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COVER Billions of new dollars are pouring into programs that aim to help poor countries fight such infectious diseases as AIDS, malaria, and tuberculosis. But increasing numbers of people are beginning to ask tough questions about what the money has accomplished and what can be done to more quickly translate cash into care and prevention. See page 162. Image: Brent Stirton/Getty Images


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Science. ISSN 0036-8075 (print), 1095-9203 (online)