95. Universal Employee Influenza Vaccination Decreases Employee Sick Days
Session: Oral Abstract Session: Influenza
Thursday, October 18, 2012: 9:15 AM
Room: SDCC 25 ABC

Background: Influenza is highly contagious and can spread rapidly through a healthcare facility; it is estimated that up to 25% of healthcare workers contract influenza each year. Employee absences tend to increase during influenza season although a relationship between increased influenza vaccination and decreased absentee rates has not previously been shown. Denver Health Medical Center (DHMC) implemented a universal influenza vaccination policy in 2011, requiring all employees and contractors with direct patient care contact to receive an influenza vaccine by Dec 1, 2011. The goal of this study is to explore the relationship between employee absences and influenza vaccination rates in years with comparable influenza activity. 

Methods: The 2006-2007 influenza season was chosen as an appropriate comparison to the 2011-2012 influenza season because they were classified as mild and low respectively by the CDC. Monthly sick call data for direct care providers were obtained for Oct to Mar 2006-2007 and 2011-2012. After obtaining sick call data, the monthly mean incidence rate of sick calls per 100 employees was calculated using the total number of direct care providers for each month as the denominator. The student's t-test was used to compare the monthly mean absentee rate per 100 employees between the 2006-2007 and 2011-2012 influenza seasons. The influenza vaccination rate for 2011-2012 was obtained through occupational health records at DHMC. Influenza vaccination data prior to 2009 were not available although the vaccination rates in 2009-2010 and 2010-2011 were 65% and 67% respectively. We estimate that the influenza vaccination rate in 2006-2007 was approximately equivalent to the rates in 2009-2011. 

Results: The rate of influenza vaccination among hospital employees was 98% in 2011-2012. The mean clinical employee absence rate in October through March 2006-2007 was 9.14 per 100 employees per month while in 2011-2012 the absence rate was 6.15 absences per 100 employees per month (p =.0004). 

Conclusion: We observed a decrease in clinical employee absences at DHMC with the implementation of universal influenza vaccination. Further research is necessary to rule out the possible influence of other factors, as well as to assess employee absence during influenza seasons with greater severity.

Bryan Knepper, MPH, MSc, Heather Young, MD, Quin Davis, RN, Cortney Dickey, MPA, PHR, HRIS, Amber Miller, RN, MSN, CIC, Cathy Vigil, RN, CIC, Kenneth Stiefvater, BSN RN, Megan Bisek, MA and Connie Price, MD, Denver Health Medical Center, Denver, CO


B. Knepper, None

H. Young, None

Q. Davis, None

C. Dickey, None

A. Miller, None

C. Vigil, None

K. Stiefvater, None

M. Bisek, None

C. Price, None

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