The Experts below are selected from a list of 16971 Experts worldwide ranked by ideXlab platform
Gabriela Paz-bailey - One of the best experts on this subject based on the ideXlab platform.
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Distributive Syringe Sharing and Use of Syringe Services Programs (SSPs) Among Persons Who Inject Drugs
AIDS and Behavior, 2019Co-Authors: Monica Adams, Dita Broz, Janet Burnett, Qian An, Cyprian Wejnert, Gabriela Paz-baileyAbstract:Monitoring distributive syringe sharing (DSS) and syringe services program (SSP) use among persons who inject drugs (PWID) is important for HIV prevention. PWID aged ≥ 18 in 20 US cities were recruited for National HIV Behavioral Surveillance in 2015 using respondent-driven sampling, interviewed and offered HIV testing. Bivariate and multivariable analyses via log-linked Poisson regression with generalized estimating equations were conducted to examine associations between demographic and Behavioral variables and DSS. Effect of SSP use on DSS by HIV sero-status was assessed by including an interaction between SSP and sero-status. Analyses were adjusted for sampling design. Among 10,402 PWID, 42% reported DSS. DSS was less likely to be reported among HIV-positive compared to HIV-negative PWID (aPR = 0.51, CI 0.45–0.60), and among those who primarily obtained syringes from SSPs versus those who did not (aPR = 0.82, 95% CI 0.77–0.88). After adjustment, those who primarily used SSPs were less likely to report DSS than those who did not among both HIV-negative PWID (aPR = 0.84, 95% CI 0.78–0.90) and HIV-positive PWID (aPR = 0.54, 95% CI 0.39–0.75). Findings support expansion of SSPs, and referrals to SSPs by providers working with PWID.
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Undisclosed HIV infection among MSM in a Behavioral Surveillance study.
AIDS (London England), 2019Co-Authors: Brooke E. Hoots, Cyprian Wejnert, Amy B. Martin, Richard E. Haaland, Silvina Masciotra, Catlainn Sionean, Amanda Smith, William M. Switzer, Gabriela Paz-baileyAbstract:Objective:As a proxy for undiagnosed HIV, the Centers for Disease Control and Prevention's National HIV Behavioral Surveillance (NHBS) monitors participants who report being unaware of their infection, defined as self-reporting an HIV-negative or unknown status during the interview but testing posit
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Characteristics of Persons Who Inject Drugs with Recent HIV Infection in the United States: National HIV Behavioral Surveillance, 2012.
AIDS and behavior, 2019Co-Authors: Johanna Chapin-bardales, Brooke E. Hoots, Silvina Masciotra, Amanda Smith, William M. Switzer, Amy Martin, Wei Luo, Sherry M. Owen, Gabriela Paz-baileyAbstract:We evaluated characteristics associated with recent HIV infection among persons who inject drugs (PWID) from 19 U.S. cities who participated in 2012 National HIV Behavioral Surveillance. Recent infection was defined as having a reactive HIV test, a Bio-Rad Avidity index cutoff ≤ 30%, no reported HIV diagnosis ≥ 12 months before interview, and no evidence of viral suppression. Of 8667 PWID, 50 (0.6%) were recently HIV infected. Having a greater number of sex partners (≥ 2 partners vs. 0) [prevalence ratio (PR) 4.7, 95% confidence interval (CI) 1.3–17.8], injecting heroin and other drugs (PR 3.0, 95% CI 1.3–6.6) or exclusively non-heroin drugs (PR 5.9, 95% CI 1.7–20.7) compared to injecting only heroin, and having male–male sex in the past year (PR 7.1, 95% CI 3.0–16.6) were associated with recent infection. Promoting not only safe injection practices but also safe sex practices will be key to preventing new HIV infections.
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Achieving Greater HIV Prevention Impact Through CDC's National HIV Behavioral Surveillance System.
Journal of acquired immune deficiency syndromes (1999), 2017Co-Authors: Cyprian Wejnert, Henry Fisher Raymond, Taylor Robbins, Joseph Prejean, H Irene Hall, Eugene Mccray, Gabriela Paz-baileyAbstract:The National HIV Behavioral Surveillance system was designed to monitor risk factors for HIV infection and HIV prevalence among individuals at higher risk for HIV infection, that is, sexually active men who have sex with men who attend venues, persons who recently injected drugs, and heterosexuals of low socioeconomic status living in urban areas. These groups were selected as priorities for Behavioral Surveillance because they represent the major HIV transmission routes and the populations with the highest HIV burden. Accurate data on the behaviors in these populations are critical for understanding trends in HIV infections and planning and evaluating effective HIV prevention activities. The articles in this supplement illustrate how National HIV Behavioral Surveillance data can be used to assess HIV risk behaviors, prevalence, and service utilization of the populations most affected by HIV in the United States and guide local and national high-impact prevention strategies to meet national HIV prevention goals.
