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Volume 19, Number 1—January 2013

Research

Infections with Spore-forming Bacteria in Persons Who Inject Drugs, 2000–2009

Norah E. PalmateerComments to Author , Vivian D. Hope, Kirsty Roy, Andrea Marongiu, Joanne M. White, Kathie A. Grant, Colin N. Ramsay, David J. Goldberg, and Fortune Ncube
Author affiliations: Author affiliations: Health Protection Scotland, Glasgow, Scotland, UK (N.E. Palmateer, K. Roy, C.N. Ramsay, D.J. Goldberg); Health Protection Agency, London, UK (V.D. Hope, A. Marongiu, J.M. White, K.A. Grant, F. Ncube); London School of Hygiene and Tropical Medicine, London (V.D. Hope)

Main Article

Table 2

Sex distribution and median age of PWID with botulism, tetanus, Clostridium novyi infection, and anthrax among a community sample of PWID, England and Scotland, 2000–2009*

PWID England

Scotland
No.† Female, % p value‡ No.† Median age, y (IQR) p value§ No.† Female, % p value‡ No. Median age, y (IQR) p value§
Community¶ 1,732 24 1,711 32 (11) 1,763 26 1,772 33 (10)
With botulism 139 30 0.157 128 37 (13) <0.001 18 11 0.186 13# 31 (5) 0.670
With tetanus 28 46 0.006 28 35 (19) 0.067 5 60 0.112 5 47 (17) 0.065
With C. novyi infection 32 44 0.011 32 33 (11) 0.654 60 52 <0.001 57# 30 (8) 0.086
With anthrax NA NA 13 38 0.297 13 35 (9) 0.093
Total with infection 199 32 0.002 188 35.5 (13.5) <0.001 96 43 <0.001 88 31 (9) 0.232

*PWID, persons who inject drugs; IQR, Interquartile range; NA, not applicable.
†For the community samples, information about sex of 8 (England) and 9 (Scotland) persons was missing, and information about age for 29 persons (England) was missing.
‡Based on the χ2 test or Fisher exact test (where tabular cell counts were <5 for the difference in proportion of female case-patients with the respective infections and the community sample of PWID).
§Based on the Mann-Whitney test for the difference in median age between the case-patients with the respective infection(s) and the community sample of PWID.
¶Data from the Unlinked Anonymous Monitoring Survey 2005 (15) for England (n = 1,740) and from the Needle Exchange Surveillance Initiative 2008/2009 (16) for Scotland (n = 1,772).
#Complete data on age were available for 13/18 botulism case-patients and 57/60 C. novyi case-patients.

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