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HIV among MSM A focus on Black MSM and MSMW Nina T. Harawa, MPH, PhD
Associate Professor UCLA / Charles Drew University
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Brief Overview of HIV/AIDS Research with U.S. Black MSM
Greg Millett OAR Workshop on HIV/AIDS in Black MSM October 20, 2011
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Talk Objectives Describe the Epidemiology of HIV in MSM populations
Discuss factors that heighten MSMs’ HIV risk above other groups’ Discuss factors that heighten Black MSM’s HIV risk and HIV burden above other MSMs’
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Who are MSM? Diverse group.
May identify as gay, bisexual, heterosexual or with no label and be of any racial/ethnic background. Estimated to be million in the US (~2%) Term is based on history of sexual behavior with other men – used to separate behavior from identity from behavior, which is more relevant to risk. Sometimes now MSM or MSMO are now used to refer to those who only have male partners. MSMW is used for those with both male & (recent) female partners.
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In 2011, among adults and adolescents diagnosed with HIV infection in the United States and 6 dependent areas, an estimated 62% of all diagnosed infections were attributed to male-to-male sexual contact. An estimated 18% of all diagnosed infections were attributed to heterosexual contact for females and 10% for males. An estimated 5% of all diagnosed infections were attributed to injection drug use for males and 3% for females. Approximately 3% of diagnosed infections were attributed to male-to-male sexual contact and injection drug use. Less than 1% of diagnosed infections were attributed to other transmission categories. Data include persons with a diagnosis of HIV infection regardless of stage of disease at diagnosis. All displayed data are estimates. Estimated numbers resulted from statistical adjustment that accounted for reporting delays and missing transmission category, but not for incomplete reporting. Heterosexual contact is with a person known to have, or to be at high risk for, HIV infection. Other transmission categories include hemophilia, blood transfusion, perinatal exposure, and risk factor not reported or not identified.
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This pie chart shows the percentage distribution of HIV infections diagnosed in 2011 among adult and adolescent men who have sex with men (MSM),* by race/ethnicity, in the United States and 6 dependent areas. Black/African American MSM accounted for approximately 38% of adult and adolescent MSM who were diagnosed with HIV infection. White MSM accounted for an estimated 34% and Hispanic/Latino MSM accounted for 24%. Asians and persons of multiple races each accounted for approximately 2% of diagnoses of HIV infection. American Indians/Alaska Natives and Native Hawaiians/other Pacific Islanders each accounted for less than 1% of diagnoses. Data include persons with a diagnosis of HIV infection regardless of stage of disease at diagnosis. All displayed data are estimates. Estimated numbers resulted from statistical adjustment that accounted for reporting delays and missing transmission category, but not for incomplete reporting. Data on men who have sex with men do not include men with HIV infection attributed to male-to-male sexual contact and injection drug use Hispanics/Latinos can be of any race.
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From 2008 through 2011, in the United States and 6 dependent areas, the largest estimated numbers of diagnoses of HIV infection were seen among MSM aged years. The number of diagnoses among MSM aged 25–34 increased 16% from 2008 through MSM aged 13–24 had the greatest percentage increase (26%) in diagnoses of HIV infection from 2008 through 2011, and exceeded the decreasing number of diagnoses among those aged 35–44 by 2010. Data include persons with a diagnosis of HIV infection regardless of stage of disease at diagnosis. All displayed data are estimates. Estimated numbers resulted from statistical adjustment that accounted for reporting delays and missing transmission category, but not for incomplete reporting. Data on men who have sex with men do not include men with HIV infection attributed to male-to-male sexual contact and injection drug use.
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New HIV Infections among MSM (2008-2011)
CDC, 2014 Among youth in the United States From , HIV among MSM incidence increased YMSM aged 13–19 make up 90% of male HIV cases Among all age groups (except 35-44) 26% among MSM 13-24 Among young MSM 16% among MSM 25-34 There were more new infections among young black MSM than among all other MSM groups combined. 23% among young black MSM Among ALL new infections Adolescents and young adults accounted for over a quarter of new infections in 2010 In 2011, 62% were attributed to MSM contact; including 77% of all male cases
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Diagnoses of HIV Infection among Adolescents and Young Adults Aged 13–24 Years, by Race/Ethnicity, 2008–2011 United States and 6 Dependent Areas During 2008 through 2011, blacks/African Americans accounted for more than 55% of diagnoses of HIV infection each year among adolescents and young adults aged 13 to 24 years in the United States and 6 dependent areas. In 2011, of persons aged 13 to 24 years diagnosed with HIV infection, 60% were black/African American, 18% were white, 19% were Hispanic/Latino, 2% were persons of multiple races, 1% each were Asian and American Indian/Alaska Native, and less than 1% were Native Hawaiian/other Pacific Islander. The racial/ethnic distribution of diagnoses of HIV infection in persons aged 13 to 24 years differs substantially from the distribution of diagnoses among all adults and adolescents (aged 13 and over) in Among all adults and adolescents diagnosed with HIV infection in 2009, 45% were black/African American, 29% were white, 22% were Hispanic/Latino, 2% were Asian, 1% were of multiple races, and less than 1% each were American Indian/Alaska Native and Native Hawaiian/other Pacific Islander. Data include persons with a diagnosis of HIV infection regardless of stage of disease at diagnosis. All displayed data are estimates. Estimated numbers resulted from statistical adjustment that accounted for reporting delays, but not for incomplete reporting. Hispanics/Latinos can be of any race. Note. Data include persons with a diagnosis of HIV infection regardless of stage of disease at diagnosis. All displayed data have been statistically adjusted to account for reporting delays, but not for incomplete reporting. a Hispanics/Latinos can be of any race.
