About the Authors

David N. Fisman

david.fisman@utoronto.ca

Affiliation Division of Epidemiology, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada

Ashleigh R. Tuite

Affiliation Division of Epidemiology, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada

Competing Interests

The authors have read the journal's policy and have the following conflicts: This research was supported by Novartis, which manufactures an adjuvanted influenza vaccine. 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: ART DNF. Performed the experiments: ART. Analyzed the data: ART DNF. Wrote the paper: ART DNF.