The potential effect of temporary immunity as a result of bias associated with healthy users and social determinants on observations of influenza vaccine effectiveness; could unmeasured confounding explain observed links between seasonal influenza vaccine and pandemic H1N1 infection?

Peer Review reports

Original Submission
14 Jan 2012	Submitted	Original manuscript
13 Feb 2012	Reviewed	Reviewer Report - Rolf Groenwold
2 Mar 2012	Reviewed	Reviewer Report - Marta Valenciano
Resubmission - Version 2
	Submitted	Manuscript version 2
2 May 2012	Reviewed	Reviewer Report - Rolf Groenwold
10 Jun 2012	Author responded	Author comments - Natasha Crowcroft
Resubmission - Version 3
10 Jun 2012	Submitted	Manuscript version 3
Publishing
15 Jun 2012	Editorially accepted
20 Jun 2012	Article published	10.1186/1471-2458-12-458

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