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Risk factors for mortality in non-pregnancy-related listeriosis

Published online by Cambridge University Press:  21 June 2011

P. MOOK*
Affiliation:
Gastrointestinal, Emerging and Zoonotic Infections Department, Health Protection Services Colindale, Health Protection Agency, London, UK
B. PATEL
Affiliation:
Health Protection Agency Collaborating Laboratory, Department of Microbiology, North West London Hospitals, Harrow, UK
I. A. GILLESPIE
Affiliation:
Gastrointestinal, Emerging and Zoonotic Infections Department, Health Protection Services Colindale, Health Protection Agency, London, UK School of Translational Medicine, University of Manchester, Manchester, UK
*
*Author for correspondence: Mr P. Mook, Gastrointestinal, Emerging and Zoonotic Infections Department, Health Protection Services Colindale, Health Protection Agency, 61 Colindale Avenue, London NW9 5EQ, UK. (Email: piers.mook@hpa.org.uk)
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Summary

We examined non-pregnancy-related listeriosis cases in England and Wales reported to the Health Protection Agency between 1990 and 2009 (n=1864) using unconditional multivariate logistic regression analysis to identify factors independently associated with mortality. A subset analysis of cases between 2005 and 2009 (n=694) investigated the additional effect of antibiotic therapy on survival. In these cases particular malignancies, alcoholism, cardiovascular disease, increasing age, and treatment to reduce gastric acid secretion were positively associated with mortality. The absence of a concurrent condition and presence of autoimmune disease had a protective effect. The subset analysis identified illness in winter or spring as a risk factor and antibiotic therapy as a protective factor for mortality. The impact of antibiotic therapy, seasonality and reduced gastric acid status on survival should be further investigated. Policy-makers and clinicians need to more broadly advise those at risk of contracting this disease and dying as a consequence.

Information

Type
Original Papers
Copyright
Copyright © Cambridge University Press 2011
Figure 0

Fig. 1. Number of cases of non-pregnancy-related listeriosis with a returned clinical questionnaire and available mortality data by mortality outcome and corresponding case-fatality rate, England and Wales, 1990–2009.

Figure 1

Table 1. Factors affecting death in cases of L. monocytogenes infection in England and Wales, 1990–2009* (column percentages) (n=1864)

Figure 2

Table 2. Factors independently associated with mortality in cases of L. monocytogenes infection, England and Wales, 1990–2009 (n=1984)*

Figure 3

Table 3. Factors affecting death in cases of L. monocytogenes infection in England and Wales, 2005–2009* (column percentages) (n=694)

Figure 4

Table 4. Factors independently associated with mortality in cases of L. monocytogenes infection, England and Wales, 2005–2009* (n=694)

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