Johns Hopkins University, Johns Hopkins University, Johns Hopkins University - International Vaccine Access Center, Zambia Statistics Agency, Zambia Statistics Agency, Zambia Statistics Agency, University of Southampton - WorldPop, University of Southampton - WorldPop, Zamtel, Tropical Diseases Research Centre, Macha Research Trust, Macha Research Trust, Johns Hopkins University, Johns Hopkins University, Zambia Information and Communications Technology Authority, Macha Research Trust, Johns Hopkins University - Bloomberg School of Public Health, Johns Hopkins University and Johns Hopkins University - Department of International Health, International Vaccine Access Center