MARIAM Haruna has been struggling to keep up with her six-month-old baby's vaccination appointments at the Family Support Clinic in Odaki, Kogi State, Nigeria. She lives about one hour from the clinic and usually covers the distance on foot, except on a few occasions when a male relative drops her off. When her child is due to receive a vaccine, the vaccination officer contacts her on the phone. All too often, she cannot get to the clinic. Vaccination Coverage in Nigeria Nigeria's 2021 National Immunisation Coverage Survey Report, published by UNICEF, reveals that only 36% of children between the ages…