Abstract
According to the most recent estimates from the World Health Organization (WHO) and Joint United Nations Programme on HIV/AIDS (UNAIDS),1,2 42% of all HIV-positive individuals who were needing antiretroviral treatment (ART) at the end of 2008 were receiving treatment. This is a substantial increase on the level of 33% coverage at the end of the previous year. Coverage is defined as the number of individuals receiving ART at a point in time divided by the number of individuals who are eligible to receive treatment at the same point in time (including those who are already receiving ART).2 This is a cross-sectional measure, a “snapshot” of the cumulative ART enrolment relative to the “backlog” of unmet need, at a point in time. The measure is widely used and is the indicator of ART access that is currently recommended by the United Nations General Assembly Special Session on HIV/AIDS (UNGASS).
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