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Article History

Received: 23 April 2018

Accepted: 20 November 2018

First Online: 11 December 2018

Ethics approval and consent to participate

: Each survey from 2006 to 2016 was approved by the Ethic Board Committee of the CHU de Quebec-University Laval Hospital and written consent was obtained from all the participants.

: Not applicable.

: Gaston De Serres received research grand for investigator-initiated studies from Pfizer and GlaxoSmithKline (GSK) and was reimbursed expenses to travel to an ad hoc advisory board meeting by GSK but received no honoraria. He has equally provided paid expert testimony in a grievance against a vaccine-or-mask healthcare worker influenza vaccination policy for the Ontario Nurse Association. Other authors have no conflicts of interest to declare.

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