Effect of Influenza Vaccination of Nursing Home Staff on Mortality of Residents: A Cluster-Randomized Trial
Effect of Influenza Vaccination of Nursing Home Staff on Mortality of Residents: A Cluster-Randomized Trial
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DOI:
10.1111/j.1532-5415.2009.02402.x
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发表时间:
2009-09-01
影响因子:
6.3
通讯作者:
Carrat, Fabrice
中科院分区:
文献类型:
--
作者:
Lemaitre, Magali;Meret, Thierry;Carrat, Fabrice
OBJECTIVES: To evaluate the effect of staff influenza vaccination on all-cause mortality in nursing home residents.DESIGN: Pair-matched cluster-randomized trial.SETTING: Forty nursing homes matched for size, staff vaccination coverage during the previous season, and resident disability index.PARTICIPANTS: All persons aged 60 and older residing in the nursing homes.INTERVENTION: Influenza vaccine was administered to volunteer staff after a face-to-face interview. No intervention took place in control nursing homes.MEASUREMENTS: The primary endpoint was total mortality rate in residents from 2 weeks before to 2 weeks after the influenza epidemic in the community. Secondary endpoints were rates of hospitalization and influenza-like illness (ILI) in residents and sick leave from work in staff.RESULTS: Staff influenza vaccination rates were 69.9% in the vaccination arm versus 31.8% in the control arm. Primary unadjusted analysis did not show significantly lower mortality in residents in the vaccination arm (odds ratio = 0.86, P = .08), although multivariate-adjusted analysis showed 20% lower mortality (P = .02), and a strong correlation was observed between staff vaccination coverage and all-cause mortality in residents (correlation coefficient = -0.42, P = .007). In the vaccination arm, significantly lower resident hospitalization rates were not observed, but ILI in residents was 31% lower (P = .007), and sick leave from work in staff was 42% lower (P = .03).CONCLUSION: These results support influenza vaccination of staff caring for institutionalized elderly people. J Am Geriatr Soc 57:1580-1586, 2009.