EDITOR’S NOTE: This story was reported in collaboration with the Global Health Reporting Center with support from the Pulitzer Center. Maina Modu, an immunization officer in Nigeria’s northeastern Borno state, lost his wife, Hauwa, to cervical cancer in 2011. She was one of the 349,000 women globally who die from the preventable cancer every year. Thirteen years later, he jumped at the chance to protect his family and community from undergoing such loss again.