Power of Data Visualization

UNAIDS, the UN body charged with combatting the AIDS epidemic, released its latest report. This carries good news. Though some 33m people are infected, the rate of new infections is falling—down from 3.1m a year a decade ago to 2.6m in 2009. Moreover, as the map shows, the figure is falling fastest in many of the most heavily infected countries. The reason is a combination of behavioural change, a big reduction in mother-to-child transmission at birth and through breast-feeding, and the roll-out of drug treatment for those already infected.

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The latest dispatch from the war on AIDS brings good news. At 5.25m, the number of people in poor and middle-income countries who were being treated for HIV infection at the end of 2009 was up 30% from the end of 2008. Eight countries achieved coverage of 80% or better and 21 others covered more than half of those in need. Though the new figure still represents only about a third of those who could benefit, the rate of increase is impressive.

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