title: "It takes a village": understanding concurrent sexual partnerships in Seattle, Washington.
abstract: BACKGROUND
  Sexually transmitted infections (STIs) are efficiently spread via concurrent partnerships.
  
  
  OBJECTIVE
  This study identifies patterns of concurrency in Seattle STI clinics and community samples to enhance partner notification and counseling.
  
  
  METHODS
  Semistructured interviews with heterosexuals (108 with gonorrhea, chlamydial infection, or nongonococcal urethritis and 120 from high STI prevalence and randomly selected neighborhoods) were tape-recorded, transcribed, and analyzed for content.
  
  
  RESULTS
  Six main forms of concurrency were identified: experimental, separational, transitional, reciprocal, reactive, and compensatory. Experimental concurrency, overlapping short-term partnerships, was most common. Men practiced concurrency to avoid becoming partnerless during partnership disintegration; more women, especially STI patients, reported reactive concurrency, recruiting new partners rather than leaving partners with other partners. Concurrency clustered by age and when occurring during separation and transitioning between partners was socially acceptable.
  
  
  CONCLUSIONS
  Prevalence of concurrent partnerships in all groups studied suggests linkages to individuals' life stage and some social acceptability. STI programs should develop prevention messages to reflect different forms of concurrency.
authors.affiliation: University of California, Los Angeles, California 900095-1772, USA. pgorbach@ucla.edu
authors.forename: Pamina M
authors.initials: PM
authors.lastname: Gorbach
authors.forename: Bradley P
authors.initials: BP
authors.lastname: Stoner
authors.forename: Sevgi O
authors.initials: SO
authors.lastname: Aral
authors.forename: Willian L
authors.initials: WL
authors.lastname: H  Whittington
authors.forename: King K
authors.initials: KK
authors.lastname: Holmes
mesh_terms: D000328:Adult; D000367:Age Factors; D005260:Female; D006306:Health Surveys; D020010:Heterosexuality; D006801:Humans; D008297:Male; D011897:Random Allocation; D012725:Sexual Behavior / Q000523:psychology*; D012747:Sexual Partners; D012749:Sexually Transmitted Diseases / Q000523:psychology / Q000635:transmission*; D011795:Surveys and Questionnaires; D014861:Washington