Trends in concurrency, polygyny, and multiple sex partnerships during a decade of declining HIV prevalence in eastern Zimbabwe.
Bottom Line: Polygyny accounted for around 25% of male concurrency.No indicator clearly dominated declines in partnerships.Polygyny was surprisingly unstable and, in this population, should not be considered a safe form of concurrency.
Affiliation: Department of Infectious Disease Epidemiology, Imperial College London, United Kingdom.Show MeSH
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Mentions: At baseline, 34.2% of men (95% CI, 32.8%–35.7%) reported multiple partnerships in the past year, 11.9% (10.9%–12.9%) reported nonmarital concurrency, and 4.6% (4.0%–5.3%) reported polygyny. Among women, 4.6% (4.1%–5.2%) reported multiple partnerships, and 1.8% (1.5%–2.2%) reported concurrency. All of the indicators declined over time, with the relative levels remaining similar (Figure 1A). The most substantial decline occurred between the first 2 rounds, with continuing declines between each round, except for polygyny, which declined substantially between rounds 3 (2.7%; 95% CI, 2.3%–3.2%) and 4 (1.5%; 1.2%–1.9%) but recovered somewhat in round 5 (2.2%; 1.8%–2.7%). At baseline, polygyny accounted for approximately 24% of all concurrency (Supplementary Figure 1). This increased modestly over the survey rounds, to an estimated 35% in in the most recent round (Supplementary Figure 1), excepting the decline in polygyny in round 4.Figure 1.
Affiliation: Department of Infectious Disease Epidemiology, Imperial College London, United Kingdom.