Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 30
Filtrar
Mais filtros

País/Região como assunto
Tipo de documento
Intervalo de ano de publicação
1.
Popul Health Metr ; 15(1): 39, 2017 Nov 22.
Artigo em Inglês | MEDLINE | ID: mdl-29166948

RESUMO

BACKGROUND: Reliable data on cause of death (COD) are fundamental for planning and resource allocation priorities. We used GBD 2015 estimates to examine levels and trends for the leading causes of death in Brazil from 1990 to 2015. METHODS: We describe the main analytical approaches focused on both overall and specific causes of death for Brazil and Brazilian states. RESULTS: There was an overall improvement in life expectancy at birth from 1990 to 2015, but with important heterogeneity among states. Reduced mortality due to diarrhea, lower respiratory infections, and other infectious diseases contributed the most for increasing life expectancy in most states from the North and Northeast regions. Reduced mortality due to cardiovascular diseases was the highest contributor in the South, Southeast, and Center West regions. However, among men, intentional injuries reduced life expectancy in 17 out of 27 states. Although age-standardized rates due to ischemic heart disease (IHD) and cerebrovascular disease declined over time, these remained the leading CODs in the country and states. In contrast, leading causes of premature mortality changed substantially - e.g., diarrheal diseases moved from 1st to 13th and then the 36th position in 1990, 2005, and 2015, respectively, while violence moved from 7th to 1st and to 2nd. Overall, the total age-standardized years of life lost (YLL) rate was reduced from 1990 to 2015, bringing the burden of premature deaths closer to expected rates given the country's Socio-demographic Index (SDI). In 1990, IHD, stroke, diarrhea, neonatal preterm birth complications, road injury, and violence had ratios higher than the expected, while in 2015 only violence was higher, overall and in all states, according to the SDI. CONCLUSIONS: A widespread reduction of mortality levels occurred in Brazil from 1990 to 2015, particularly among children under 5 years old. Major shifts in mortality rates took place among communicable, maternal, neonatal, and nutritional disorders. The mortality profile has shifted to older ages with increases in non-communicable diseases as well as premature deaths due to violence. Policymakers should address health interventions accordingly.


Assuntos
Causas de Morte , Doenças Transmissíveis/mortalidade , Carga Global da Doença , Expectativa de Vida , Mortalidade Prematura , Doenças não Transmissíveis/mortalidade , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Brasil/epidemiologia , Criança , Pré-Escolar , Pessoas com Deficiência , Feminino , Humanos , Lactente , Recém-Nascido , Masculino , Pessoa de Meia-Idade , Mortalidade/tendências , Violência/estatística & dados numéricos , Adulto Jovem
2.
AIDS Behav ; 19(9): 1630-41, 2015 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-25666270

RESUMO

We estimated the prevalence of sexual violence (SV) experience among men who have sex with men (MSM) in Brazil and identified its associated risk factors. We recruited 3859 MSM through respondent driven sampling. A multivariable hierarchical analysis was performed using an ecological model. The prevalence of having ever experienced SV was 15.9 % (95 % confidence interval [CI] 14.7-17.1). SV experience was independently associated with discrimination due to sexual orientation (odds ratio [OR] 3.05; 95 % CI 2.10-4.42), prior HIV testing (OR 1.81; 95 % CI 1.25-2.63), ≤14 years at first sex (OR 1.86; 95 % CI 1.28-2.71), first sex with a man (OR 1.89; 95 % CI 1.28-2.79), presenting STI symptoms (last year) (OR 1.66; 95 % CI 1.12-2.47), and having suicidal ideas (last 6 months) (OR 2.08; 95 % CI 1.30-3.35). The high levels of SV against MSM in Brazil place them at a markedly higher risk of SV than the general population. Homophobic prejudice is the strongest determinant of SV and urgently needs to be included at the forefront of the national response to SV.


