests

AJvH, NA, HC, WJE, and EM have disclosed no relevant financial relationships. GA did attend an advisory board on pertussis at GlaxoSmithKline (2010). This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: AJvH HC WJE EM GA. Performed the experiments: AJvH HC. Analyzed the data: AJvH NA. Contributed reagents/materials/analysis tools: AJvH HC WJE. Wrote the paper: AJvH EM.