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J Infect. 2011 Oct;63(4):267-73. doi: 10.1016/j.jinf.2011.04.009. Epub 2011 May 1.

Risk factors for pandemic H1N1 2009 infection in healthcare personnel of four general hospitals.

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  • 1Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University Yongsan Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, Seoul 156-755, Republic of Korea.


To characterize an outbreak of pandemic H1N1 2009 among healthcare personnel (HCP), we conducted a cross-sectional survey of HCP who had worked in four general hospitals during the outbreak. More than one-quarter of responding HCP (27.6%) had influenza-like illness (ILI) during the outbreak. The estimated infection rate of pandemic H1N1 2009 was 9.1% in the study of HCP. Independent risk factors for ILI were female gender, <40 years of age, the presence of chronic diseases associated with influenza complications, having family members with ILI or pandemic H1N1 2009, and working in influenza outpatient, influenza inpatient, non-influenza outpatient or emergency departments. During the outbreak of pandemic H1N1 2009, HCP frequently had ILI or the influenza infection. The development of the influenza infection in HCP was associated with some of their baseline characteristics, occupational risk factors, and non-occupational ones during the outbreak.

Copyright © 2011 The British Infection Association. Published by Elsevier Ltd. All rights reserved.

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