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Association Between Enacted Stigma and HIV-Related Risk Behavior Among MSM, National HIV Behavioral Surveillance System, 2011
AIDS and behavior, 2016Co-Authors: Alexandra B. Balaji, Kristina E. Bowles, Kristen L. Hess, Justin C. Smith, Gabriela Paz-baileyAbstract:MSM bear a disproportionate burden of the HIV epidemic. Enacted stigma (overt negative actions) against sexual minorities may play an important role in increasing HIV risk among this population. Using data from the 2011 National HIV Behavioral Surveillance system, MSM cycle, we examined the independent associations between three measures of enacted stigma (verbal harassment, discrimination, physical assault) and engagement in each of four HIV-related risk behaviors as outcomes: condomless anal intercourse (CAI) at last sex with a male partner of HIV discordant or unknown status and, in the past 12 months, CAI with a male partner, ≥4 male sex partners, and exchange sex. Of 9819 MSM, 32% experienced verbal harassment in the past 12 months, 23% experienced discrimination, and 8% experienced physical assault. Discordant CAI at last sex with a male partner was associated with previous discrimination and physical assault. Past 12 month CAI with a male partner, ≥4 male sex partners, and exchange sex were each associated with verbal harassment, discrimination, and physical assault. These findings indicate that a sizable proportion of MSM report occurrences of past 12 month enacted stigma and suggest that these experiences may be associated with HIV-related risk behavior. Addressing stigma towards sexual minorities must involve an integrated, multi-faceted approach, including interventions at the individual, community, and societal level.
Amy Lansky - One of the best experts on this subject based on the ideXlab platform.
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Using the National HIV Behavioral Surveillance System to Inform HIV Prevention Efforts in the United States
AIDS and Behavior, 2014Co-Authors: Gabriela Paz-bailey, Amy Lansky, H. Fisher Raymond, Jonathan MerminAbstract:The National HIV Behavioral Surveillance system (NHBS) was designed to monitor HIV prevalence and risk factors for infection among higher-risk individuals, i.e., sexually active men who have sex with men who attend venues, injection drug users who injected in the past 12 months, and heterosexuals living in low socioeconomic urban areas. These groups were selected as priorities for Behavioral Surveillance since they represent the major HIV transmission routes and the populations with the highest HIV burden. NHBS contributes to the nation’s program of HIV Surveillance by being the only multi-site population-based system that provides estimates on key HIV prevention measures among high-risk HIV-negative individuals, HIV-positive individuals unaware of their infection, and HIV-positive individuals aware of their infection who are in and out of care. Accurate and precise data on the behaviors in these populations are critical for tracking the epidemic, planning effective responses, and monitoring and evaluating those responses. Reports in this supplement illustrate the uses of NHBS data at the national and local level and reflect ongoing efforts to improve the system and methods. As we look to the future, Behavioral Surveillance remains essential for characterizing and monitoring the burden of HIV infection and sexual and Behavioral risks.
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Using the National HIV Behavioral Surveillance System to inform HIV prevention efforts in the United States.
AIDS and behavior, 2014Co-Authors: Gabriela Paz-bailey, Amy Lansky, H. Fisher Raymond, Jonathan MerminAbstract:The National HIV Behavioral Surveillance system (NHBS) was designed to monitor HIV prevalence and risk factors for infection among higher-risk individuals, i.e., sexually active men who have sex with men who attend venues, injection drug users who injected in the past 12 months, and heterosexuals living in low socioeconomic urban areas. These groups were selected as priorities for Behavioral Surveillance since they represent the major HIV transmission routes and the populations with the highest HIV burden. NHBS contributes to the nation's program of HIV Surveillance by being the only multi-site population-based system that provides estimates on key HIV prevention measures among high-risk HIV-negative individuals, HIV-positive individuals unaware of their infection, and HIV-positive individuals aware of their infection who are in and out of care. Accurate and precise data on the behaviors in these populations are critical for tracking the epidemic, planning effective responses, and monitoring and evaluating those responses. Reports in this supplement illustrate the uses of NHBS data at the national and local level and reflect ongoing efforts to improve the system and remains essential for characterizing and monitoring the burden of HIV infection and sexual and Behavioral risks.
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Developing a Web-Based HIV Behavioral Surveillance Pilot Project Among Men Who Have Sex with Men.
The open AIDS journal, 2012Co-Authors: Travis Sanchez, Amanda Smith, Elizabeth Dinenno, Damian Denson, Amy LanskyAbstract:Background: A web-based HIV Behavioral Surveillance system (WHBS) has potential to collect Behavioral data from men who have sex with men (MSM) not reached through traditional sampling methods. Six U.S. cities conducted a WHBS pilot in 2005-2007 to determine the feasibility to conduct a Behavioral Surveillance project entirely on the internet. Methods: Three sampling methods of adult MSM on the internet were explored: direct marketing (DM) using banner advertisements; respondent-driven sampling (RDS) using peer recruitment; and venue-based sampling (VBS) using internet venues. Results: A total of 8,434 complete MSM surveys were obtained: 8,109 through DM, 130 through RDS, and 195 through VBS. By methods, enrollment rates ranged from 70-90%; completion rates ranged from 67-95%. DM obtained the largest proportions of racial/ethnic minority MSM (36%) and MSM 18-20 years (19%). Conclusions: Only the DM method achieved a substantial number of complete MSM surveys. Successful implementation of an internet-based systematic sampling method may be problematic, but a convenience sample of MSM using banner advertisements is feasible and may produce useful and timely Behavioral information from a large number of MSM.
