The assignment provided is a compilation of research papers and articles related to global health, specifically focusing on polio eradication efforts in Nigeria. It includes studies on the use of mobile phones to improve vaccination uptake, environmental and human surveillance of polioviruses, and cost-effectiveness of interventions for reproductive, maternal, neonatal, and child health. The assignment also covers strategies for targeting the last polio sanctuaries with directly observed oral polio vaccination in northern Nigeria, and the use of satellite imagery analysis to guide immunization responses. It provides a comprehensive overview of various approaches to addressing potential polio reservoir areas and improving childhood immunization uptake.