First vaccine to treat malaria — or any parasitic disease — gives epidemiologists hope

World Health Organization malaria expert Dr. Mary Hamel and Dr. Kwame Amponsa-Achiano of Ghana's Health Service join Here & Now's Scott Tong to discuss hopes for GlaxoSmithKline's Mosquirix, which is not just the first vaccine to treat malaria, it's also the first developed to treat any parasitic disease.