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Assessing the assumptions of respondent-driven sampling in the national HIV Behavioral Surveillance System among injecting drug users.
The open AIDS journal, 2012Co-Authors: Amy Lansky, Cyprian Wejnert, Melissa Cribbin, Amy Drake, Huong Pham, Douglas D. HeckathornAbstract:Several assumptions determine whether respondent-driven sampling (RDS) is an appropriate sampling method to use with a particular group, including the population being recruited must know one another as members of the group (i.e., injection drug users (IDUs) must know each other as IDUs) and be networked and that the sample size is small relative to the overall size of the group. To assess these three assumptions, we analyzed city-specific data collected using RDS through the US National HIV Behavioral Surveillance System among IDUs in 23 cities. Overall, 5% of non-seed participants reported that their recruiter was "a stranger." 20 cities with multiple field sites had >1 cross-recruitment, a proxy for linked networks. Sample sizes were small in relation to the IDU population size (median = 2.3%; range: 0.6%- 8.0%). Researchers must evaluate whether these three assumptions were met to justify the basis for using RDS to sample specific populations.
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Piloting a System for Behavioral Surveillance Among Heterosexuals at Increased Risk of HIV in the United States
The open AIDS journal, 2012Co-Authors: Elizabeth Dinenno, Catlainn Sionean, Alexandra M. Oster, Paul Denning, Amy LanskyAbstract:Objectives: During the past decade, the number and proportion of reported HIV cases in the United States acquired through heterosexual contact has increased markedly. CDC employs the National HIV Behavioral Surveillance System (NHBS) to monitor risk behaviors and HIV prevalence in high-risk populations. To identify a target population for conducting NHBS among heterosexuals at increased risk for HIV (NHBS-HET), CDC designed, implemented and evaluated a pilot study. Methods: The pilot study was conducted in 25 US metropolitan statistical areas in 2006-7. We recruited men and women who reported sex with at least one opposite-sex partner during the past year for a Behavioral survey and HIV test. We investigated the relationship between newly diagnosed HIV infection and individual risk behaviors, sexual network characteristics, and social-structural characteristics to arrive at a definition of a heterosexual at increased risk of HIV. Results: Of 14,750 participants in the analysis, 207 (1.4%) had newly diagnosed HIV infection. Using low socio- economic status (SES) as a criterion for defining a heterosexual at increased risk for HIV resulted in optimal rates of HIV prevalence, specificity, sensitivity and practicality. Conclusions: Results from the NHBS pilot study underscore the key role of social factors as determinants of HIV infection risk among U.S. heterosexuals, and low SES was incorporated into the definition of a heterosexual at increased risk for HIV in NHBS-HET cycles. Future cycles of NHBS-HET will help tailor prevention programs for those populations most at risk of HIV in the US.
Cyprian Wejnert - One of the best experts on this subject based on the ideXlab platform.
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Assessment of PrEP Awareness, PrEP Discussion with a Provider, and PrEP Use by Transmission Risk Group with an Emphasis on the Southern United States
AIDS and Behavior, 2021Co-Authors: Jamal T. Jones, Teresa Finlayson, Dawn K. Smith, Jeffrey Wiener, Euna M. August, Cyprian WejnertAbstract:The number of new HIV diagnoses is highest in the South. Many persons who might benefit from pre-exposure prophylaxis (PrEP) are not engaged in the HIV PrEP continuum of care. We analyzed National HIV Behavioral Surveillance data to assess engagement in the PrEP continuum of care among persons with increased HIV risk. We compared PrEP awareness, discussion with a clinical provider, and use among persons living in the South to those living elsewhere in the United States. PrEP awareness was lowest among heterosexual persons (7%), highest among men who have sex with men (85%), and 26% among persons who inject drugs. PrEP use was low among each population (≤ 35% for all cycles). There was limited evidence of differences in PrEP use between persons in southern and non-southern U.S. Efforts are needed to increase use of PrEP among each of the groups with increased HIV risk. El número de nuevos diagnósticos de virus de la inmunodeficiencia humana (VIH) es más alto en el sur. Muchas personas que podrían beneficiarse de la profilaxis preexposición (PrEP) no participan en la VIH-PrEP continuidad de la atención. Analizamos datos del Sistema Nacional de Vigilancia del Comportamiento Relacionado con el VIH (conocido en inglés como National HIV Behavioral Surveillance System) para evaluar la participación en la PrEP continuidad de la atención en personas con mayor riesgo de contraer el VIH. Comparamos concientización de PrEP, discusión con un proveedor clínico, y uso entre personas que viven en el sur con las personas que viven en otras partes de los Estados Unidos. Concientización de PrEP fue más baja entre personas heterosexuales (7%), más alta entre hombres que tienen relaciones sexuales con hombres (91%), y 26% entre personas que se inyectan drogas. Utilización de PrEP fue baja para todas las poblaciones (≤35% para todos los ciclos). La evidencia de diferencias en el uso de PrEP entre personas que viven en el sur con personas que no viven en el sur de los Estados Unidos fue limitada. Se necesitan esfuerzos para aumentar el uso de PrEP entre estos grupos con más riesgo de contraer el VIH.
