Factors associated with loss to follow up among HIV-exposed children: a historical cohort study from 2000 to 2017, in Porto Alegre, Brazil.

BACKGROUND: There are many inequalities in terms of prevention and treatment for pregnant women with HIV and exposed children in low and middle-income countries. The Brazilian protocol for prenatal care includes rapid diagnostic testing for HIV, compulsory notification, and monitoring by the epidemiological surveillance of children exposed to HIV until 18 months after delivery. The case is closed after HIV serology results are obtained. Lost to follow-up is defined as a child who was not located at the end of the case, and, therefore, did not have a laboratory diagnosis. Lost to follow-up is a current problem and has been documented in other countries. This study analyzed factors associated with loss to follow-up among HIV-exposed children, including sociodemographic, behavioral, and health variables of mothers of children lost to follow-up. METHODS: This historical cohort study included information on mothers of children exposed to HIV, born in Porto Alegre, from 2000 to 2017. The research outcome was the classification at the end of the child's follow-up (lost to follow-up or not). Factors associated with loss to follow-up were investigated using the Poisson regression model. Relative Risk calculations were performed. The significance level of 5% was adopted for variables in the adjusted model. RESULTS: Of 6,836 children exposed to HIV, 1,763 (25.8%) were classified as lost to follow-up. The factors associated were: maternal age of up to 22 years (aRR 1.25, 95% CI: 1.09-1.43), the mother's self-declared race/color being black or mixed (aRR 1.13, 95% CI: 1.03-1.25), up to three years of schooling (aRR 1.45, 95% CI: 1.26-1.67), between four and seven years of schooling (aRR 1.14, 95% CI: 1.02-1.28), intravenous drug use (aRR 1.29, 95% CI: 1.12-1.50), and HIV diagnosis during prenatal care or at delivery (aRR 1.37, 95% CI: 1.24-1.52). CONCLUSION: Variables related to individual vulnerability, such as race, age, schooling, and variables related to social and programmatic vulnerability, remain central to reducing loss to follow-up among HIV-exposed children.

Preferences for pre-exposure prophylaxis (PrEP) among men who have sex with men and transgender women at risk of HIV infection: a multicentre protocol for a discrete choice experiment in Brazil.

INTRODUCTION: Pre-exposure prophylaxis (PrEP) is an important and well-established prevention strategy for sexual acquisition of HIV. In Brazil, transgender women (TGW) and men who have sex with men (MSM) bear the largest burden among key populations. Little is known about preferences for PrEP characteristics in these vulnerable populations in Latin America. The goal of this study is to investigate preferences of TGW and MSM with respect to PrEP characteristics, whether current user or not, and to assess any attributes and levels that may improve the decision to start using PrEP (uptake) and optimal continuity of use (adherence), which are important dimensions for PrEP success. METHODS AND ANALYSIS: We hereby outline the protocol of a discrete choice experiment (DCE) to be conducted among TGW and MSM in Brazil. The study will be carried out in two phases. The first phase involves literature review and qualitative approaches including in-depth interviews to inform the development of the DCE (attributes and levels). The second phase entails the DCE survey and supporting questions pertaining to sociodemographic and risk behaviour information. The survey is aimed at current PrEP users and non-users, consisting of two modes of administration: face to face in five Brazilian capitals (Rio de Janeiro, Brasília, Manaus, Porto Alegre and Salvador) and online targeting the entire country. A D-efficient zero-prior blocked experimental design will be used to select 60 paired-profile DCE choice tasks, in which participants will be randomly assigned to one of four groups and presented with a set of 15 choice tasks. The planned sample size is 1000 volunteers. ETHICS, TIMELINE AND DISSEMINATION: The study was approved by Comitê de Ética em Pesquisa-Instituto Nacional de Infectologia Evandro Chagas-INI/FIOCRUZ, CEP/INI, CAAE 28416220.2.1001.5262, approval number 3.979.759 in accordance with the Comissão Nacional de Ética em Pesquisa (CONEP-Brazilian National Board of Research Ethics). The study will be conducted between 2020 and 2021. The results will be disseminated to the scientific community and to the public in general through publications in published in peer-reviewed journals and in scientific conferences.

