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AIDS Care. 2015;27(5):561-9. doi: 10.1080/09540121.2014.986049. Epub 2015 Feb 11.

HIV in young people: characteristics and predictors for late diagnosis of HIV.

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a Department of Preventive and Social Medicine, Faculty of Medicine , Chulalongkorn University , Bangkok , Thailand.


Late diagnosis of human immunodeficiency virus (HIV) infection remains a challenging issue, especially in young population, which accounts for approximately half of new HIV infections. This study aimed to assess factors associated with late diagnosis of HIV infection in young people. It employed a hospital-based case-control design, conducted during January 2012 through August 2013. A total of 193 patients aged 18-25 years old from 21 hospitals across Thailand were studied. Late diagnosis was defined as presentation when the CD4 cell count was less than 350 cells/┬ÁL within 12 months of the first HIV diagnosis, or AIDS-defining event is present within 12 months of the first HIV diagnosis. Factors associated with the late diagnosis of HIV were those who: did not live with their parent (OR 3.87; 95% CI 1.40-10.66), had no children (OR 3.25; 95% CI 1.27-8.31), had their first sexual intercourse at age older than 18 years (OR 4.25; 95% CI 1.27-14.22), had same-age or older partners (OR 3.36; 95% CI 1.39-8.08), were substance users (OR 3.65; 95% CI 1.22-10.88), believed they changed their behaviors after receiving HIV education (OR 2.48; 95% CI 1.02-5.99), and sought care at regional (OR 3.19; 95% 1.31-7.79) or general hospitals (OR 3.34; 95% 1.07-10.35). Strategies for early HIV detection in young people should be reconsidered; particularly the involvement of parents and targeting the right population.


AIDS; HIV; late diagnosis; risk factor; youth

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