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Risk factors for influenza among health care workers during 2009 pandemic, Toronto, Ontario, Canada


Kuster, Stefan P; Coleman, Brenda L; Raboud, Janet; McNeil, Shelly; De Serres, Gaston; Gubbay, Jonathan; Hatchette, Todd; Katz, Kevin C; Loeb, Mark; Low, Donald; Mazzulli, Tony; Simor, Andrew; McGeer, Allison J (2013). Risk factors for influenza among health care workers during 2009 pandemic, Toronto, Ontario, Canada. Emerging Infectious Diseases, 19(4):606-615.

Abstract

This prospective cohort study, performed during the 2009 influenza A(H1N1) pandemic, was aimed to determine whether adults working in acute care hospitals were at higher risk than other working adults for influenza and to assess risk factors for influenza among health care workers (HCWs). We assessed the risk for influenza among 563 HCWs and 169 non-HCWs using PCR to test nasal swab samples collected during acute respiratory illness; results for 13 (2.2%) HCWs and 7 (4.1%) non-HCWs were positive for influenza. Influenza infection was associated with contact with family members who had acute respiratory illnesses (adjusted odds ratio [AOR]: 6.9, 95% CI 2.2-21.8); performing aerosol-generating medical procedures (AOR 2.0, 95% CI 1.1-3.5); and low self-reported adherence to hand hygiene recommendations (AOR 0.9, 95% CI 0.7-1.0). Contact with persons with acute respiratory illness, rather than workplace, was associated with influenza infection. Adherence to infection control recommendations may prevent influenza among HCWs.

Abstract

This prospective cohort study, performed during the 2009 influenza A(H1N1) pandemic, was aimed to determine whether adults working in acute care hospitals were at higher risk than other working adults for influenza and to assess risk factors for influenza among health care workers (HCWs). We assessed the risk for influenza among 563 HCWs and 169 non-HCWs using PCR to test nasal swab samples collected during acute respiratory illness; results for 13 (2.2%) HCWs and 7 (4.1%) non-HCWs were positive for influenza. Influenza infection was associated with contact with family members who had acute respiratory illnesses (adjusted odds ratio [AOR]: 6.9, 95% CI 2.2-21.8); performing aerosol-generating medical procedures (AOR 2.0, 95% CI 1.1-3.5); and low self-reported adherence to hand hygiene recommendations (AOR 0.9, 95% CI 0.7-1.0). Contact with persons with acute respiratory illness, rather than workplace, was associated with influenza infection. Adherence to infection control recommendations may prevent influenza among HCWs.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > University Hospital Zurich > Clinic for Infectious Diseases
Dewey Decimal Classification:610 Medicine & health
Language:English
Date:2013
Deposited On:14 Jan 2014 09:40
Last Modified:21 Aug 2017 02:30
Publisher:U.S. National Center for Infectious Diseases
ISSN:1080-6040
Free access at:PubMed ID. An embargo period may apply.
Publisher DOI:https://doi.org/10.3201/eid1904.111812
PubMed ID:23631831

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