Assuntos
Infecções por HIV/epidemiologia , Inquéritos Epidemiológicos , Homossexualidade Masculina/estatística & dados numéricos , Delitos Sexuais/estatística & dados numéricos , Adulto , Brasil/epidemiologia , Estudos Transversais , Homossexualidade Masculina/psicologia , Humanos , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Razão de Chances , Prevalência , Fatores de Risco , Inquéritos e Questionários
3.
AIDS Care ; 26(4): 505-13, 2014 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23998905

RESUMO

People living with mental illness are at increased risk for HIV. There are scarce data on correlates and prevalence of HIV infection, and none with a nationally representative sample. We report on correlates of HIV infection from a cross-sectional national sample of adults receiving care in 26 publicly funded mental health treatment settings throughout Brazil. Weighted prevalence rate ratios were obtained using multiple log-binomial regression modeling. History of homelessness, ever having an STD, early age of first sexual intercourse before 18 years old, having suffered sexual violence, previous HIV testing, self-perception of high risk of HIV infection and not knowing one's risk were statistically associated with HIV infection. Our study found an elevated HIV seroprevalence and correlates of infection were not found to include psychiatric diagnoses or hospitalizations but instead reflected marginalized living circumstances and HIV testing history. These adverse life circumstances (history of homelessness, having suffered sexual violence, reporting a sexually transmitted disease, and early sexual debut) may not be unique to people living with mental illness but nonetheless the mental health care system can serve as an important point of entry for HIV prevention in this population.


Assuntos
Infecções por HIV/diagnóstico , Transtornos Mentais/complicações , Adolescente , Adulto , Brasil/epidemiologia , Estudos Transversais , Ensaio de Imunoadsorção Enzimática , Feminino , Infecções por HIV/epidemiologia , Infecções por HIV/prevenção & controle , Infecções por HIV/psicologia , Pessoas Mal Alojadas/psicologia , Pessoas Mal Alojadas/estatística & dados numéricos , Humanos , Masculino , Transtornos Mentais/psicologia , Pessoa de Meia-Idade , Razão de Chances , Prevalência , Análise de Regressão , Fatores de Risco , Autoimagem , Estudos Soroepidemiológicos , Comportamento Sexual , Fatores Socioeconômicos , Violência , Adulto Jovem
4.
Braz J Psychiatry ; 44(5): 517-521, 2022 Aug 29.
Artigo em Inglês | MEDLINE | ID: mdl-36423231

RESUMO

INTRODUCTION: Globally, depression rates are high among men who have sex with men (MSM). Multiple factors may interact synergistically to increase this risk. This analysis assessed the prevalence of symptoms of depression among MSM in Brazil and synergistic effects of several factors. METHODS: Cross-sectional study conducted in 12 cities using respondent-driven sampling. Sociodemographic and behavioral characteristics were collected. The PHQ-9 was used to screen for depression. Having moderate-severe depressive symptoms was compared to none-mild using logistic regression. The syndemic factor was a composite of hazardous alcohol use, sexual violence, and discrimination due to sexual orientation. Those with one to three of these factors were compared to those with none. RESULTS: The weighted prevalence of moderate-severe depressive symptoms was 24.9% (95%CI = 21.8-28.8) and 16.2%, 22.9%, 46.0% and 51.0% when none, one, two, or three syndemic factors were present, respectively, indicating a dose-response effect. Perception of HIV risk, high level of HIV knowledge, known HIV infection, and health self-rated as poor or very poor were also associated with depressive symptoms. CONCLUSION: The prevalence of moderate-severe depressive symptoms among MSM in Brazil is high, and selected factors act synergistically in increasing their prevalence. Public health policies should consider holistic depression prevention and treatment interventions for this population.


Assuntos
Infecções por HIV , Minorias Sexuais e de Gênero , Feminino , Humanos , Masculino , Sindemia , Homossexualidade Masculina , Estudos Transversais , Depressão/epidemiologia , Infecções por HIV/epidemiologia
5.
Braz J Psychiatry ; 42(4): 349-359, 2020 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31994641

RESUMO

OBJECTIVE: Human immunodeficiency virus (HIV) prevention efficacy trials with psychiatric patients have been conducted in research settings in high-resourced countries, establishing short-term efficacy for reducing sexual risk behavior. None has been implemented within systems of care. In the last decade, overcoming this research-to-practice gap has become a focus of implementation science. This paper describes the first and only HIV Prevention intervention trial for psychiatric patients conducted in real-world outpatient psychiatric settings facilitated by trained clinic-based providers. METHODS: The HIV Prevention intervention, which uses the Information-Motivation-Behavioral Skills model to achieve sexual risk-reduction, was rigorously adapted to the local context and clinic services' needs. Participants from eight clinics were randomized to HIV Prevention or Health Promotion conditions. RESULTS: HIV Prevention participants showed significant improvement in Information-Motivation-Behavioral domains; in this group, behavioral intentions were associated with significantly fewer unprotected sex occasions, but reduction of unprotected sex occasions was similar in both conditions. CONCLUSION: Our trial was conducted before implementation studies became widely funded. Transporting an intervention to a new culture or into real-world practice settings may require adaptations. Our results demonstrate that clear guidelines are needed regarding whether to conduct efficacy, effectiveness, and/or implementation research as the most appropriate next step. CLINICAL TRIAL REGISTRATION: NCT00881699.


