According to the World Health Organisation, Leishmaniasis, a chronic and sometimes deadly skin disease, is a growing problem which affects the poorest of the poor. The disease, found in places like the Middle East and South America, is commonly linked to malnutrition, poor housing, and a lack of resources. There are currently around 15 million cases of Leishmaniasis around the world, with 1.5 to 2 million new cases being diagnosed every year. But, a vaccine could be on the way, thanks to two unlikely researchers - and a prestigious science prize. Al Jazeera's Kimberly Halkett reports from Washington.
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