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IAS 2015: Test and Treat Studies and African Country Experience Show 90-90-90 Targets Are Achievable

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Health services in some African countries including Botswana, Rwanda, and Malawi are now providing effective HIV treatment to a greater proportion of their HIV-positive citizens than the U.S. and other rich countries. Meanwhile, some of the first data to come from large African studies examining the population-level impact of treatment as prevention suggest that the objectives of testing and treating 90% of those eligible can be achieved.

[Produced in collaboration with Aidsmap.com]

These encouraging findings were presented at the International HIV Treatment as Prevention Workshop in Vancouver, in advance of the larger 8th International AIDS Society Conference on HIV Pathogenesis, Treatment and Prevention (IAS 2015) last week.

Michel Sidibé, executive director of the Joint United Nations Program on HIV/AIDS (UNAIDS), told the workshop that his organization’s ambitious targets of having 90% of people tested for HIV, 90% treated, and 90% of those on treatment with a suppressed viral load were achievable -- so long as there is political commitment and leadership.

Large Studies of Test and Treat

As outlined by Aidsmap.com last year, several massive randomized studies are examining the population impact of scaling up "test and treat" approaches in African countries. The studies will find out whether it is feasible to provide HIV testing to almost everyone in a local area and then -- for those diagnosed with HIV -- to link almost all of them to medical care and to provide almost all with HIV treatment that lowers their viral load to undetectable levels.

The ultimate aim is to substantially lower new HIV infections (incidence). Those results are not ready, but Diane Havlir from the University of California said that the SEARCH study is meeting the 90-90-90 targets.

Conducted in Uganda and Kenya, SEARCH is a study randomizing 32 communities to either an intervention of expanded testing and treatment, or usual services. A total of 334,540 people are enrolled.

After consultation with community stakeholders, the researchers decided against a narrowly HIV-focused testing drive. Instead, community health campaigns are run in intervention communities, offering testing for high blood pressure, diabetes, and malaria as well as HIV. These may be accompanied with talks and activities on a range of health and agriculture topics. This lessens the stigma of taking an HIV test and meets other health and social needs. Home visits and additional testing services for key populations attempt to reach those who do not take part in the community health campaigns.

Streamlined services have been designed to make healthcare more welcoming and less time-consuming for those diagnosed with HIV. Services sometimes struggle to engage with people who have high CD4 T-cell counts and who do not feel unwell. Streamlined services aim to improve engagement and retention of this group. Clinic and pharmacy visits are less frequent, waiting times have been reduced, staff are better trained, adherence and attendance problems are handled in a more empathetic way, many problems can be dealt with over the phone, and appointment reminders are sent by text message. Antiretroviral therapy is usually begun at the first visit and there is a structured counseling format for discussion of viral load results, both detectable and undetectable.

Havlir told the meeting that so far, 90% of adult stable residents have accepted the offer of testing, 93% of those diagnosed have been retained in care for at least 6 months, and 92% of those in care have a viral load below 400 copies/mL. 

PopART is one of the other large population studies, randomizing 21 communities with a total population of 1.2 million people to 3 different arms. Richard Hayes from the London School of Hygiene and Tropical Medicine said that interventions include annual home-based HIV testing, a range of health promotion activities, and an offer of immediate antiretroviral therapy.

Based only on the first annual round of implementation, the intervention appears to be close to reaching the first 90% target, with an estimated 87% of women and 79% of men living with HIV aware of their status. Without the intervention, figures would be 56% and 53%.

Acceptance of the offer of HIV treatment to those aware of their status has been slower, with 65% of women and 62% of men receiving antiretroviral therapy. Nonetheless the proportion who have begun treatment rises steadily with each successive month after diagnosis; the figures are expected to improve. Moreover, identifying ways to encourage quicker linkage to care is a priority for future rounds of the study.

Another challenge is improving men’s engagement with the program. A quarter could not be reached or refused to participate.

Close to 90-90-90

Meeting attendees heard that 2 African nations, Botswana and Rwanda, appear to have better treatment cascades than the U.S. These are not the results of research studies as described above, but reflect everyday services after several years of political commitment, investment in health, and strong governance. Both are small countries (with populations of 2 and 10 million, respectively) which have taken advantage of unique economic and historical circumstances to reform their health services.

Both are close to reaching the UNAIDS 90-90-90 targets. However, because the U.S. health system has considerable difficulties with linkage to and retention in care for poorer people, it lags behind.

 

Diagnosed

Treated

Undetectable

% of all people with HIV undetectable

UNAIDS target

90%

90%

90%

73%

Botswana

79%

86%

96%

65%

Rwanda

86%

79%

86%

58%

U.S.

86%

43%

81%

30%

Similarly, David Maman outlined the care cascade in Chiradzulu, Malawi, where Médecins Sans Frontières first established an antiretroviral treatment program in 2001. Based on a household survey, 77% of those living with HIV are diagnosed, 84% of them receive antiretroviral therapy, and 91% of those on treatment have an undetectable viral load.

Despite a local HIV prevalence of 17%, the widespread use of antiretroviral therapy has brought HIV incidence down to 0.34% per year. Maman hadn’t anticipated such a profound impact on new infections. "We never saw a model that showed that this was feasible," he told the meeting.

But impressive overall figures can mask inequalities. Sabin Nsanzimana from the Rwanda Biomedical Center said that prevalence remains substantially higher among female sex workers, men who have sex with men, and other key populations. If services are not appropriate and adapted to these groups, they and their sexual partners will not get the benefits of HIV treatment.

In many settings, men are less likely to get tested, and the inequality this introduces persists along the treatment cascade. Frank Tanser from the University of KwaZulu Natal noted that men’s poorer access to healthcare has direct implications for onward HIV transmission -- and therefore women’s health.

Overall, he said that the good news is that programs have learned how to provide antiretroviral therapy to willing volunteers and to able people who can get to clinics. The bad news is that they have not learnt how to reach people who are not motivated by sickness, people who have barriers to accessing care, and people who do not know their HIV status.

Finally, David Ripin of the Clinton Health Access Initiative said that as well as celebrating those countries doing well, attention needs to be given to high-prevalence countries that are struggling. There are 20 countries which account for 85% of all people who should receive antiretroviral therapy but do not, he said. Countries such as Nigeria, Mozambique, Cameroon, the Democratic Republic of Congo, and Indonesia need help to scale-up provision from a low base, he said.

7/28/15

Reference

International Treatment as Prevention Workshop. July 18, 2015. www.treatmentaspreventionworkshop.org