Assuntos
Serviços Comunitários de Saúde Mental/organização & administração , Infecções por HIV/prevenção & controle , Saúde Mental , Pessoas Mentalmente Doentes/psicologia , Ensaios Clínicos Controlados Aleatórios como Assunto , Comportamento de Redução do Risco , Comportamento Sexual/psicologia , Feminino , Humanos , Masculino , Sexo sem Proteção
6.
BMC Med ; 7: 8, 2009 Mar 11.
Artigo em Inglês | MEDLINE | ID: mdl-19284575

RESUMO

BACKGROUND: Sexually transmitted infections constitute the main health risk among adolescents. In developing countries the diagnosis and treatment of cervical infections is based on the syndromic approach. In this study we estimated the prevalence of Chlamydia trachomatis and Neisseria gonorrhoeae among female adolescents from a Health Sector of the city of Goiânia, Brazil, and validated cervicitis diagnosis using World Health Organization/Ministry of Health risk score and gynecological examination. METHODS: A cross-sectional community-based sample of 914 15- to 19-year-old female teenagers was randomly selected and referred to the local Family Health Program. Of these, 472 (51.6%) were sexually active and gynecological examinations were carried out for 427. Endocervical samples were collected to perform the polymerase chain reaction for C. trachomatis and N. gonorrhoeae. Performance of risk score, the presence of mucopurulent discharge, friability, ectopia and pain during cervical maneuver were compared with the presence of C. trachomatis or N. gonorrhoeae or both. RESULTS: The prevalence of C. trachomatis and N. gonorrhoeae was 14.5% and 2.1%, respectively. The risk score had a specificity of 31.9% (95% confidence interval, 21.2 to 44.2) and a positive predictive value of 20.8% (95% confidence interval, 13.5 to 29.7). Friability was the component of the gynecological examination that presented the best performance with a sensitivity of 43.5%, specificity of 81.0%, and 30.6% of positive predictive value. CONCLUSION: The prevalence of infection by C. trachomatis and N. gonorrhoeae was high among these sexually active adolescents. The syndromic approach is clearly inadequate for screening and treating these infections in this population. Therefore, the implantation of other strategies to control these infections among adolescents is urgently required.


Assuntos
Chlamydia trachomatis/isolamento & purificação , Gonorreia/diagnóstico , Pesquisa sobre Serviços de Saúde , Linfogranuloma Venéreo/diagnóstico , Programas de Rastreamento/métodos , Neisseria gonorrhoeae/isolamento & purificação , Adolescente , Brasil , Estudos Transversais , Feminino , Gonorreia/patologia , Gonorreia/fisiopatologia , Humanos , Linfogranuloma Venéreo/patologia , Linfogranuloma Venéreo/fisiopatologia , Exame Físico , Reação em Cadeia da Polimerase/métodos , Valor Preditivo dos Testes , Prevalência , Medição de Risco , Sensibilidade e Especificidade , População Urbana , Adulto Jovem
7.
AIDS Behav ; 12(5): 741-7, 2008 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-18491224

RESUMO

A cross-sectional analysis was conducted to describe unsafe sexual practices among HIV-infected men under care in two Brazilian urban areas. Data were collected by face-to-face interviews. Twenty-five percent practiced unprotected sex in the previous year, 16% were abstinent, 33% had sex with men only, 45% with women only, 48% had male/female stable partners, 84% were on HAART and 48% had AIDS. Illicit drug use, number of female partners, having stable partners, and STD diagnosis were associated with unsafe sex. Interventions to reduce risk taking behavior among HIV-positive men under care in these settings are urgent, especially among heterosexual stable couples.


