Epstein is wrong about South Africa's AIDS response
Published: Aug. 1, 2012, 3 p.m., Last updated: Aug. 1, 2012, 12:36 a.m.
This is a response to an article written by Helen Epstein on the New York Review of Books Blog.
Epstein is wrong about South Africa's AIDS response
By Nathan Geffen, Francois Venter and Francesca Conradie
Helen Epstein is an influential journalist and regular contributor to one of the world's most prestigious literary journals, the New York Review of Books (NYRB). It is therefore unsettling that she has written an article on the NYRB blog that contains serious errors about the South African HIV epidemic and the important prevention benefits of antiretroviral treatment (ART). 1
In her first sentence Epstein writes, "When I first visited South Africa in 2000 to report on the AIDS epidemic there, one adult in five was HIV positive, and a million children had lost one or both parents to the disease." These numbers are simply wrong. UNAIDS estimates that by 2001 there were 580,000 children who had lost one or both parents to AIDS. This is a horrific figure, but substantially less than Epstein's. 2 The Actuarial Society of South Africa estimates the number of children who had lost a mother or both parents to AIDS by mid-2000 and they reach a considerably lower estimate of about 120,000. 3 Epstein also overstates the percentage of adults infected with HIV in 2000. 4
Epstein writes, "Although the HIV infection rate has finally begun to fall in neighboring countries like Botswana and Zimbabwe, it remains stubbornly high in South Africa. After studying the African epidemic for two decades, I've come to believe that shame and silence are the primary reasons ..."
She is wrong that South Africa's infection rate is not falling. Also wrong is her implication that shame and silence make the South African epidemic signally different from those in Botswana and Zimbabwe.
First, infection rate or incidence. Countrywide, this is notoriously hard to calculate, so estimates should be approached with caution. Nevertheless, the most reputable data shows, contrary to Epstein, that HIV incidence has dropped significantly in South Africa. The UN estimates that from 2000 to 2009 South Africa's incidence dropped from 2.9% to 1.8%. This is higher than Zimbabwe's but lower than Botswana's. 5 The latest UNAIDS report shows that from 2009 to 2011 child infections dropped in South Africa by 49%, in Zimbabwe by 45% and in Botswana by 22%. 6 South Africa's prevalence amongst 15 to 49 year olds also lies between that of Zimbabwe and Botswana. 7
Then, "shame and silence". How do we measure these? Or compare them between countries? But even so Epstein's assertion is misinformed. There is considerable openness about AIDS in South Africa, perhaps as much as any other sub-Saharan African country. This is in part the consequence of the vigorous edge given to debates about the epidemic over the last decade and more by the Treatment Action Campaign (TAC), which successfully campaigned against both high drug prices and President Mbeki's disastrous AIDS denialist policies.
Here people, too many to enumerate, live openly with HIV; they talk regularly on radio and television about their status. There are media projects and health agencies that deal almost exclusively with HIV. The HIV-positive T-shirts the TAC famously pioneered, and which Nelson Mandela endorsed and wore, are ubiquitous. Soap opera stars speak openly about living with HIV. Instruction on sex and HIV is mandatory in schools. 8 Millions of people take tests for HIV every year at public health facilities. 9 And while AIDS is no longer at the forefront of media debate as it was some years ago, that is because the politics surrounding the issue are no longer so toxic: a sane health minister is implementing sane AIDS policies. This is not a silent epidemic.
Perhaps Epstein misplaces the failures of Mbeki's government as the failures of South African society as a whole. Perhaps she thinks the South Africa she found in 2000 was the same country in 2003 or still exists in 2012. But throughout the Mbeki era South African organisations, individuals and even some provincial governments took strong public stands. Ironically, it was under Mbeki--no thanks to him of course--that civil society and health carers tackled stigma and discrimination with palpable success. Stigma's erosion accelerated massively when ART was made publicly available from 2004 (and even before in places like Khayelitsha, where it was provided much earlier). This was because people saw their friends and loved ones, previously close to death, recover to good health.
Stigma still exists of course, but the response to the disease both by government and ordinary people is far more open and tolerant than 12 years ago. Epstein describes how in Uganda in the 1990s she witnessed "plays, vigils and marches, and everyone talked about AIDS in highly personal ways." She also says, "here was vigorous public debate about how men and women treated one another, and even the poorest people cared for the sick and their orphaned children with decency and sacrifice."
This is precisely how an informed observer would describe the response to AIDS in South Africa since 2000 and even earlier. This is not to say that people with HIV do not frequently meet discrimination--as they no doubt do in Zimbabwe, Botswana, Uganda and the United States--but the mute South African response to AIDS that Epstein postulates does not match reality.
