Reuben Mwanza (right) of PATH enters vaccination data into a tablet computer during a vaccination service at the Mahatma Gandhi Clinic in Livingstone, Zambia on October 17, 2016.
John Healey—Bill & Melinda Gates Foundation


Creating maps to find those who need help

Some public-health problems are mountains, and some are millions of molehills. Kenya-based software company Ona uses satellite imagery and information from such NGOs as Zambia’s Akros to create a simple digital mapping system that helps health workers locate remote dwellings and identify what health services they need, in real time, in the field—vital in interventions like malaria spraying and vaccine distribution. —Belinda Luscombe

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