Assuntos
Terapia Antirretroviral de Alta Atividade , Infecções por HIV/epidemiologia , Assunção de Riscos , Comportamento Sexual/estatística & dados numéricos , Parceiros Sexuais , Adulto , Brasil/epidemiologia , Estudos Transversais , Feminino , Infecções por HIV/tratamento farmacológico , Infecções por HIV/transmissão , Heterossexualidade , Humanos , Masculino , Pessoa de Meia-Idade , Prevalência , Fatores de Risco , Infecções Sexualmente Transmissíveis/epidemiologia , Inquéritos e Questionários , Sexo sem Proteção/psicologia , Sexo sem Proteção/estatística & dados numéricos
8.
Cad Saude Publica ; 24(7): 1689-98, 2008 Jul.
Artigo em Português | MEDLINE | ID: mdl-18670692

RESUMO

The aim of this study was to develop a score to determine the level of understanding regarding information on antiretroviral therapy (ART) among patients initiating treatment. This was a cross-sectional analysis based on interviews with HIV patients in outpatient public referral centers (Belo Horizonte, Minas Gerais State, Brazil). The score for patients' understanding of their medicines was obtained using a latent trait model, estimated by the Item Response Theory, based on the concordance between each patient answer and the written prescription. Hierarchical linear regression was used to assess patients' global understanding of ART, considering each class of drugs (level 1) and the individual (level 2). Among 406 patients, 37.9% failed to reach a minimum level of understanding of their treatment. The item with the highest level of difficulty was "precaution in use". The item "dosage" showed the most varied understanding of ART. A high proportion of patients displayed minimal understanding of ART, indicating a high potential risk for non-adherence to therapy. It is thus necessary to identify factors associated with insufficient understanding of ART.


Assuntos
Fármacos Anti-HIV/uso terapêutico , Compreensão , Infecções por HIV/tratamento farmacológico , Adolescente , Adulto , Métodos Epidemiológicos , Feminino , Humanos , Masculino , Adulto Jovem
9.
Braz. J. Psychiatry (São Paulo, 1999, Impr.) ; 44(5): 517-521, Sept.-Oct. 2022. tab
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1403777

RESUMO

Introduction: Globally, depression rates are high among men who have sex with men (MSM). Multiple factors may interact synergistically to increase this risk. This analysis assessed the prevalence of symptoms of depression among MSM in Brazil and synergistic effects of several factors. Methods: Cross-sectional study conducted in 12 cities using respondent-driven sampling. Sociodemographic and behavioral characteristics were collected. The PHQ-9 was used to screen for depression. Having moderate-severe depressive symptoms was compared to none-mild using logistic regression. The syndemic factor was a composite of hazardous alcohol use, sexual violence, and discrimination due to sexual orientation. Those with one to three of these factors were compared to those with none. Results: The weighted prevalence of moderate-severe depressive symptoms was 24.9% (95%CI = 21.8-28.8) and 16.2%, 22.9%, 46.0% and 51.0% when none, one, two, or three syndemic factors were present, respectively, indicating a dose-response effect. Perception of HIV risk, high level of HIV knowledge, known HIV infection, and health self-rated as poor or very poor were also associated with depressive symptoms. Conclusion: The prevalence of moderate-severe depressive symptoms among MSM in Brazil is high, and selected factors act synergistically in increasing their prevalence. Public health policies should consider holistic depression prevention and treatment interventions for this population.

10.
AIDS ; 19 Suppl 4: S5-13, 2005 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-16249654

RESUMO

OBJECTIVE: To assess the incidence, magnitude and factors associated with the first episode of non-adherence for 12 months after the first antiretroviral prescription. DESIGN: A prospective study of HIV-infected patients receiving their first antiretroviral prescription in public referral centers, Belo Horizonte, Brazil. Baseline assessment occurred at the moment of the first prescription and follow-up visits at the first, fourth and seventh month, from May 2001 to May 2003. METHODS: Non-adherence was self-reported and defined as the intake of less than 95% of the prescribed doses for 3 days before the follow-up interviews. Cumulative and person-time incidence were estimated and Cox's proportional model was used to assess the relative hazard (RH) of non-adherence with 95% confidence interval for both univariate and multivariate analysis. RESULTS: Among 306 patients, the cumulative incidence of non-adherence was 36.9% (incidence rate 0.21/100 person-days). Multivariate analysis (P < 0.05) showed that unemployment (RH = 2.17), alcohol use (RH = 2.27), self-report of three or more adverse reactions (RH = 1.64), number of pills per day (RH = 2.04), switch in antiretroviral regimen (RH = 2.72), and a longer time between the HIV test result and the first antiretroviral prescription (RH = 2.27) were associated with an increased risk of non-adherence, whereas the use of more than one health service indicated a negative association (RH = 0.54). CONCLUSION: The current analysis has pointed out the importance of clinical and health service characteristics as potential indicators of non-adherence after initiating therapy. Early assessment and intervention strategies should be priorities in these AIDS public referral centres. Feasible and reliable indicators for the routine monitoring of adherence should be incorporated in clinical practice.


