Santos, Sérgio Pereira dosAmado, CarlaSantos, Mauro2014-07-082014-07-082011-07978-0-9569158-0-1AUT: SSA00141; CAM00958;http://hdl.handle.net/10400.1/4725AIDS is one of the most significant health care problems worldwide. Due to the difficulty and costs involved in treating HIV, preventing infection is of paramount importance in controlling the AIDS epidemic. The main purpose of this paper is to explore the potential of using Data Envelopment Analysis (DEA) to establish international comparisons on the efficiency of implementation of HIV prevention programmes. To do this we use data from 52 low- and middle-income countries regarding the prevention of mother-to-child transmission of HIV. Preliminary results indicate that there is a remarkable variation in the efficiency of prevention services across nations, suggesting that a better use of resources could lead to more and improved services, and ultimately, prevent the infection of thousands of children.engHIV preventionData envelopment analysisMother-to-child HIV transmissionconference object