title: The impact of male-to-male sexual experience on risk profiles of blood donors.
abstract: BACKGROUND
  Men who have had sex with men (MSM) since 1977 are permanently deferred from donating blood. Excluding only men who engaged in male-to-male sex within either the prior 12 months or 5 years has been proposed. Little is known about infectious disease risks of MSM who donate blood.
  
  
  METHODS
  Weighted analyses of data from an anonymous mail survey of blood donors were conducted to examine the characteristics of men reporting male-to-male sex during specified time periods.
  
  
  RESULTS
  Of the 25,168 male respondents, 569 (2.4%) reported male-to-male sex, 280 (1.2%) since 1977. Compared to donors who did not report male-to-male sex, the prevalence of reactive screening test results was higher among donors who reported the practice within the past 5 years (< or =12 months odds ratio [OR] 5.3, 95% confidence interval [CI] 2.6-10.4; >12 months to 5 years, OR 7.1, 95% CI 1.2-41.7); however, no significant difference was found for donors who last practiced male-to-male sex more than 5 years ago (>5 years-after 1977, OR 1.4, 95% CI 0.7-2.6; 1977 or earlier, OR 1.6, 95% CI 0.7-3.7). The prevalence of unreported deferrable risks (UDRs) other than male-to-male sex was significantly higher for all donors who reported male-to-male sex with ORs ranging from 3.1 to 18.9 (p < or = 0.01).
  
  
  CONCLUSIONS
  No evidence was found to support changing current policy to permit donations from men who practiced male-to-male sex within the past 5 years. For donors with a more remote history of male-to-male sex, the findings were equivocal. A better understanding of the association between male-to-male sex and other UDRs appears needed.
authors.affiliation: Westat, Rockville, Maryland 20850, USA.
authors.forename: Ana M
authors.initials: AM
authors.lastname: Sanchez
authors.forename: George B
authors.initials: GB
authors.lastname: Schreiber
authors.forename: Catharie C
authors.initials: CC
authors.lastname: Nass
authors.forename: Simone
authors.initials: S
authors.lastname: Glynn
authors.forename: Debra
authors.initials: D
authors.lastname: Kessler
authors.forename: Nora
authors.initials: N
authors.lastname: Hirschler
authors.forename: Joy
authors.initials: J
authors.lastname: Fridey
authors.forename: James
authors.initials: J
authors.lastname: Bethel
authors.forename: Edward
authors.initials: E
authors.lastname: Murphy
authors.forename: Michael P
authors.initials: MP
authors.lastname: Busch
mesh_terms: D001771:Blood Banks / Q000592:standards*; D001782:Blood Donors / Q000706:statistics & numerical data*; D003625:Data Collection; D006305:Health Status Indicators; D018451:Homosexuality, Male / Q000706:statistics & numerical data*; D006801:Humans; D008297:Male; D015995:Prevalence; D012309:Risk-Taking; D012725:Sexual Behavior / Q000706:statistics & numerical data*; D012747:Sexual Partners