Epstein says, "South Africa's brutal history obviously casts a long shadow over the present day culture, but it's also possible that South Africans continue to stigmatize people with AIDS because, unlike gay men [in the US] and Ugandans, they don't understand how the virus is spreading in their community."
This is a strange claim--that South Africans "don't understand" HIV transmission. On what does Epstein base it? While knowledge surveys must be treated with caution (and often give inconsistent results), they predominantly indicate that people in South Africa know how HIV is transmitted. They also know that condoms effectively prevent transmission. The third South African National HIV Communication Survey, just released, found that most people from age 16 to 55 have been tested for HIV and that communication programmes have turned condom use, or at least reported condom use, into a social norm. 10
It's interesting that Epstein cites the example of gay men. Gay men in South Africa receive HIV prevention and treatment information. Many gay men are at the forefront of AIDS campaigns. They participate in the struggle against AIDS without fear of government repression. Gay marriage is legal.
But in Epstein's idealised counter-example, Uganda, run by the autocratic Yoweri Museveni, gay men are subjected to horrific abuse, violence and threats. Public hate campaigns in the media and hate-speech by politicians silence them. Pending legislation proposes the death penalty for homosexuality. Epstein surely doesn't suggest that Uganda's homophobia is an example to emulate, but then she should properly amend her overly romanticised account of Uganda's response to the epidemic.
Epstein has long been convinced that the drop in incidence in Uganda was due to behaviour change, specifically a reduction in concurrent partnerships. This might or might not be so. But Epstein fails to acknowledge the massive uncertainty in establishing cause in the behavioural sciences and dismisses other plausible explanations. AIDS scientists simply do not agree on whether concurrency explains the higher rates of HIV prevalence in sub-Saharan Africa. On the contrary, its role is vigorously debated. Nor is there a scientifically proven intervention to reduce concurrency.
Epstein writes "The South African Department of Health and the international donors who support the country's AIDS programs have done little to help break this silence." This is an extraordinary claim. President Zuma, whatever his shortcomings, has taken an HIV test publicly, which the Minister of Health plausibly claims has boosted national testing campaigns. 11 There are several highly visible AIDS communication programmes in South Africa: Soul City, LoveLife, Siyayinqoba and, previously, Khomanani, let alone the work of the TAC and many other civil society organisations. Some of these campaigns receive funding from the Department of Health. All receive money from international donors. Some of them, including Soul City, focus on concurrency. There is debate about their efficacy, but silence there certainly is not. It is true that organisations face funding difficulties, but so do treatment programmes. And these communication programmes have been well-funded in the past.
Toward the end of her article, Epstein dismisses the effectiveness of ART to reduce new infections. There are several errors and misrepresentations in this part of her text. For example:
Epstein states, "The rationale for using AIDS drugs to prevent the spread of the virus is based on the results of a single experimental trial of a method known as 'treatment as prevention'". The trial Epstein refers to, known as HPTN 052, was one of the largest HIV trials ever. It found that people with HIV who were given ART at high CD4 counts were 96% less likely to transmit the virus to their partners than those with HIV who deferred treatment. It was well-designed and -run. Its results were compelling, meeting the highest standards of evidence in medical science. It is therefore inexplicable that Epstein chooses to deride it. There is also compelling observational data from several studies across the world that support HPTN 052's conclusions. 12
For example, an observational study of over 3,000 heterosexual African couples by Deborah Donnell and colleagues found that people on treatment were over 90% less likely to transmit HIV to their partners. 13 What this means is that even as ART is currently provided in most of Africa, it is likely reducing incidence.
Using ART for prevention was supported initially by good biological plausibility, followed by supporting observational evidence. Finally the clinical trial clinched the deal. This is similar to the way male circumcision entered HIV prevention. Behaviour change interventions have arguably not progressed beyond the first step and definitely not progressed beyond observational studies. Yet Epstein is disdainful of the considerable evidence that ART reduces transmission but confident that behaviour change programmes will work. This is an inconsistent approach to the evidence.
Epstein states that all new infections that occurred in the South African couples enrolled in the HPTN 052 trial came from concurrent partners. But there were only a few infections in the South African sites. Country-specific conclusions should not be drawn from HPTN 052. It was an international study and its results provide sufficient evidence at least to try treatment as prevention in pilot schemes in areas with large epidemics, including South Africa. This is indeed being done now in a number of studies. We cannot be sure treating people earlier will reduce countrywide incidence, but to dismiss HPTN 052's relevance to South Africa as Epstein does, just because of a rigid opinion, unsupported by evidence, is to risk missing a great opportunity.
While they differ in their estimates, all the main epidemiological models of the South African HIV epidemic, which are calibrated using the best available evidence, suggest that treatment has already significantly reduced HIV incidence, even though guidelines provide for people only to begin treatment when their CD4 count drops below 350 cells/mm3 (a recommendation which is reasonable given current evidence of the benefits of treatment to the patient). 14 Furthermore, treatment has significantly reduced mortality and reversed the decline in life-expectancy. This has been a great success of the South African programme since 2004 and is surely the most important goal in the response to the HIV epidemic.
