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Long-term mortality associated with community-onset bloodstream infection

  • Clinical and Epidemiological Study
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Abstract

Purpose

Although bloodstream infection is widely recognized as an important cause of acute morbidity and mortality, long-term mortality outcomes are less well defined. The objective of this study was to define the early (≤28 days) and late (>28 days) mortality and assess determinants of late death following community-onset bloodstream infection.

Methods

All adult residents of the Calgary Zone who had community-onset bloodstream infections during the period 1 January 2003 and 31 December 2007 were included. The mortality outcome was assessed through to 31 December 2008.

Results

A total of 4,553 cases were identified, of which 2,105 (46%) were healthcare-associated and 2,448 (54%) were community-acquired. The 28-day, 90-day, and 365-day all-cause case–fatality rates were 561/4,553 (12%), 780/4,553 (17%), and 1,131 (25%), respectively. Within the first 28 days, the median time to death was 4 (interquartile range [IQR] 1–12) days, with 158 (28%) and 212 (38%) of early (≤28-day) deaths occurring by days 1 and 2, respectively. Among survivors to 28 days (n = 3,992), 570 (14%) suffered late 1-year mortality (i.e., death occurred between 29 and 365 days postinception). The most common causes of death in this cohort as listed by the vital statistics data were malignancy in 220 (39%), cardiovascular in 135 (24%), and infection-related in 37 (7%). Older age, higher Charlson score, prolonged initial admission duration, and healthcare-associated and polymicrobial infections were independently associated with late 1-year mortality.

Conclusions

Community-onset bloodstream infection is associated with major early and late mortality.

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Conflict of interest

No external funding was received in support of this study. The authors declare that they have no conflict of interest.

Author information

Authors and Affiliations

  1. Department of Medicine, University of Calgary and Alberta Health Services, Calgary, AB, Canada

    K. B. Laupland, D. B. Gregson & D. L. Church

  2. Department of Pathology and Laboratory Medicine, University of Calgary and Alberta Health Services, Calgary, AB, Canada

    K. B. Laupland, D. B. Gregson & D. L. Church

  3. Department of Critical Care Medicine, University of Calgary and Alberta Health Services, Calgary, AB, Canada

    K. B. Laupland

  4. Department of Community Health Sciences, University of Calgary, Calgary, AB, Canada

    K. B. Laupland & L. W. Svenson

  5. Surveillance and Environmental Health, University of Alberta and Alberta Health and Wellness, Edmonton, AB, Canada

    L. W. Svenson

  6. Department of Public Health Sciences, University of Alberta, Edmonton, AB, Canada

    L. W. Svenson

  7. Division of Microbiology, Calgary Laboratory Services, Calgary, AB, Canada

    D. B. Gregson & D. L. Church

  8. Critical Care Medicine, Peter Lougheed Centre, 3500 26th Street NE, Calgary, AB, T1Y 6J4, Canada

    K. B. Laupland

Authors
  1. K. B. Laupland
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  2. L. W. Svenson
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  3. D. B. Gregson
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  4. D. L. Church
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Corresponding author

Correspondence to K. B. Laupland.

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Laupland, K.B., Svenson, L.W., Gregson, D.B. et al. Long-term mortality associated with community-onset bloodstream infection. Infection 39, 405–410 (2011). https://doi.org/10.1007/s15010-011-0149-x

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  • DOI: https://doi.org/10.1007/s15010-011-0149-x

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