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Human papillomavirus vaccination coverage among men who have sex with men-National HIV Behavioral Surveillance, United States, 2017.
Vaccine, 2020Co-Authors: Nancy Mcclung, Janet Burnett, Cyprian Wejnert, Lauri E. Markowitz, Elissa MeitesAbstract:Abstract Men who have sex with men (MSM) are at high risk for infections and diseases caused by human papillomavirus (HPV), many of which are vaccine-preventable. In the United States, routine HPV vaccination has been recommended for adolescent males since 2011. This analysis evaluated self-reported receipt of ≥ 1 HPV vaccine dose by age group and HIV status among adult MSM using 2017 data from National HIV Behavioral Surveillance (NHBS) and compared the proportion vaccinated to prior years. Among 10,381 MSM aged ≥ 18 years, 17.9% of MSM overall and 28.4% of MSM living with HIV reported any HPV vaccination. Among 2,482 MSM aged 18–26 years, 32.8% overall and 51.3% living with HIV reported HPV vaccination. Since 2011, the proportion of MSM aged 18–26 years reporting HPV vaccination has increased over six-fold. As vaccinated adolescents age into young adults, coverage will continue to increase overall, including among MSM.
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Evaluation of Rapid Testing Algorithms for Venue-based Anonymous HIV Testing among Non-HIV-Positive Men Who Have Sex with Men, National HIV Behavioral Surveillance (NHBS), 2017
Journal of Community Health, 2020Co-Authors: Shamaya Whitby, Cyprian Wejnert, Amanda Smith, Johanna Chapin-bardales, Amy Martin, Rebecca Rossetti, Silvina MasciotraAbstract:HIV rapid testing algorithms (RTAs) using any two orthogonal rapid tests (RTs) allow for on-site confirmation of infection. RTs vary in performance characteristics therefore the selection of RTs in an algorithm may affect identification of infection, particularly if acute. National HIV Behavioral Surveillance (NHBS) assessed RTAs among men who have sex with men recruited using anonymous venue-based sampling. Different algorithms were evaluated among participants who self-reported never having received a positive HIV test result prior to the interview. NHBS project areas performed sequential or parallel RTs using whole blood. Participants with at least one reactive RT were offered anonymous linkage to care and provided a dried blood spot (DBS) for testing at CDC. Discordant results (RT-1 reactive/RT-2 non-reactive) were tested at CDC with lab protocols modified for DBS. DBS were also tested for HIV-1 RNA (VL) and antiretroviral (ARV) drug levels. Of 6500 RTAs, 238 were RT-1 reactive; of those, 97.1% (231/238) had concordant results (RT-1/RT-2 reactive) and 2.9% (7/238) had discordant results. Five DBS associated with discordant results were available for confirmation at CDC. Four had non-reactive confirmatory test results that implied RT-1 false reactivity; one had ambiguous confirmatory test results which was non-reactive in further testing. Regardless of order and type of RT used, RTAs demonstrated high concordant results in the population surveyed. Additional laboratory testing on DBS following discordant results confirmed no infection. Implementing RTAs in the context of anonymous venue-based HIV testing could be an option when laboratory follow-up is not practicable.
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Distributive Syringe Sharing and Use of Syringe Services Programs (SSPs) Among Persons Who Inject Drugs
AIDS and Behavior, 2019Co-Authors: Monica Adams, Dita Broz, Janet Burnett, Qian An, Cyprian Wejnert, Gabriela Paz-baileyAbstract:Monitoring distributive syringe sharing (DSS) and syringe services program (SSP) use among persons who inject drugs (PWID) is important for HIV prevention. PWID aged ≥ 18 in 20 US cities were recruited for National HIV Behavioral Surveillance in 2015 using respondent-driven sampling, interviewed and offered HIV testing. Bivariate and multivariable analyses via log-linked Poisson regression with generalized estimating equations were conducted to examine associations between demographic and Behavioral variables and DSS. Effect of SSP use on DSS by HIV sero-status was assessed by including an interaction between SSP and sero-status. Analyses were adjusted for sampling design. Among 10,402 PWID, 42% reported DSS. DSS was less likely to be reported among HIV-positive compared to HIV-negative PWID (aPR = 0.51, CI 0.45–0.60), and among those who primarily obtained syringes from SSPs versus those who did not (aPR = 0.82, 95% CI 0.77–0.88). After adjustment, those who primarily used SSPs were less likely to report DSS than those who did not among both HIV-negative PWID (aPR = 0.84, 95% CI 0.78–0.90) and HIV-positive PWID (aPR = 0.54, 95% CI 0.39–0.75). Findings support expansion of SSPs, and referrals to SSPs by providers working with PWID.