Factors associated with directly observed treatment in tuberculosis/HIV coinfection cases in Porto Alegre, 2009-2013: A retrospective cohort.

BACKGROUND: TB/HIV coinfection is a serious public health issue in Brazil, and patients with coinfection have difficulty adhering to treatments. Directly observed treatment (DOT) has been recommended by the World Health Organization, considering the vulnerability of those affected. The purpose is to investigate the occurrence of DOT and associated factors compared to conventional treatment in Porto Alegre, Brazil. METHODS: A retrospective cohort study was carried out with all patients with coinfection from 2009 to 2013 in the city of Porto Alegre, Brazil, the state capital with the highest rate of coinfection in Brazil. The data came from national health information systems. The dependent variable was the performance of DOT. Bivariate and multivariable models were used to determine factors associated with DOT. The percentage of cure and death was verified in a period of two years, comparing patients who received and did not receive DOT. RESULTS: 2,400 cases of coinfection were reported, with 1,574 males and 826 females and a mean age of 38 years ± 9.91 years. The occurrence of DOT was 16.9%. In the multivariable analysis, factors independently associated to DOT were the year (with greater chances of being received in 2012 and 2013), place of origin, non-white race (OR = 1.29, 95% CI = 1.08-1.54), cases of relapse (OR = 1.33; 95% CI = 1.03-1.73), readmission after abandonment (OR = 1.48, 95% CI = 1.20-1.83), transfer (OR = 2.04; 95% CI = 1.40-2.98), acid-fast bacilli (AFB) test with positive result in first sample (OR = 1.73, 95% CI = 1.24-2.42), alcohol abuse (OR = 1.39; 95% CI = 1.16-1.67), and mental disorders (OR = 1.83; 95% CI = 1.38-2.44.) Of the 532 cases of death, occurring in two years, 10.2% were in patients who underwent DOT and 89.8% in patients who did not undergo DOT (p<0.001). O percentual de óbitos em pessoas que receberam DOT foi de 13% e o percentual de óbitos para pessoas que receberam tratamento convencional foi de 24%. CONCLUSIONS: There was an increase in the percentage of DOT over the years in the scenario studied, and the predictors for DOT were related to social vulnerability. In relation to death within two years, a lower proportion was found in patients who underwent DOT, suggesting a protective effect of the strategy.

Squamous intraepithelial lesions in HIV-infected women: prevalence, incidence, progression and regression.

PURPOSE: To evaluate the impact of HIV immune depletion, highly active antiretroviral therapy (HAART) and patient characteristics on the occurrence of cervical squamous intraepithelial lesions (SIL). METHODS: A total of 898 HIV-positive women were evaluated at the time of their first Pap smear and 388 of them received additional Pap smears during follow-up in a cohort study. The patients were enrolled from July 1997 to April 2007. Prevalence and incidence of SIL in Pap smears were studied. Progression and regression were evaluated in follow-up of patients presenting low-grade SIL. RESULTS: Pap smear results at baseline were: 741 normal (82.5 %), 56 atypical squamous cells of indeterminate significance (ASCUS) (6.2 %), 78 low-grade SIL (8.7 %), 22 high-grade SIL (2.4 %), and 1 invasive cervical cancer (0.1 %). SIL cumulative incidence rate was 9.7 %. Progression and regression occurred in 15.9 and 62 %, respectively. Multivariate analysis of CD4 counts ≤ 200 cells/mm(3) (aHR = 2.1; 95 % CI 1.3-3.5; P = 0.004) and age less than 30 years (aHR = 3.2; 95 % CI 1.5-6.8; P = 0.01) or less than 40 years old (aHR = 2.6; 95 % CI 1.2-5.7; P = 0.01) were significantly associated with SIL prevalence. CD4 counts ≤ 200 cells/mm(3) (aHR = 3.0; 95 % CI 1.2-7.2; P = 0.01) and higher viral load counts (for each log increase) were associated with SIL incidence (aHR = 1.4; 95 % CI 1-1.9; P = 0.048). CONCLUSIONS: Prevalence and incidence of SIL in HIV-positive women were associated with severity of HIV disease. Interventions to increase access to Pap smears and further diagnostic tests should be implemented and targeted to HIV-positive women.