Timing is everything: international variations in historical sexual partnership concurrency and HIV prevalence.

<h4>Background</h4>Higher prevalence of concurrent partnerships is one hypothesis for the severity of the HIV epidemic in the countries of Southern Africa. But measures of the prevalence of concurrency alone do not adequately capture the impact concurrency will have on transmission dynam...

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Autores principales:	Martina Morris, Helen Epstein, Maria Wawer
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2010
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e7b66f6ed9804d9ea2f8380cd124b66d
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spelling	oai:doaj.org-article:e7b66f6ed9804d9ea2f8380cd124b66d2021-11-18T07:36:33ZTiming is everything: international variations in historical sexual partnership concurrency and HIV prevalence.1932-620310.1371/journal.pone.0014092https://doaj.org/article/e7b66f6ed9804d9ea2f8380cd124b66d2010-11-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21124829/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>Higher prevalence of concurrent partnerships is one hypothesis for the severity of the HIV epidemic in the countries of Southern Africa. But measures of the prevalence of concurrency alone do not adequately capture the impact concurrency will have on transmission dynamics. The importance of overlap duration and coital exposure are examined here.<h4>Methodology/principal findings</h4>We conducted a comparison of data from three studies of sexual behavior carried out in the early 1990s in Uganda, Thailand and the US. Using cumulative concurrency measures, the three countries appeared somewhat similar. Over 50% of both Thai and Ugandan men reported a concurrency within the last three partnerships and over 20% reported a concurrency in the last year, the corresponding rates among US men were nearly 20% for Blacks and Hispanics, and about 10% for other racial/ethnic groups. Concurrency measures that were more sensitive to overlap duration, however, showed large differences. The point prevalence of concurrency on the day of interview was over 10% among Ugandan men compared to 1% for Thai men. Ugandan concurrencies were much longer duration - a median of about two years - than either the Thai (1 day) or US concurrencies (4-9 months across all groups), and involved 5-10 times more coital risk exposure with the less frequent partner. In the US, Blacks and Hispanics reported higher prevalence, longer duration and greater coital exposure than Whites, but were lower than Ugandans on nearly every measure. Together, the differences in the prevalence, duration and coital exposure of concurrent partnerships observed align with the HIV prevalence differentials seen in these populations at the time the data were collected.<h4>Conclusions/significance</h4>There were substantial variations in the patterns of concurrent partnerships within and between populations. More long-term overlapping partnerships, with regular coital exposure, were found in populations with greater HIV epidemic severity.Martina MorrisHelen EpsteinMaria WawerPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 5, Iss 11, p e14092 (2010)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Martina Morris Helen Epstein Maria Wawer Timing is everything: international variations in historical sexual partnership concurrency and HIV prevalence.
description	<h4>Background</h4>Higher prevalence of concurrent partnerships is one hypothesis for the severity of the HIV epidemic in the countries of Southern Africa. But measures of the prevalence of concurrency alone do not adequately capture the impact concurrency will have on transmission dynamics. The importance of overlap duration and coital exposure are examined here.<h4>Methodology/principal findings</h4>We conducted a comparison of data from three studies of sexual behavior carried out in the early 1990s in Uganda, Thailand and the US. Using cumulative concurrency measures, the three countries appeared somewhat similar. Over 50% of both Thai and Ugandan men reported a concurrency within the last three partnerships and over 20% reported a concurrency in the last year, the corresponding rates among US men were nearly 20% for Blacks and Hispanics, and about 10% for other racial/ethnic groups. Concurrency measures that were more sensitive to overlap duration, however, showed large differences. The point prevalence of concurrency on the day of interview was over 10% among Ugandan men compared to 1% for Thai men. Ugandan concurrencies were much longer duration - a median of about two years - than either the Thai (1 day) or US concurrencies (4-9 months across all groups), and involved 5-10 times more coital risk exposure with the less frequent partner. In the US, Blacks and Hispanics reported higher prevalence, longer duration and greater coital exposure than Whites, but were lower than Ugandans on nearly every measure. Together, the differences in the prevalence, duration and coital exposure of concurrent partnerships observed align with the HIV prevalence differentials seen in these populations at the time the data were collected.<h4>Conclusions/significance</h4>There were substantial variations in the patterns of concurrent partnerships within and between populations. More long-term overlapping partnerships, with regular coital exposure, were found in populations with greater HIV epidemic severity.
format	article
author	Martina Morris Helen Epstein Maria Wawer
author_facet	Martina Morris Helen Epstein Maria Wawer
author_sort	Martina Morris
title	Timing is everything: international variations in historical sexual partnership concurrency and HIV prevalence.
title_short	Timing is everything: international variations in historical sexual partnership concurrency and HIV prevalence.
title_full	Timing is everything: international variations in historical sexual partnership concurrency and HIV prevalence.
title_fullStr	Timing is everything: international variations in historical sexual partnership concurrency and HIV prevalence.
title_full_unstemmed	Timing is everything: international variations in historical sexual partnership concurrency and HIV prevalence.
title_sort	timing is everything: international variations in historical sexual partnership concurrency and hiv prevalence.
publisher	Public Library of Science (PLoS)
publishDate	2010
url	https://doaj.org/article/e7b66f6ed9804d9ea2f8380cd124b66d
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Timing is everything: international variations in historical sexual partnership concurrency and HIV prevalence.

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