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Undisclosed HIV infection among MSM in a Behavioral Surveillance study.
AIDS (London England), 2019Co-Authors: Brooke E. Hoots, Cyprian Wejnert, Amy B. Martin, Richard E. Haaland, Silvina Masciotra, Catlainn Sionean, Amanda Smith, William M. Switzer, Gabriela Paz-baileyAbstract:Objective:As a proxy for undiagnosed HIV, the Centers for Disease Control and Prevention's National HIV Behavioral Surveillance (NHBS) monitors participants who report being unaware of their infection, defined as self-reporting an HIV-negative or unknown status during the interview but testing posit
Alexandra M. Oster - One of the best experts on this subject based on the ideXlab platform.
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hiv risk prevention and testing behaviors among heterosexuals at increased risk for hiv infection national hiv Behavioral Surveillance system 21 u s cities 2010
Morbidity and mortality weekly report. Surveillance summaries (Washington D.C. : 2002), 2014Co-Authors: Catlainn Sionean, Cyprian Wejnert, Alexandra M. Oster, Kristen L. Hess, Kathy Hageman, Gabriela PazbaileyAbstract:Problem/condition At the end of 2010, an estimated 872,990 persons in the United States were living with a diagnosis of human immunodeficiency virus (HIV) infection. Approximately one in four of the estimated HIV infections diagnosed in 2011 were attributed to heterosexual contact. Heterosexuals with a low socioeconomic status (SES) are disproportionately likely to be infected with HIV. Reporting period June-December 2010. Description of system The National HIV Behavioral Surveillance System (NHBS) collects HIV prevalence and risk behavior data in selected metropolitan statistical areas (MSAs) from three populations at high risk for HIV infection: men who have sex with men, injecting drug users, and heterosexuals at increased risk for HIV infection. Data for NHBS are collected in rotating cycles in these three different populations. For the 2010 NHBS cycle among heterosexuals, men and women were eligible to participate if they were aged 18-60 years, lived in a participating MSA, were able to complete a Behavioral survey in English or Spanish, and reported engaging in vaginal or anal sex with one or more opposite-sex partners in the 12 months before the interview. Persons who consented to participate completed an interviewer-administered, standardized questionnaire about HIV-associated behaviors and were offered anonymous HIV testing. Participants were sampled using respondent-driven sampling, a type of chain-referral sampling. Sampling focused on persons of low SES (i.e., income at the poverty level or no more than a high school education) because results of a pilot study indicated that heterosexual adults of low SES were more likely than those of high SES to be infected with HIV. To assess risk and testing experiences among persons at risk for acquiring HIV infection through heterosexual sex, analyses excluded participants who were not low SES, those who reported ever having tested positive for HIV, and those who reported recent (i.e., in the 12 months before the interview) male-male sex or injection drug use. This report summarizes unweighted data regarding HIV-associated risk, prevention, and testing behaviors from 9,278 heterosexual men and women interviewed in 2010 (the second cycle of NHBS data collection among heterosexuals). Results The median age of participants was 35 years; 47% were men. The majority of participants were black or African American (hereafter referred to as black) (72%) or Hispanic/Latino (21%). Most participants (men: 88%; women: 90%) reported having vaginal sex without a condom with one or more opposite-sex partners in the past 12 months; approximately one third (men: 30%; women: 29%) reported anal sex without a condom with one or more opposite-sex partners. The majority of participants (59%) reported using noninjection drugs in the 12 months before the interview; nearly one in seven (15%) had used crack cocaine. Although most participants (men: 71%; women: 77%) had ever been tested for HIV, this percentage was lower among Hispanic/Latino participants (men: 52%; women: 62%). Approximately one third (34%) of participants reported receiving free condoms in the 12 months before the interview; 11% reported participating in a Behavioral HIV prevention program. Interpretation A substantial proportion of heterosexuals interviewed for the 2010 NHBS heterosexual cycle reported engaging in behaviors that increase the risk for HIV infection. However, HIV testing was suboptimal among the overall sample, including among groups disproportionately affected by HIV infection (i.e., blacks and Hispanics/Latinos). Public health action Increasing coverage of HIV testing and other HIV prevention services among heterosexuals at increased risk is important, especially among groups disproportionately affected by HIV infection, such as blacks and Hispanics/Latinos. The National HIV/AIDS Strategy for the United States delineates a coordinated national response to reduce infections and HIV-related health disparities among disproportionately affected groups. NHBS data can guide national and local planning efforts to maximize the impact of HIV prevention programs.
