Letters to the Editor
Potential for bias in assessing risk and protective factors for COVID-19: Commentary on Conlon et al.’s “Impact of the influenza vaccination on COVID-19 infection rates and severity”

https://doi.org/10.1016/j.ajic.2021.05.005Get rights and content

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Conflicts of interest: The author reports no conflicts of interest.

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© 2021 Association for Professionals in Infection Control and Epidemiology, Inc. Published by Elsevier Inc. All rights reserved.