{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,25]],"date-time":"2026-07-25T11:11:17Z","timestamp":1784977877476,"version":"3.55.0"},"reference-count":49,"publisher":"American Public Health Association","issue":"S1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Am J Public Health"],"published-print":{"date-parts":[[2010,4]]},"abstract":"<jats:p> Objectives. We sought to determine the association of social\u2013environmental factors with condom use and sexually transmitted infections (STIs) among 420 sex workers participating in an STI\/HIV prevention study in Corumb\u00e1, Brazil, to inform future intervention efforts. <\/jats:p><jats:p> Methods. Participants provided urine samples for polymerase chain reaction testing of chlamydia and gonorrhea and responded to multi-item scales addressing perceived social cohesion, participation in networks, and access to and management of resources. We conducted multivariate log-linear and negative binomial regression analyses of these data. <\/jats:p><jats:p> Results. Increased social cohesion was inversely associated with number of unprotected sex acts in the preceding week among women (adjusted incidence rate ratio [IRR] = 0.80; P &lt; .01), and there was a marginal association among men (adjusted IRR = 0.41; P = .08). Women's increased participation in social networks was associated with a decrease in frequency of unprotected sex acts (adjusted IRR = 0.83; P = .04), as was men's access to and management of social and material resources (IRR = 0.15; P = .01). Social\u2013environmental factors were not associated with STIs. <\/jats:p><jats:p> Conclusions. The social context within which populations negotiate sexual behaviors is associated with condom use. Future efforts to prevent STI\/HIV should incorporate strategies to modify the social environment. <\/jats:p>","DOI":"10.2105\/ajph.2008.147462","type":"journal-article","created":{"date-parts":[[2009,9,18]],"date-time":"2009-09-18T05:30:36Z","timestamp":1253251836000},"page":"S216-S223","source":"Crossref","is-referenced-by-count":97,"title":["Social-Environmental Factors and Protective Sexual Behavior Among Sex Workers: The <i>Encontros<\/i> Intervention in Brazil"],"prefix":"10.2105","volume":"100","author":[{"given":"Sheri A.","family":"Lippman","sequence":"first","affiliation":[{"name":"At the time of this study, Sheri A. Lippman, Angela Donini, Juan D\u00edaz, and Magda Chinaglia were with the Population Council's Brazil Office, Campinas. Arthur Reingold is with the Division of Epidemiology, University of California, Berkeley. Deanna Kerrigan is with the Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Angela","family":"Donini","sequence":"additional","affiliation":[{"name":"At the time of this study, Sheri A. Lippman, Angela Donini, Juan D\u00edaz, and Magda Chinaglia were with the Population Council's Brazil Office, Campinas. Arthur Reingold is with the Division of Epidemiology, University of California, Berkeley. Deanna Kerrigan is with the Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Juan","family":"D\u00edaz","sequence":"additional","affiliation":[{"name":"At the time of this study, Sheri A. Lippman, Angela Donini, Juan D\u00edaz, and Magda Chinaglia were with the Population Council's Brazil Office, Campinas. Arthur Reingold is with the Division of Epidemiology, University of California, Berkeley. Deanna Kerrigan is with the Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Magda","family":"Chinaglia","sequence":"additional","affiliation":[{"name":"At the time of this study, Sheri A. Lippman, Angela Donini, Juan D\u00edaz, and Magda Chinaglia were with the Population Council's Brazil Office, Campinas. Arthur Reingold is with the Division of Epidemiology, University of California, Berkeley. Deanna Kerrigan is with the Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Arthur","family":"Reingold","sequence":"additional","affiliation":[{"name":"At the time of this study, Sheri A. Lippman, Angela Donini, Juan D\u00edaz, and Magda Chinaglia were with the Population Council's Brazil Office, Campinas. Arthur Reingold is with the Division of Epidemiology, University of California, Berkeley. Deanna Kerrigan is with the Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Deanna","family":"Kerrigan","sequence":"additional","affiliation":[{"name":"At the time of this study, Sheri A. Lippman, Angela Donini, Juan D\u00edaz, and Magda Chinaglia were with the Population Council's Brazil Office, Campinas. Arthur Reingold is with the Division of Epidemiology, University of California, Berkeley. 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