Epstein states, "Other reasons [treatment as prevention won't work in South Africa] include the risk of increased resistance to drugs, which will vastly escalate costs as well as the frequency of severe side effects, since it will require the use of more toxic second-line drugs." Again, Epstein invokes homely "wisdom" in the face of firm evidence to the contrary. There are already about two million people on ART in South Africa and there is currently very limited drug resistance. Only a small fraction of patients are on second line regimens, eight years after implementation of the mass ART rollout. Data on "severe side effects" suggest they are rare on the new regimens being used here. But even if Epstein's pessimism bears out in the future, the alternative to not risking an increase in resistance is to not provide treatment and to let people die.
Epstein states, "This single minded mass treatment approach, also dubiously known as 'combination prevention,' may benefit the pharmaceutical industry, but it isn't the most efficient use of limited resources, or the most effective way of saving lives." Epstein appears not to understand the term "combination prevention". It refers to several interventions including condom distribution, public messaging of the sort Epstein endorses, and circumcision (which elsewhere Epstein has endorsed). Also, Epstein offers no alternative intervention that has anything remotely close to the evidence of ART for treating and preventing HIV. There is no other intervention that is as effective at saving lives. 15
Epstein, perhaps unintentionally, undermines the importance of ART both for treatment and prevention in order to promote her favoured theory. She has done so based on a poor reading of the scientific literature and a mis-portrayal of South Africa. This is a country with a complex history and epidemic. She does both herself and her readers a disservice in misstating or ignoring South Africa's progress against the HIV epidemic.
Geffen is the Treasurer of the Treatment Action Campaign. Venter is a clinician with the Wits Reproductive Health & HIV Institute. Conradie is the President of the Southern African HIV Clinicians Society.
Epstein, H. 2012. South Africa's AIDS Orphans: Breaking the Silence. NYRB Blog. http://www.nybooks.com/blogs/nyrblog/2012/jul/18/south-africa-aids-orphans-breaking-silence/ ↩
UNAIDS. UNAIDS report on the Global AIDS epidemic. See p. 186. The number of orphans is estimated to lie between 460 000 and 750 000. http://www.unaids.org/globalreport/documents/20101123_GlobalReport_full_en.pdf ↩
ASSA. ASSA2008 Life Orphan Output. http://aids.actuarialsociety.org.za/scripts/buildfile.asp?filename=OrphansProv_110216.zip ↩
See The ASSA2008 Provincial Outputs and the 2010 UNAIDS report cited above. http://aids.actuarialsociety.org.za/scripts/buildfile.asp?filename=ProvOutput_110216.zip ↩
UN. Millennium Development Goals Indicators. http://mdgs.un.org/unsd/mdg/SeriesDetail.aspx?srid=802 ↩
UNAIDS. Together we will end AIDS. http://www.unaids.org/en/media/unaids/contentassets/documents/epidemiology/2012/20120718_togetherwewillendaids_en.pdf ↩
Also see UNAIDS's South Africa fact sheet which shows declining incidence. http://www.unaids.org/en/regionscountries/countries/southafrica/ ↩
Department of Basic Education. HIV and AIDS Integrated Strategy (2012-2016) Summary Report. http://www.education.gov.za/LinkClick.aspx?fileticket=obmjS2dC%2bQM%3d&tabid=358&mid=1713 ↩
Key findings of the third South African National HIV Communication Survey, 2012. http://jhuccp.org/sites/all/files/NationalHIVCommunicationSurvey.pdf ↩
Kahn, T. Minister encouraged by public’s attitude towards HIV prevention. Business Day 25 July 2012. http://www.businessday.co.za/articles/Content.aspx?id=176982 ↩
Geffen, N. 2011. When to start ART in adults: the results of HPTN 052 move us closer to a 'test-and-treat' policy. The Southern African Journal of HIV Medicine. September 2011. http://nathangeffen.webfactional.com/whentostartart.pdf ↩
Donnell et al. Heterosexual HIV-1 transmission after initiation of antiretroviral therapy: a prospective cohort analysis. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2922041/ ↩
Eaton et al. 2012. HIV Treatment as Prevention: Systematic Comparison of Mathematical Models of the Potential Impact of Antiretroviral Therapy on HIV Incidence in South Africa. http://www.plosmedicine.org/article/info%3Adoi%2F10.1371%2Fjournal.pmed.1001245 ↩
For ART's economic benefits, see for example Bor et al. 2012. Dramatic increases in population life expectancy and the economic value of ART in rural South Africa. http://pag.aids2012.org/abstracts.aspx?aid=21509 ↩