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hpv vaccine coverage among men who have sex with men national hiv Behavioral Surveillance system united states 2011
Vaccine, 2014Co-Authors: Elissa Meites, Lauri E. Markowitz, Gabriela Pazbailey, Alexandra M. OsterAbstract:Men who have sex with men (MSM) are at high risk for disease associated with human papillomavirus (HPV). In late 2011, HPV vaccine was recommended for males through age 21 and MSM through age 26. Using data from the 2011 National HIV Behavioral Surveillance System, we assessed self-reported HPV vaccine uptake among MSM, using multivariate analysis to calculate adjusted prevalence ratios (aPRs) and 95% confidence intervals (CIs). Among 3221 MSM aged 18–26, 157 (4.9%) reported ≥1 vaccine dose. Uptake was higher among men who visited a healthcare provider (aPR 2.3, CI: 1.2–4.2), disclosed same-sex sexual attraction/behavior to a provider (aPR 2.1, CI: 1.3–3.3), reported a positive HIV test (aPR 2.2, CI: 1.5–3.2), or received hepatitis vaccine (aPR 3.9, CI: 2.4–6.4). Of 3064 unvaccinated MSM, 2326 (75.9%) had visited a healthcare provider within 1 year. These national data on HPV vaccine uptake among MSM provide a baseline as vaccination recommendations are implemented.
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HPV vaccine coverage among men who have sex with men – National HIV Behavioral Surveillance System, United States, 2011
Vaccine, 2014Co-Authors: Elissa Meites, Gabriela Paz-bailey, Lauri E. Markowitz, Alexandra M. OsterAbstract:Men who have sex with men (MSM) are at high risk for disease associated with human papillomavirus (HPV). In late 2011, HPV vaccine was recommended for males through age 21 and MSM through age 26. Using data from the 2011 National HIV Behavioral Surveillance System, we assessed self-reported HPV vaccine uptake among MSM, using multivariate analysis to calculate adjusted prevalence ratios (aPRs) and 95% confidence intervals (CIs). Among 3221 MSM aged 18–26, 157 (4.9%) reported ≥1 vaccine dose. Uptake was higher among men who visited a healthcare provider (aPR 2.3, CI: 1.2–4.2), disclosed same-sex sexual attraction/behavior to a provider (aPR 2.1, CI: 1.3–3.3), reported a positive HIV test (aPR 2.2, CI: 1.5–3.2), or received hepatitis vaccine (aPR 3.9, CI: 2.4–6.4). Of 3064 unvaccinated MSM, 2326 (75.9%) had visited a healthcare provider within 1 year. These national data on HPV vaccine uptake among MSM provide a baseline as vaccination recommendations are implemented.
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increases in hiv testing among men who have sex with men national hiv Behavioral Surveillance system 20 u s metropolitan statistical areas 2008 and 2011
PLOS ONE, 2014Co-Authors: Laura A. Cooley, Cyprian Wejnert, Alexandra M. Oster, Charles E Rose, Gabriela PazbaileyAbstract:In 2011, 62% of estimated new HIV diagnoses in the United States were attributed to male-to-male sexual contact (men who have sex with men, MSM); 39% of these MSM were black or African American. HIV testing, recommended at least annually by CDC for sexually active MSM, is an essential first step in HIV care and treatment for HIV-positive individuals. A variety of HIV testing initiatives, designed to reach populations disproportionately affected by HIV, have been developed at both national and local levels. We assessed changes in HIV testing behavior among MSM participating in the National HIV Behavioral Surveillance System in 2008 and 2011. We compared the percentages tested in the previous 12 months in 2008 and 2011, overall and by race/ethnicity and age group. In unadjusted analyses, recent HIV testing increased from 63% in 2008 to 67% in 2011 overall (P<0.001), from 63% to 71% among black MSM (P<0.001), and from 63% to 75% among MSM of other/multiple races (P<0.001); testing did not increase significantly for white or Hispanic/Latino MSM. Multivariable model results indicated an overall increase in recent HIV testing (adjusted prevalence ratio [aPR] = 1.07, P<0.001). Increases were largest for black MSM (aPR = 1.12, P<0.001) and MSM of other/multiple races (aPR = 1.20, P<0.001). Among MSM aged 18–19 years, recent HIV testing was shown to increase significantly among black MSM (aPR = 1.20, P = 0.007), but not among MSM of other racial/ethnic groups. Increases in recent HIV testing among populations most affected by HIV are encouraging, but despite these increases, improved testing coverage is needed to meet CDC recommendations.
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Piloting a System for Behavioral Surveillance Among Heterosexuals at Increased Risk of HIV in the United States
The open AIDS journal, 2012Co-Authors: Elizabeth Dinenno, Catlainn Sionean, Alexandra M. Oster, Paul Denning, Amy LanskyAbstract:Objectives: During the past decade, the number and proportion of reported HIV cases in the United States acquired through heterosexual contact has increased markedly. CDC employs the National HIV Behavioral Surveillance System (NHBS) to monitor risk behaviors and HIV prevalence in high-risk populations. To identify a target population for conducting NHBS among heterosexuals at increased risk for HIV (NHBS-HET), CDC designed, implemented and evaluated a pilot study. Methods: The pilot study was conducted in 25 US metropolitan statistical areas in 2006-7. We recruited men and women who reported sex with at least one opposite-sex partner during the past year for a Behavioral survey and HIV test. We investigated the relationship between newly diagnosed HIV infection and individual risk behaviors, sexual network characteristics, and social-structural characteristics to arrive at a definition of a heterosexual at increased risk of HIV. Results: Of 14,750 participants in the analysis, 207 (1.4%) had newly diagnosed HIV infection. Using low socio- economic status (SES) as a criterion for defining a heterosexual at increased risk for HIV resulted in optimal rates of HIV prevalence, specificity, sensitivity and practicality. Conclusions: Results from the NHBS pilot study underscore the key role of social factors as determinants of HIV infection risk among U.S. heterosexuals, and low SES was incorporated into the definition of a heterosexual at increased risk for HIV in NHBS-HET cycles. Future cycles of NHBS-HET will help tailor prevention programs for those populations most at risk of HIV in the US.
