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Volume 8, Number 8—August 2002

Dispatch

Shigellosis Linked to Sex Venues, Australia

Belinda O'Sullivan*, Valerie Delpech*Comments to Author , Giulietta Pontivivo†, Thomas Karagiannis‡, Debbie Marriott‡, John Harkness‡, and Jeremy M. McAnulty*
Author affiliations: *New South Wales Health Department, New South Wales, Australia; †Prince of Wales Hospital, Sydney, Australia; and ‡St. Vincent’s Hospital, Sydney, Australia;

Main Article

Table

Characteristics of shigellosis patients and controls, New South Wales, Australia, April 1– July 31, 2000

Patients
N=42 (%) Controls
N=65 (%) Crude odds ratio (95% CIa)
Casual sex partners in the last 3 months 37 (88) 46 (71) 3.1 (1.0 to 9.0)b
Visited a sex venue in the last 3 months 31 (74) 28 (43) 3.6 (1.6 to 8.5)b
Visited a sex venue in the last 2 weeks 24 (57) 14 (22) 4.8 (2.1 to 11.4)b
More than one sex partner in the last 2 weeks 21 (50) 21 (32) 3.1 (1.3 to 7.5)b
Any sex in the 2 weeks before onset of illnessc 37 (88) 52 (80) Incalcd
Oral receptive sex in the last 2 weeksd 35 (83) 48 (74) 1.77 (0.7 to 4.7)
Anal insertive sex in the last 2 weeksd 26 (62) 32 (49) 1.7 (0.8 to 3.7)
Anal receptive sex in the last 2 weeksd 25 (60) 28 (43) 1.9 ( 0.9 to 4.3)
Oral-anal insertive sex in the last 2 weeksd 13 (31) 22 (34) 0.9 (0.4 to 2.0)
Digital insertive sex in the last 2 weeksd 26 (62) 31 (48) 1.8 (0.8 to 3.9)
Not always washing hands after sex in the last 2 weeks 16 (38) 19 (29) 1.4 (0.6 to 3.2)
Dined out at a commercial food outletc in the last 3 days before onset of illness 25 (60) 27 (42) 2.5 (1.1 to 5.8)b
Traveled overseas in the last 3 months 9 (24) 12 (18) 1.3 (0.5 to 3.4)
HIV positive 22 (52) 31 (48) 1.2 (0.6 to 2.6)

a90% CI, 95% confidence intervals.
bSignificant at p<0.05
cFor controls, this question was asked in relation to previous 2 weeks rather than the 2 weeks before onset of illness.
dMissing values were excluded from the analysis except for sexual activity variables (e.g., oral insertive sex), for which participants were asked to indicate “yes” if they did the specified activity. As such, failure to answer these questions was considered a “no” response.

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