Assuntos
Fármacos Anti-HIV/administração & dosagem , Infecções por HIV/tratamento farmacológico , Cooperação do Paciente/estatística & dados numéricos , Adulto , Consumo de Bebidas Alcoólicas/psicologia , Fármacos Anti-HIV/efeitos adversos , Terapia Antirretroviral de Alta Atividade/psicologia , Métodos Epidemiológicos , Feminino , Serviços de Saúde/estatística & dados numéricos , Humanos , Masculino , Resultado do Tratamento , Desemprego/psicologia
12.
Braz. J. Psychiatry (São Paulo, 1999, Impr.) ; 42(4): 349-359, July-Aug. 2020. tab, graf
Artigo em Inglês | LILACS | ID: biblio-1132089

RESUMO

Objective: Human immunodeficiency virus (HIV) prevention efficacy trials with psychiatric patients have been conducted in research settings in high-resourced countries, establishing short-term efficacy for reducing sexual risk behavior. None has been implemented within systems of care. In the last decade, overcoming this research-to-practice gap has become a focus of implementation science. This paper describes the first and only HIV Prevention intervention trial for psychiatric patients conducted in real-world outpatient psychiatric settings facilitated by trained clinic-based providers. Methods: The HIV Prevention intervention, which uses the Information-Motivation-Behavioral Skills model to achieve sexual risk-reduction, was rigorously adapted to the local context and clinic services' needs. Participants from eight clinics were randomized to HIV Prevention or Health Promotion conditions. Results: HIV Prevention participants showed significant improvement in Information-Motivation-Behavioral domains; in this group, behavioral intentions were associated with significantly fewer unprotected sex occasions, but reduction of unprotected sex occasions was similar in both conditions. Conclusion: Our trial was conducted before implementation studies became widely funded. Transporting an intervention to a new culture or into real-world practice settings may require adaptations. Our results demonstrate that clear guidelines are needed regarding whether to conduct efficacy, effectiveness, and/or implementation research as the most appropriate next step. Clinical trial registration: NCT00881699


Assuntos
Humanos , Masculino , Feminino , Comportamento Sexual/psicologia , Infecções por HIV/prevenção & controle , Ensaios Clínicos Controlados Aleatórios como Assunto , Saúde Mental , Serviços Comunitários de Saúde Mental/organização & administração , Pessoas Mentalmente Doentes/psicologia , Comportamento de Redução do Risco , Sexo sem Proteção
13.
Cad Saude Publica ; 20(5): 1388-97, 2004.
Artigo em Português | MEDLINE | ID: mdl-15486683

RESUMO

To assess the understanding of information related to antiretroviral therapy among HIV-infected patients enrolled in public AIDS services (Belo Horizonte, Minas Gerais State, Brazil), a cross-sectional analysis was carried out, based on interviews with patients after initial provision of antiretroviral drugs. The study evaluated the information on antiretroviral therapy provided by healthcare professionals and the patients' level of understanding in relation to prescription information. This level was classified as insufficient if there was disagreement of more than 30.0% between the information reported by the patient and the written prescription. Divergence between prescriptions and information reported by 358 interviewed patients was observed. The level of understanding regarding the prescribed antiretroviral was obtained, and 26.3% of patients displayed insufficient understanding. The results show an important proportion of patients with misunderstanding of information regarding antiretroviral therapy, mainly those with limited schooling and low income. It is necessary to bolster strategies to increase quality of recommendations provided to these patients. Improving the multidisciplinary team approach to patient care should help reverse the observed situation.


