Treatment as prevention it is complex let us work on it
Sponsored Links
This presentation is the property of its rightful owner.
1 / 17

Treatment as Prevention: It is complex: Let us work on it PowerPoint PPT Presentation

  • Uploaded on
  • Presentation posted in: General

Treatment as Prevention: It is complex: Let us work on it. Kenneth H. Mayer Fenway Health Beth Israel Deaconess Hospital Harvard Medical School Boston, Mass

Download Presentation

Treatment as Prevention: It is complex: Let us work on it

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript

Treatment as Prevention: It is complex: Let us work on it

Kenneth H. Mayer

Fenway Health

Beth Israel Deaconess Hospital

Harvard Medical School

Boston, Mass

July 23rd, 2012 Session Room 2

Is Treatment as Prevention Utopian?

Most PLHIV are unaware that they are infected

Successful TasP requires massive ↑Testing

Percentage of women and men who received an HIV test and test results in last 12 months, 2003–2010 (WHO/UNAIDS)

Still a long way to go to reach 15 million on ART, let alone treating everyone



Estimated gap:

CD4 cell count ≤ 350/mm3 but not on ART



Patients receiving ART

WHO, 2011

Effective prevention interventions have not been brought to scale


~ 20 million by 2016

Total MCs through 2011:

~1.35 million, 6.5%

of target


Male circumcisions performed annually in 14 priority countries in eastern and southern Africa

Source: WHO

Major inequities persist in access to treatment and prevention

Source: Global HIV/AIDS Response. Epidemic update and health sector progress towards Universal Access. Progress Report 2011. WHO/UNAIDS/UNICEF. Table 6.9, p. 137.

Who is Prescribed ART and Who Achieves Viral Suppression in the USA (MMP)?

* P value <0.05 Skarbinski, CROI, 2012

Clinical Care System ConsiderationsAddressing the HIV Continuum of Care






850,000 with HIV do not have virus under control (72%)

MMWR (60), 2011

Early retention in care (Mugavero et al)

The first year in outpatient HIV medical care is a dynamic, formative & vulnerable time

Poor early retention in care associated with:

Delayed / failed antiretroviral therapy (ART) receipt

Delayed time to VL suppression and greater cumulative HIV burden

Increased sexual risk transmission behaviors

Increased risk of clinical events & mortality

Worse ART adherence, CD4 & VL response and increased long-term mortality following ART start

Ulett et al. AIDS Pt Care STDS 2009;23, Giordano et al. JAIDS 2003;32, Metsch et al. Clin Infect Dis 2008;47, Mugavero et al. Clin Infect Dis 2009;48, Tripathi et al. AIDS Res Hum Retrovirus 2011;e-pub, Giordano et al. Clin Infect Dis 2007;44

Linkage to Care: CDC ARTAS

  • Outcome: 1o HIV provider visit attended w/in:

  • Intervention is efficacious, but additional steps needed to promote linkage to care…

Gardner et al. AIDS 2005;19

Clinical Care System ConsiderationsLinkage, retention, and effectiveness (USA)

  • Linkage to care and preventive services

    • Only 69% of persons with HIV attend clinic within 12 months of diagnosis

    • Case management improves linkage by 32% at cost of $1,200 per person

    • Interventions focused on adherence increase likelihood of undetectable viral load by 15%

  • Effectiveness depends on coverage during entire cascade from testing to care

    • Transmission reductions can vary from 15% to 44%

WalenskyClD2010, Marks AIDS 2010; CrepazAIDS 2006


Looking Ahead:Challenging Times for HIV Prevention

  • Picture in the United States especially grim:

    • Federal deficit ~$1.3 trillion for FY 2011

    • 5-year freeze on federal discretionary spending

    • Reductions in HIV prevention by health departments

      • ~45,000 state and local public health jobs lost

      • Staff furloughs, hiring freezes, pay cuts

    • Many community organizations closed or struggling

  • Similar picture being observed in other Western Industrialized settings, driven by economic downturn

Kaiser Family Foundation; NASTAD; Center on Budget and Policy Priorities

*Total includes HIV and viral hepatitis prevention programs, but majority of funds cut were from HIV

Social Cognitive Model: TasP Needs to Consider Concomitant Issues

Depression, anxiety, mental health problems

Pleasure reduction

Safer Sex Adherence

Self efficacy

Disease prevention

Social Models

Wulfert, Safren, et al., 1999; Journal of Applied Social Psychology

HPTN 052: Lots of “Uncoupled” Transmissions

Total HIV-1 Transmission Events: 39

Linked Transmissions: 28

Unlinked or TBD Transmissions: 11

  • Up to 30% of new infections in couples occur outside the primary relationship (Campbell et al PLoS One 2011; Hughes et al. J Infect Dis 2011)

Immediate Arm: 1

Delayed Arm: 27

p < 0.001

A combination of interventions has more impact than the interventions delivered alone

Source: Tim Hallett, personal communication

Combination Antiretroviral Prevention

Interventions to Increase Testing

Enroll in Care


HIV Negative

HIV Positive

ART Initiation


To Care


Risk Assessment PrEP, Adherence




Adherence to ART

Address concomitant concerns, e.g. depression, substance use, relationship dynamics

Maintain Viral


Decrease in

HIV Transmission


Thank You

Kevin Fenton

Gottfried Hirnschall

Tim Hallett

Steven Safren


Michael Mugavero

Wafaa El-Sadr


  • Login