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HIV among Young Black MSM: An All Too Familiar Tale
Young Men’s Survey, 3492 MSM ages (7 cities) CDC investigations of HIV outbreaks among young black MSM North Carolina, 2003 Mississippi, Milwaukee, Race HIV prevalence (%) HIV incidence (%) Black 14% 4% Latino 6.9% 1.8% White 3.3% 2.4%
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HIV prevalence by selected regions and subgroups
Colfax, 2011 Adapted from: El-Sadr, et al., NEJM, 2010
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Individual-level Factors Heightening Risk for MSM
More frequent anal sex Higher numbers of partners than other men Increased prevalence of some STDs – facilitates HIV acquisition and transmission Substance use
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Sexual behaviors and HIV Risk
Receptive anal sex (100) Receptive vaginal sex (20) Insertive anal sex (13) Insertive vaginal sex (10) Giving oral sex (2) Receiving oral sex (1) () = relative risk per unprotected sexual encounter in serodiscordant couples (MMWR, 2003)
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Individual-Level Factors Heightening Risk in Black MSM
Undiagnosed infection greater among BMSM Lower HIV treatment rates for HIV+ BMSM Higher rates of STIs Lower rates of participation in clinical trials That said, there are some correlates of HIV risk and HIV related health outcomes that have been found to be particularly relevant for BMSM or YMSM of color and those are highlighted here.
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The Role of Undiagnosed HIV Infection in Transmission Risk
HIV Prevalence Data from NHBS – MSM in 20 US Cities & Puerto Rico CDC, MMWR, 2010
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Sexually Transmitted Infections
Syphilis rates Across 27 states from , increase in syphilis rate 8x greater among black MSM compared to white MSM Greater overall STIs among black MSM across studies Current STD (OR 2.12 , 95%, 1.68–2.67) Gonorrhea (OR, 1.53; 95% CI, 1.25–1.87) Syphilis (OR, 2.14; 95% CI, 1.70–2.69) Hepatitis B (OR, 2.48; 95% CI, 1.27–4.86)
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Limitations of Individual-Level Risk
Research focus for past 30 years Plurality of HIV/AIDS studies of MSM report Sexual risk behaviors (# male sex partners, UAI, etc) Drug use behaviors (IDU, poppers, meth, crack, etc) Risk does not explain observed disparities in HIV infection (Harawa, 2004) Can ignore context that influences behavior Reinforces blaming the victim Groups first affected by the epidemic. Homophobia, stigma, and discrimination play an important but complex role. No need to re-litigate
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Psychological & Social Correlates
Depression associated with serodiscordant UAI Prevention peer norms Low peer norms associated with increased likelihood of unprotected receptive anal intercourse (OR = 2.14; 95% CI = 1.32, 3.47) unprotected insertive anal intercourse (OR = 1.90; 95% CI = 1.15, 3.14)
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Discrimination Racial discrimination and homophobia
Black MSM with more integrated racial/ sexual identities report Higher self-esteem Greater HIV prevention self-efficacy Greater social support Greater life satisfaction Con of studies examining homophobia and discrimination Very weak associations (distal, no relationship, poor measures) Endpoint generally UAI (not serodiscordant UAI, HIV incidence, or HIV testing) Lack of interventions to address these issues Timeliness of intervention effects
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Discrimination Belief that homosexuality is always wrong Among blacks, proportion who indicated that homosexuality was "always wrong" was 72.3% in 2008 and largely unchanged since the 1970s Declined among whites from 70.8% in 1973 to 51.6% in 2008 Racial differences among MSM and belief that homosexuality is always wrong Twice as many black MSM reported that homosexuality is "always wrong" compared with white MSM (57.1% versus 26.8%, P = 0.003). Association between belief homosexuality is always wrong and HIV testing MSM with unfavorable attitudes toward homosexuality were less likely to report ever testing for HIV compared with MSM with more favorable attitudes Examined link between social support and undiagnosed HIV infection among black and Latino MSM Black and Latino MSM with less social support were more likely to be diagnosed with HIV infection Black MSM who were more religious were more likely to have unrecognized infection (ByH, unpublished) Intervention possibilities Increase social support for black MSM Address homophobia among black heterosexuals Gap: No effective stigma interventions
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HIV/AIDS Conspiracy Belief
CONSPIRACY Beliefs HIV/AIDS Conspiracy Belief Black MSM (n=239) % Latino MSM (n=152) White MSM (n=111) Pharmaceutical companies hiding cure for HIV/AIDS because of profits 58* 50* 42 HIV/AIDS drugs harm you more than help you 56* 48* 41 HIV does not cause AIDS 54* 27 HIV is a man-made virus 41* 35 High levels of mistrust is associated with medication nonadherence among black men *P<.05 versus White MSM
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Physical Abuse Intimate partner violence and black MSM
Association with HIV infection? Childhood sexual abuse is associated with HIV infection in several studies of MSM High rates of childhood sexual abuse reported by black MSM
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Psychological Correlates
Possible intervention implications Influencing peer norms Utilizing trusted persons/ CBOs to disseminate information on HIV prevention Utilizing health navigators for people who test positive Short-term and effective interventions to address depression/ anxiety?
