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Estimativa da incidência de infecção pelo HIV com amostras de soro de gestantes e de usuários de CTA encaminhadas para diagnóstico, empregando o algoritmo de testes sorológicos para infecção recente pelo HIV(STARHS) / HIV infection incidence estimates on sera samples from pregnant women and VCT attendees obtained for diagnosis purposes, by means of serologic testint algorithm for recent HIV seroconversion (STARHS)
São Paulo; s.n; 2006. 138 p. ilus, mapas, tab, graf.
Thesis in Pt | LILACS, SES-SP, CONASS, ColecionaSUS, SESSP-CTDPROD, SES-SP, SESSP-IALPROD, SES-SP, SESSP-TESESESSP, SES-SP | ID: lil-452045
Responsible library: BR91.2
Localization: BR91.2; W4, O48e, 2006
RESUMO
O algoritmo de testes sorológicos para detecção de soroconversão recente para o HIV (STARHS) (Janssen et al., 1998) foi empregado neste estudo para discriminar infecções recentes e crônicas pelo HIV e estimar a incidência da infecção por HIV com amostras de soro provenientes de gestantes, usuários de Centro de Testagem e Aconselhamento (CTA) e indivíduos com suspeita de infecção recente pelo HIV. A associação entre os padrões de bandas presentes no teste de Western blot para HIV-1(WB) e os resultados do STARHS foi avaliada. Foram analisadas 106 amostras de soro de gestantes, 42 de usuários de CTA, 06 de soroconvertores recentes para o HIV (média de 188 dias) e 37 de indivíduos suspeitos de infecção recente pelo HIV. Estimativas de soroincidência de HIV de 0,2 (IC 95 por centos, 0,041-0,608) e 3,3 (IC 95 por cento, 1,426-6,345) por 100 amostras de soro-ano foram observadas com a análise das amostras de gestantes, de 1999 a 2002, e de usuários de CTA, de 2000 a 2001, respectivamente. Os padrões de intensidade de cor das bandas observadas na análise das amostras de soro deste estudo por meio de WB sugerem que há associação entre ausência ou intensidade baixa da banda gp41 e infecção recente [OR=16,44(IC 95%, 6,32 -42,75; p<0.001] e presença das bandas p55, p24 e p17, em intensidade de forte, e infecção crônica [OR=7,01(IC 95%, 3,05-16,14); p<0,001]...
ABSTRACT
The Serological Testing Algorithm for Recent HIV Seroconversion (STARHS) (Jansssen et al., 1998) has been employed in this study to discriminate recent and chronic HIV infections and estimate HIV incidence on HIV-positive sera samples from pregnant women (PW), Voluntary Counseling and Testing (VCT) attendees, and persons suspected to be recently infected by HIV. The association between banding patterns observed on the HIV-1 Western blot test and STARHS results was assessed. A total of 106 samples from PW, 42 samples from VCT attendees, 06 samples from HIV serconverters (mean of 188 days), and 37 samples from subjects under recent HIV-infection suspicion has been analyzed. HIVseroincidence estimates of 0.2 (95% CI, 0.041-0.608) and 3.3 (95% CI, 1.426 ­ 6.345) per 100 sera samples-years were observed for PW, from 1999-2002, and for CTA population, from 2000-2001, respectively. The patterns of color intensity of bands observed in the analysis of sera samples from this study suggest association between absence or weak reactivity at gp41 region and recent infection [OR = 16.44 (95% CI, 6.32 ­ 42.75); p<0.00], and between strong reactivities at p55, p24, and p17 bands and chronic infection [OR = 7.01(95%CI, 3.05 ­ 16.14); p<0.001]. Data from the present study suggest that the evaluation of antiHIV antibodies profiles from specimens stored in sera banks and of raw data from WB performed for HIV/Aids diagnosis could be useful on HIV incidence estimates using serological algorithms, especially when epidemiological and socio-demographic data are available. (AU)
Subject(s)
Full text: 1 Index: LILACS Main subject: HIV Infections / Blotting, Western / Anonymous Testing / Pregnant Women Type of study: Diagnostic_studies / Incidence_studies / Prognostic_studies / Risk_factors_studies / Screening_studies Limits: Female / Humans / Pregnancy Language: Pt Year: 2006 Type: Thesis
Full text: 1 Index: LILACS Main subject: HIV Infections / Blotting, Western / Anonymous Testing / Pregnant Women Type of study: Diagnostic_studies / Incidence_studies / Prognostic_studies / Risk_factors_studies / Screening_studies Limits: Female / Humans / Pregnancy Language: Pt Year: 2006 Type: Thesis