Gabriela Pazbailey - One of the best experts on this subject based on the ideXlab platform.
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age related differences in past or present hepatitis c virus infection among people who inject drugs national human immunodeficiency virus Behavioral Surveillance 8 us cities 2015
The Journal of Infectious Diseases, 2019Co-Authors: Winston E Abara, Dita Broz, Teresa Finlayson, William T. Robinson, Sara Nelson Glick, Eyasu H Teshale, Gabriela Pazbailey, Lindsay Trujillo, Alia Altayyib, Stephanie MasielloschuetteAbstract:BACKGROUND Historically, older people who inject drugs (PWID) have had the highest hepatitis C virus (HCV) burden; however, young PWID now account for recent increases. We assessed factors associated with past or present HCV infection (HCV antibody [anti-HCV] positive) among young (≤35 years) and older (>35 years) PWID. METHODS We calculated adjusted prevalence ratios (aPRs) and 95% confidence intervals (CIs) to examine sociodemographic and past 12-month injection behaviors associated with HCV infection. RESULTS Of 4094 PWID, 55.2% were anti-HCV positive. Among young PWID, anti-HCV prevalence was 42.1% and associated with ≤high school diploma/General Education Development diploma (GED) (aPR, 1.17 [95% CI, 1.03-1.33]), receptive syringe sharing (aPR, 1.37 [95% CI, 1.21-1.56]), sharing injection equipment (aPR, 1.16 [95% CI, 1.01-1.35]), arrest history (aPR, 1.14 [95% CI, 1.02-1.29]), and injecting speedball (aPR, 1.37 [95% CI, 1.16-1.61]). Among older PWID, anti-HCV prevalence was 62.2% and associated with ≤high school diploma/GED (aPR, 1.08 [95% CI, 1.02-1.15]), sharing injection equipment (aPR, 1.08 [95% CI, 1.02-1.15]), high injection frequency (aPR, 1.16 [95% CI, 1.01-1.34]), and injecting speedball (aPR, 1.09 [95% CI, 1.01-1.16]). CONCLUSIONS Anti-HCV prevalence is high among PWID and varies with age. Scaling up direct-acting antiviral treatment, syringe service programs, and medication-assisted therapy is critical to mitigating transmission risk and infection burden.
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updated data on linkage to human immunodeficiency virus care and antiretroviral treatment among men who have sex with men 20 cities united states
The Journal of Infectious Diseases, 2017Co-Authors: Brooke E. Hoots, Cyprian Wejnert, Teresa Finlayson, Gabriela PazbaileyAbstract:We examined differences in prevalence of linkage to care and antiretroviral (ARV) treatment among human immunodeficiency virus (HIV)-positive men who have sex with men (MSM) between 2008 and 2014 in National HIV Behavioral Surveillance. Prevalence of linkage to care increased from 79% in 2008 to 87% in 2014 (prevalence ratio [PR], 1.05; 95% confidence interval [CI], 1.03-1.07). ARV treatment increased from 69% in 2008 to 88% in 2014 (adjusted PR, 1.15; 95% CI, 1.12-1.18). Despite these increases, a large disparity in ARV treatment between white and black MSM remains. Increased resources are needed to support immediate referrals for ARV treatment for all MSM newly diagnosed with HIV.
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prevalence and correlates of heterosexual anal intercourse among men and women 20 u s cities
Aids and Behavior, 2016Co-Authors: Kristen L. Hess, Elizabeth Dinenno, Catlainn Sionean, Wade Ivy, Gabriela PazbaileyAbstract:Heterosexual anal intercourse (HAI) is not an uncommon behavior and it confers a higher risk of HIV transmission than vaginal intercourse. We examined data from heterosexuals recruited in 20 US cities for the 2013 National HIV Behavioral Surveillance system. We assessed correlates of reporting HAI in the previous year. Then, among people reporting HAI in the past year, we assessed what event-level factors are associated with having HAI at last sex. Thirty percent of women and 35 % of men reported HAI in the past year. Among people who had HAI in the past year, those who had HAI at last sex were more likely to have a partner who was HIV-positive or of unknown status or to have exchanged money or drugs for sex at last sex. Information that highlights the risk of HIV transmission associated with HAI would complement existing HIV prevention messages focused on heterosexuals in the U.S.