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The Role of Networks Characteristics of sex partners coupled with background prevalence influences transmission risk Older partners Black partners Earlier sexual debut Concurrency not associated with HIV infection Concurrency does not explain greater risk Black partners not a sufficient explanation for disparities Black MSM couples engage in less risk than other same race couples interracial couples with one black partner
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The Role of Networks Black MSM prefer black partners (Clerkin, 2011)
Other MSM prefer non-black partners (Raymond, 2009)
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The Role of Networks Drilling down on the influence of sexual and social networks among black MSM Peterson, 2008: First descriptive study of HIV risk behaviors in network of black MSM Oster, 2011: First phylogenetic analysis of HIV+ MSM to examine associations with demographics and transmission dynamics Fuqua, 2011: Utilized networks to recruit black MSM for HIV testing Latkin, 2011: Examined differences in networks of MSM and MSM/W, and examined serostatus disclosure Schneider, 2011: Multiple findings Highly assortative sexual mixing among negatives Having a contact in social network approving of unsafe sex associated with UAI Disassortative mixing among positives
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The Role of Networks Characteristics of sex partners coupled with background prevalence influences transmission risk Older partners Black partners Earlier sexual debut Disassortative mixing among positives Serodiscordant sex HIV-positive black MSM (Eaton, 2010) Serostatus nondisclosure with HIV-negative/unknown status Serosorting protective for HIV-negative black MSM BUT seroconversion likelihood greater than other MSM Possible interventions Increasing HIV status disclosure (given recent HIV testing) Improving serosorting efficacy for HIV negative black MSM Reducing serodiscordant sex HIV-positive black MSM
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Structural Barriers Definition: Physical, environmental or social structures, or laws or policies that affect HIV transmission risk. Structural impediments Poverty Homelessness Incarceration
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Structural Barriers Across Treatment Cascade
Undiagnosed HIV+ Diagnosed not in care In care and taking ART Diagnosed and in care Viral suppression Far way from HPTN 052 Adapted from Gardner, CID, 2011
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Structural Barriers Across Treatment Cascade
No health insurance Health care providers missing diagnoses Undiagnosed HIV+ Diagnosed not in care In care and taking ART Testing/ care not co-located Diagnosed and in care Viral suppression Far way from HPTN 052 Adapted from Gardner, CID, 2011
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Structural Barriers Across Treatment Cascade
No health insurance Health care providers missing diagnoses Undiagnosed HIV+ Diagnosed not in care In care and taking ART Testing/ care not co-located Not receiving meds b/c of inadequate health insurance Lack of culturally competent care Diagnosed and in care Stigma assoc w/ taking meds Suboptimal regimens/ side effects Stigma Viral suppression Far way from HPTN 052 Adapted from Gardner, CID, 2011
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Immunogenetics Increased HIV Susceptibility
CCR5 allele: acquisition and disease progression HLA allele: racial differences in protective effect by HIV subtype Duffy antigen: Protective effect for malaria among blacks, but increases risk for HIV infection Barriers to Effective HIV Treatment Antiretroviral treatment possibly less effective in black populations Poorer response to HCV antiviral therapies with peginteferon and ribavirin due to Vitamin D deficiencies among blacks compared to non-blacks Greater multidrug resistant HIV among Black MSM Black MSM sexual networks
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Resilency Black MSM just as likely to utilize HIV prevention programs
Study show Black MSM engage in less or similar levels of sexual risk and less drug use Most black MSM are not HIV-positive Black MSM less likely to report adversity or homophobia
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Additional References
Wejnert C, Le B, Rose CE, Oster AM, Smith AJ, et al. (2013) HIV Infection and Awareness among Men Who Have Sex with Men–20 Cities, United States, 2008 and PLoS ONE 8(10): e doi: /journal.pone David Malebranche, MD, MPH slide set “HIV/AIDS in the African American Community” RR data adapted from Varghese B, Maher JE, Peterman TA, et al. Reducing the risk of sexual transmission: quantifying the per-act risk for HIV infection based on choice of partner, sex act, and condom use. Sex Transm Dis 2002;29: and CDC, HRSA, NIH, & HIVMA. Incorporating HIV Prevention into the Medical Care of Persons Living with HIV. MMWR 2003;52:RR-12.
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Additional Resources CDC: www.cdc.gov/hiv
Black Gay Research Group (BGRG) National AIDS & Education Services for Minorities (NAESM) In the Meantime Men’s Group (inthemeantimemen.org) X-Homophobia Campaign.
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