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Investigation of an Outbreak of 2009 Pandemic Influenza A Virus (H1N1) Infections among Healthcare Personnel in a Chicago Hospital

  • Shelley S. Magill (a1), Stephanie R. Black (a2), Matthew E. Wise (a1), Alexander J. Kallen (a1), Soo-Jeong Lee (a1), Tracie Gardner (a1) (a3), Farah Husain (a1), Arjun Srinivasan (a1), Susan I. Gerber (a2) and Michael Jhung (a1)...

Extract

In May 2009, we investigated a hospital outbreak of pandemic H1N1 (pH1N1) infection among healthcare personnel (HCP). Thirteen (65%) of 20 HCP with pH1N1 infection had healthcare-associated cases, which were primarily attributed to transmission among HCP. Eleven (55%) of HCP with pH1N1 infection worked for 1 day or more after the onset of illness. Personnel working with mild illness may have contributed to transmission among HCP.

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Corresponding author

Centers for Disease Control and Prevention, 1600 Clifton Road NE, Mailstop A-24, Atlanta, GA 30333 (smagill@cdc.gov)

References

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1.Apisarnthanarak, A, Mundy, LM. Outbreak of influenza A (2009) H1N1 among Thai healthcare workers: is it time to integrate a vaccination program? Infect Control Hosp Epidemiol 2010;31:854856.
2.Centers for Disease Control and Prevention. Novel influenza A (H1N1) virus infections among health-care personnel—United States, April-May 2009. MMWR Morbid Mortal Wkly Rep 2009;58:641645.
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4.Centers for Disease Control and Prevention. Guidelines and recommendations: prevention strategies for seasonal influenza in healthcare settings, http://www.cdc.gov/flu/professionals/infectioncontrol/healthcaresettings.htm#recommendations. Accessed October 18, 2010.
5.Centers for Disease Control and Prevention. Interim guidance for infection control for care of patients with confirmed or suspected novel influenza A (H1N1) virus infection in a health-care setting; May 13, 2009; updated October 14, 2009; most recent update July 15, 2010. http://www.cdc.gov/hlnlflu/guidelines_infection_control.htm. Accessed July 29, 2009.

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