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hiv risk prevention and testing behaviors among heterosexuals at increased risk for hiv infection national hiv Behavioral Surveillance system 21 u s cities 2010
Morbidity and mortality weekly report. Surveillance summaries (Washington D.C. : 2002), 2014Co-Authors: Catlainn Sionean, Cyprian Wejnert, Alexandra M. Oster, Kristen L. Hess, Kathy Hageman, Gabriela PazbaileyAbstract:Problem/condition At the end of 2010, an estimated 872,990 persons in the United States were living with a diagnosis of human immunodeficiency virus (HIV) infection. Approximately one in four of the estimated HIV infections diagnosed in 2011 were attributed to heterosexual contact. Heterosexuals with a low socioeconomic status (SES) are disproportionately likely to be infected with HIV. Reporting period June-December 2010. Description of system The National HIV Behavioral Surveillance System (NHBS) collects HIV prevalence and risk behavior data in selected metropolitan statistical areas (MSAs) from three populations at high risk for HIV infection: men who have sex with men, injecting drug users, and heterosexuals at increased risk for HIV infection. Data for NHBS are collected in rotating cycles in these three different populations. For the 2010 NHBS cycle among heterosexuals, men and women were eligible to participate if they were aged 18-60 years, lived in a participating MSA, were able to complete a Behavioral survey in English or Spanish, and reported engaging in vaginal or anal sex with one or more opposite-sex partners in the 12 months before the interview. Persons who consented to participate completed an interviewer-administered, standardized questionnaire about HIV-associated behaviors and were offered anonymous HIV testing. Participants were sampled using respondent-driven sampling, a type of chain-referral sampling. Sampling focused on persons of low SES (i.e., income at the poverty level or no more than a high school education) because results of a pilot study indicated that heterosexual adults of low SES were more likely than those of high SES to be infected with HIV. To assess risk and testing experiences among persons at risk for acquiring HIV infection through heterosexual sex, analyses excluded participants who were not low SES, those who reported ever having tested positive for HIV, and those who reported recent (i.e., in the 12 months before the interview) male-male sex or injection drug use. This report summarizes unweighted data regarding HIV-associated risk, prevention, and testing behaviors from 9,278 heterosexual men and women interviewed in 2010 (the second cycle of NHBS data collection among heterosexuals). Results The median age of participants was 35 years; 47% were men. The majority of participants were black or African American (hereafter referred to as black) (72%) or Hispanic/Latino (21%). Most participants (men: 88%; women: 90%) reported having vaginal sex without a condom with one or more opposite-sex partners in the past 12 months; approximately one third (men: 30%; women: 29%) reported anal sex without a condom with one or more opposite-sex partners. The majority of participants (59%) reported using noninjection drugs in the 12 months before the interview; nearly one in seven (15%) had used crack cocaine. Although most participants (men: 71%; women: 77%) had ever been tested for HIV, this percentage was lower among Hispanic/Latino participants (men: 52%; women: 62%). Approximately one third (34%) of participants reported receiving free condoms in the 12 months before the interview; 11% reported participating in a Behavioral HIV prevention program. Interpretation A substantial proportion of heterosexuals interviewed for the 2010 NHBS heterosexual cycle reported engaging in behaviors that increase the risk for HIV infection. However, HIV testing was suboptimal among the overall sample, including among groups disproportionately affected by HIV infection (i.e., blacks and Hispanics/Latinos). Public health action Increasing coverage of HIV testing and other HIV prevention services among heterosexuals at increased risk is important, especially among groups disproportionately affected by HIV infection, such as blacks and Hispanics/Latinos. The National HIV/AIDS Strategy for the United States delineates a coordinated national response to reduce infections and HIV-related health disparities among disproportionately affected groups. NHBS data can guide national and local planning efforts to maximize the impact of HIV prevention programs.
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hpv vaccine coverage among men who have sex with men national hiv Behavioral Surveillance system united states 2011
Vaccine, 2014Co-Authors: Elissa Meites, Lauri E. Markowitz, Gabriela Pazbailey, Alexandra M. OsterAbstract:Men who have sex with men (MSM) are at high risk for disease associated with human papillomavirus (HPV). In late 2011, HPV vaccine was recommended for males through age 21 and MSM through age 26. Using data from the 2011 National HIV Behavioral Surveillance System, we assessed self-reported HPV vaccine uptake among MSM, using multivariate analysis to calculate adjusted prevalence ratios (aPRs) and 95% confidence intervals (CIs). Among 3221 MSM aged 18–26, 157 (4.9%) reported ≥1 vaccine dose. Uptake was higher among men who visited a healthcare provider (aPR 2.3, CI: 1.2–4.2), disclosed same-sex sexual attraction/behavior to a provider (aPR 2.1, CI: 1.3–3.3), reported a positive HIV test (aPR 2.2, CI: 1.5–3.2), or received hepatitis vaccine (aPR 3.9, CI: 2.4–6.4). Of 3064 unvaccinated MSM, 2326 (75.9%) had visited a healthcare provider within 1 year. These national data on HPV vaccine uptake among MSM provide a baseline as vaccination recommendations are implemented.