Assuntos
Fármacos Anti-HIV/uso terapêutico , Compreensão , Infecções por HIV/tratamento farmacológico , Cooperação do Paciente , Estudos Transversais , Escolaridade , Feminino , Humanos , Entrevistas como Assunto , Masculino , Educação de Pacientes como Assunto , Estudos Prospectivos
14.
Rev Saude Publica ; 37(2): 183-90, 2003 Apr.
Artigo em Português | MEDLINE | ID: mdl-12700839

RESUMO

OBJECTIVE: To determine factors associated with the interruption of outpatient care of HIV-positive patients. METHODS: Non-concurrent prospective study carried out in a public AIDS referral center in Belo Horizonte, Brazil. Medical records were reviewed in order to assess factors associated with the interruption of clinical care of HIV patients admitted between 1993 and 1995. Patients should have attended at least one follow-up visit within a period of 7 months. Statistical analysis was carried out using Chi-square and relative hazard (RH) with 95% confidence interval (CI) estimated by Cox Regression Model. RESULTS: Cumulative incidence of interruption was 54% among 517 patients included in the study (mean follow-up=24.6 months; 26.5/100 person-years). Multivariate analysis indicated that those individuals who had fewer (<2) CD4+ T lymphocyte cell counts (RH=1.94; 95% CI=1.32-2.84) did not have viral load measured (RH=14.94; IC 95%=5.44-41.04), attended <7 medical follow-up visits (RH =2.80; IC 95%=1.89-4.14), did not change clinical category (RH =1.40; IC 95% =1.00-1.93) and did not undergo any anti-retroviral therapy (RH =1.43; IC 95% =1.06-1.93) had independently an increased risk of interrupting clinical care. CONCLUSIONS: The rate of clinical interruption in this center is high. The results suggest that interruption may be a function of better clinical outcome, i.e. the service may give priority to those patients with more severe clinical condition, and interruption of clinical care may be a marker for future antiretroviral compliance.


Assuntos
Instituições de Assistência Ambulatorial/estatística & dados numéricos , Infecções por HIV/terapia , Visita a Consultório Médico/estatística & dados numéricos , Pacientes Desistentes do Tratamento/estatística & dados numéricos , Recusa do Paciente ao Tratamento/estatística & dados numéricos , Adulto , Métodos Epidemiológicos , Feminino , Necessidades e Demandas de Serviços de Saúde , Humanos , Masculino , Estudos Prospectivos , Fatores Sexuais , Fatores de Tempo
15.
J HIV AIDS Soc Serv ; 13(4): 451-472, 2014 Oct 02.
Artigo em Inglês | MEDLINE | ID: mdl-25530731

RESUMO

HIV infection among young populations is increasing worldwide. Adolescents in mental health treatment have demonstrated higher rates of HIV risk behavior than their peers. This first risk behavior study of youth in psychiatric treatment in Brazil reports findings from a cross-sectional national sample of emerging adult psychiatric patients (18-25 years old). The prevalence of lifetime unprotected sex was 65.9%. Multiple logistic regression indicated that being married/in union; sex under the influence of alcohol/drugs; physical violence; earlier sexual debut; and depressive/substance use disorders were associated with unsafe sex. Interventions and services that address these risks during this critical developmental window are urgently needed.

16.
AIDS Res Hum Retroviruses ; 29(12): 1553-61, 2013 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-23987184

RESUMO

HIV-1 molecular epidemiology studies carried out in Rio de Janeiro, Brazil have identified the prevalence of subtypes B, F1 and BF1 recombinants. A high percentage of HIV-1 subtype B isolates in Rio de Janeiro harbor the GWG motif at the V3 tip (B'' variant) instead of the canonical GPG motif (B variant). To trace the dynamics of the HIV-1 variants over time in different exposure categories in Rio de Janeiro, the HIV-1 proviral DNA from heterosexual men (HET) and men who have sex with men (MSM) from two distinct time periods (1990-1992 and 2008-2010) were extracted, and the env-gp120 region was amplified. Neighbor-joining phylogenetic analysis was performed to determine the viral subtype, and Bayesian analysis was used to trace the HIV-1 transmission networks. A predominance of subtype B was observed in both study periods, independent of the exposure risk category. An increase of non-B subtypes was observed in the HET group, but these subtypes were maintained among the MSM group. The distribution of HIV-1 subtype B signatures in the first and second periods studied were, respectively, HET (GPG) [44.8-51.5%], (GWG) [13.8-33.3%], and (GXG) [41.4-15.2%] and MSM (GPG) [34-50%], (GWG) [55.3-30.6%], and (GXG) [10.7-19.4%]. In the first period, an association between GWG and MSM was verified while a significant reduction of this association was observed during the second period. The phylogenetic tree and the BaTS program detected the clustering of isolates only according to the B signatures but not by exposure risk category. Our findings indicate a stable prevalence of HIV-1 subtypes B and F over time in Rio de Janeiro and further suggest that the B'' subclade of subtype B was possibly introduced into the MSM group in this area of Brazil.


