Our country-specific and regional analytic studies cover many topics, helping inform countries' decisions about policies and programs.  All our reports can be found on line at www.worldbank.org/aids.  Recent studies have assessed country surveillance systems; the socio-economic effects of AIDS in Russia, the Ukraine and the Middle East and North Africa region; the impact of the first Russian public education campaign on HIV and AIDS; and the AIDS drug patents and registration systems in Russia.  Other analysis helped Argentina to assess the most cost-effective prevention strategies, looked at options for scaling up the response in the Andean region, and assessed behavior change communications in the Latin American and Caribbean region.  In India, an assessment of policy options explored the possible effects of combining Antiretroviral Therapy and HIV prevention; a study in Bhutan assessed the national response and opportunities and challenges in expanding action.  A new analysis of existing data and key factors driving the epidemic in countries across South Asia underscores differences and similarities in the way the epidemic is developing, and where programs need stronger emphasis.  A study in Indonesia looks at ways to improve surveillance, and allocate resources to the most cost-effective prevention interventions.  Field work in Africa has looked at the situation and needs of children orphaned by AIDS; families caring for people with AIDS; and refugees, displaced and migrant populations and their host communities in the Great Lakes Region countries.  Evaluations of our work and the programs we support highlight lessons learned.