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Africans Take HIV Medicines More Faithfully than North Americans
Posted by plosmedicine on 31 Mar 2009 at 00:02 GMT
Author: Amir Attaran
Position: Institute of Population Health, Faculties of Law and Medicine
Institution: University of Ottawa, Canada
Submitted Date: November 22, 2006
Published Date: November 30, 2006
This comment was originally posted as a “Reader Response” on the publication date indicated above. All Reader Responses are now available as comments.
In 2001, the chief of the United States Agency for International Development (USAID), Andrew Natsios, gave this justification to the US Congress for why the agency opposed giving antiretroviral therapy (ART) to Africans with HIV:
"If we had [HIV medicines for Africa] today, we could not distribute them. We could not administer the program because we do not have the doctors, we do not have the roads, we do not have the cold chain... [Africans] do not know what watches and clocks are. They do not use western means for telling time. They use the sun. These drugs have to be administered during a certain sequence of time during the day and when you say take it at 10:00, people will say what do you mean by 10:00?".
Natsios was not the only policymaker to justify withholding ART from Africans on the basis that weak infrastructure, or patients' inability to take tablets, would stymie adherence. Senior officials of the World Bank and Thai government said in The Lancet: "[ART] is not... a technology that most poor people could adhere to... [Further] The use of public funds to subsidize the treatment of patients in the poorest countries who are most able to comply... would be highly inequitable" .
Two new systematic reviews prove these speculations were mistaken [3,4]. Despite their continent's poverty, and schooled or not in time keeping, Africans overcome these barriers and are better than North Americans at taking ART. These studies correct the misconception of earlier, nonsystematic reviews that concluded that Africans' adherence to medicines is "often poor" .
The first review (which I coauthored) identified 31 studies from North America and 27 from sub-Saharan Africa examining adherence to ART . The bottom line was simple: using the customary definition that "good adherence" means taking ART as prescribed 95% of the time or better, then 82% of Africans succeeded at that goal, compared with only 55% of North Americans (p is less than 0.001).
Some may see this result as surprising. To live in Nairobi means to face so many privations compared to New York that to overcome them and excel seems almost storybook untrue. But privation can cut both ways. People who have been denied the necessities of life, who then receive the gift of medicines and a chance to live, may be more likely to appreciate ART.
Although Africans take ART more faithfully that North Americans, there is room for improvement. Here is where the second review is instructive . The authors identified 84 studies from rich and poor countries that qualitatively or quantitatively identified factors impeding or facilitating adherence to ART. The impeding factors in rich and poor countries were familiar ones: patients' aversion or forgetfulness about medicines; lack of trust in health workers; fears about AIDS or its treatment; and emotions of isolation.
The authors found only two qualitative studies of barriers and facilitators of adherence among patients in poor countries . There is accordingly few data on which to conclude that, for example, patients must give up alcohol, or must undergo directly-observed therapy, to adhere to medicines, as some programs require [6,7].
In rich countries, the study failed to identify any obvious "big fix" that could turn non-adherent patients into adherent ones. On the other hand, for developing countries, "financial constraints" towered above the other reasons why poor patients may fail to adhere to ART. That is cruelly ironic, because the same international development policymakers who rejected the idea that poor people could adhere to ART also worked for financial donors such as USAID and the World Bank, and their passionate arguments against ART stalled the delivery of the one variable that helps adherence-money.
Where is the flaw that allows speculation to get ahead of evidence in development policymaking, and how can we recognize when a particular development policy is speculative, the better to abandon it? One should be highly suspicious whenever development policymakers sound dismissive of the people who they are hired to help. The central aspiration of development work is helping the poor and sick become richer and healthier. Such an aspiration is incompatible with speculating that certain foreigners are incapable of enjoying the fruits of development. I believe that the views of Natsios and the World Bank and Thai officials, speculating that Africans could not adhere to ART, were dismissive in just this way.
Dismissing patients like this leads to a lower standard of medical care. The medical establishment is more sensitive to the standard of care than is the development establishment, and so the medical establishment must be vigilant against bad development policy. Development policymakers have also freely opined that Africans could not manage to take artemisinin-based combination therapies for malaria, or second-line treatments for tuberculosis. We now know that Africans are capable of all these things-but overcoming the dismissals and excuses took years, during which millions died.
1. "The United States' War on AIDS". Hearing before the Committee on International Relations, House of Representatives, 107th Congress, 1st session, 7 June 2001, at page 28. See http://wwwc.house.gov/int....
2. Ainsworth M, Teokul W. Breaking the silence: setting realistic priorities for AIDS control in less-developed countries. Lancet 2000;356:55-60.
3. Mills EJ, Nachega JB, Buchan I, Orbinski J, Attaran A, Singh S, Rachlis B, Wu P, Cooper C, Thabane L, Wilson K, Guyatt GH, Bangsberg DR. Adherence to antiretroviral therapy in sub-Saharan Africa and North America: a meta-analysis. JAMA 2006;296:679-90.
4. Mills EJ, Nachega JB, Bangsberg DR, Singh S, Rachlis B, et al. (2006) Adherence to HAART: A systematic review of developed and developing nation patient-reported barriers and facilitators. PLoS Med 3(11): e438.
5. Gill CJ, Hamer DH, Simon JL, Thea DM, Sabin LL. No room for complacency about adherence to antiretroviral therapy in sub-Saharan Africa. AIDS 2005;19:1243-9.
6. Medecins sans Frontieres South Africa, the Department of Public Health at the University of Cape Town, and the Provincial Administration of the Western Cape, South Africa. Antiretroviral therapy in primary health care: experience of the Khayelitsha programme in South Africa: case study. (WHO, Geneva, 2003). See http://www.who.int/hiv/am....
7. Farmer P, Leandre F, Mukherjee J, Gupta R, Tarter L, Kim JY. Community-based treatment of advanced HIV disease: introducing DOT-HAART (directly observed therapy with highly active antiretroviral therapy). Bulletin WHO 2001;79:1145-51.