Assuntos
Infecções por HIV/epidemiologia , Epidemiologia Molecular , Adulto , Idoso , Teorema de Bayes , Brasil/epidemiologia , Infecções por HIV/genética , HIV-1 , Humanos , Pessoa de Meia-Idade , Dados de Sequência Molecular , Filogenia , Adulto Jovem
17.
AIDS ; 27(3): 427-35, 2013 Jan 28.
Artigo em Inglês | MEDLINE | ID: mdl-23291540

RESUMO

OBJECTIVE: To conduct the first national biological and behavioral surveillance survey for HIV among MSM in Brazil. DESIGN: A cross-sectional surveillance study utilizing Respondent Driven Sampling (RDS) in 10 cities, following formative research. Planned sample: 350 MSM reporting sex with another man in the last 12 months, at least 18 years of age, and residing in the city of the study. METHODS: Conventional RDS recruitment. Results were calculated for each city using RDSAT 5.6. For the national estimate, a new individual weight using a novel method was calculated. The 10 cities were aggregated, treated as strata and analyzed using STATA11.0. Self-reported HIV status and logistic regression was used to impute missing values for serostatus, an important issue for RDSAT. RESULTS: A total of 3859 MSM were interviewed. Sample was diverse, most self-identified as mulatto or black, were social class C or below, and had relatively low levels of education. More than 80% reported more than one partner in the last 6 months. Only 49% had ever tested for HIV. HIV prevalence among MSM ranged from 5.2 to 23.7% in the 10 cities (3.7-16.5% without imputation) and was 14.2% for all cities combined with imputation. The overall prevalence was two and three times higher than that estimated for female sex workers and drug users, respectively, in Brazil. Half of those who tested HIV positive were not aware of their infection. CONCLUSION: The AIDS epidemic in Brazil is disproportionately concentrated among MSM, as has been found in other countries. Renewed efforts to encourage testing, prevention and treatment are required.


Assuntos
Soropositividade para HIV/epidemiologia , Homossexualidade Masculina , Vigilância de Evento Sentinela , Comportamento Sexual/estatística & dados numéricos , Adolescente , Adulto , Brasil/epidemiologia , Estudos Transversais , Conhecimentos, Atitudes e Prática em Saúde , Inquéritos Epidemiológicos , Humanos , Modelos Logísticos , Masculino , Prevalência , Fatores de Risco , Assunção de Riscos , Estudos de Amostragem , Parceiros Sexuais , Sexo sem Proteção , Adulto Jovem
19.
Braz J Infect Dis ; 12(3): 173-9, 2008 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-18833399

RESUMO

The potential impact of the hepatitis C virus (HCV) on clinical, immunological and virological responses to initial highly active antiretroviral therapy (HAART) of patients infected with human immunodeficiency virus (HIV) is important to evaluate due to the high prevalence of HIV-HCV coinfection. A historical cohort study was conducted among 824 HIV-infected patients starting HAART at a public referral service in Belo Horizonte, Brazil, to assess the impact of HCV seropositivity on appearance of a new AIDS-defining opportunistic illness, AIDS-related death, suppression of viral load, and an increase in CD4-cell count. A total of 76 patients (9.2%) had a positive HCV test, 26 of whom (34.2%) had a history of intravenous drug use. In multivariate analysis, HCV seropositivity was associated with a smaller CD4-cell recovery (RH=0.68; 95% CI [0.49-0.92], but not with progression to a new AIDS-defining opportunistic illness or to AIDS-related death (RH=1.08; 95% CI [0.66-1.77]), nor to suppression of HIV-1 viral load (RH=0.81; 95% CI [0.56-1.17]) after starting HAART. These results indicate that although associated with a blunted CD4-cell recovery, HCV coinfection did not affect the morbidity or mortality related to AIDS or the virological response to initial HAART.


Assuntos
Terapia Antirretroviral de Alta Atividade , Infecções por HIV , HIV-1 , Hepatite C/complicações , Adulto , Contagem de Linfócito CD4 , Estudos de Coortes , Feminino , Seguimentos , Infecções por HIV/complicações , Infecções por HIV/tratamento farmacológico , Infecções por HIV/imunologia , Infecções por HIV/virologia , HIV-1/imunologia , Hepatite C/diagnóstico , Hepatite C/imunologia , Anticorpos Anti-Hepatite C/sangue , Humanos , Masculino , RNA Viral/sangue , Estudos Retrospectivos , Carga Viral
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA