References
Abdulkarim, A. A. (2012). Vaccines and immunization: The past, present, and future in Nigeria. Nigerian Journal of Paediatrics, 38 (4), 186-194. Adegboye O.A., Kotze, D., & Adegboye, O.A. (2013). Multi-year trend analysis of childhood immunization uptake and coverage in Nigeria. Journal of Biosocial Science, 46(2), 225- 239. Adedokun, S. T., Uthman, O. A., Adekanmbi, V.T. (2017). Incomplete childhood immunization in Nigeria: A multilevel analysis of individual and contextual factors. BMC Public Health, 17, 236 https://doi.org/10.1186/s12889-017-4137-7 1-10 Adegboyega, O., & Abioye, K. (2017). Effects of health-care services and commodities cost on the patients at the primary health facilities in Zaria Metropolis, North Western Nigeria. Nigerian Journal Clinical Practice, 20, 1027–1035. Anyabolu, O. (2016). Understanding caregivers' perceptions of childhood immunization. https://scholarworks.waldenu.edu/dissertations. Awodele, O., Oreagba, I. A., Akinyede, A., Awodele, D. F., & Dolapo, D. C. (2010). The knowledge and attitude towards childhood immunization among mothers attending antenatal clinic in Lagos University Teaching Hospital, Nigeria. Tanzanian J Hlth Research, 1, 5. doi:10.4314/thrbv12i3.5 Birhanu, S. (2016). Knowledge, attitude and practice of mothers towards immunization of infants in health centres at Addis Ababa, Ethiopia. American Journal of Health Research, http://doi.org/ 10.11648/j.ajhr.20160401.12. Bofarraj, M. A. M. (2011). Knowledge, attitude and practices of mothers regarding immunization of infants and preschool children at Al-Beida City, Libya 2008. Egypt J Pediatr Allergy Immunol, 9, 29-34. Chen, Y., Paul, G., Havlin, S., Lijieros F., & Stanley, E. H. (2008). Finding a better immunization strategy. Phys. Rev. Lett. 101(5),5-10. 058701. Federal Republic of Nigeria (2010). Immunization report. FRN. Kennedy, A., LaVail, K., Nowak, G., Basket, M., & Landry, S. (2011). Confidence about vaccines in The United States: Understanding parents' perceptions. Health Affairs, 30(6), 1151-1159. https://doi.org/10.1377/hlthaff.2011.0396. Mugada, V., Chandrabhotla, S., Kaja, D . S., SatyaGopala, O., Krishna, S.G., & Aditya, M. (2017). Knowledge towards childhood immunization among mothers and reasons for incomplete immunization. Journal of Applied Pharmaceutical Science, 7(10), 157-161. National Population Commission (2013). Nigeria demographic and health survey. NPC National Population Commission (2018). Nigeria demographic and health survey. NPC Ojikutu, K.R. (2012). Knowledge, beliefs and perception of parents to pediatric vaccination in Lagos state, Nigeria. Journal of management and sustainability, 2(2), 10-17. Oluwadare, C. (2009). The social determinants of routine immunization in Ekiti state of Nigeria. Ethno-Medicine, 3(1), 49-59. Omole, M. & Owodunni, K. O. (2012). Mothers’ knowledge of immunization programme and factors influencing their compliance at a children hospital in South West Nigeria. Journal of Pharmaceutical and Biomedical Sciences, 21(18), www.jpbms.info Rahman, M., & Obaida-Nasrin, S. (2010). Factors affecting acceptance of complete immunization coverage of children under five years in rural Bangladesh. Salud Publication Mexico, 5(2),134-140. Raji, R. (2013). Factors influencing childhood immunization in Nigeria; a case for polio eradication in Nigeria. BioMedical Central Public Health, 18, 27-31. https://doi.org/10.1186/12889-018-5126-1 Ramadan, H., Soliman, R.A. & EI-Kader, R.A. (2016). Knowledge, attitude and practice of mothers towards children obligatory vaccination. A cross-sectional survey was utilized for the study. Journal of Nursing and Health Science, http://doi.org/10/9790/1959- 0504022228 Schacter, D. (2011). Psychology. Worth Publishers. Sinha, A., Levine, O., Knoll, M.D., Muhib, F., & Lieu, T.A. (2007). Cost-effectiveness of pneumococcal conjugate vaccination in the prevention of child mortality: an international economic analysis. Lancet, 369, 389-396. Tagbo, B.N., Uleanya, N. D., Nwokoye., I. C., Eze, J. C., & Omotowo, I. B. (2012). Mothers’ knowledge, perception and practice of childhood immunization in Enugu. Nigeria Journal of Paediatrics, 39(3), 90 – 96. Vonasek, J., Bryan, B.F., Jacobson, E., Twesigye, L., Dahm, J., Grant, J., Sethi, K.A., & Conway H. J. (2016). Do not maternal knowledge and attitudes towards childhood immunization in rural Uganda Correlate with complete childhood vaccination. PlosONE, https://doi.org/10.137/journal.pone.0150131. WHO, UNICEF and World Bank (2009). State of the world's vaccines and immunization. 3rd ed. https://www.unicef.org/immunization/files/SOWVI_full_report_english_LR1.pdf World Health Organization (2014). Progress towards global immunization goals: Summary presentation of key indicators. WHO. World Health Organization (2016). Global immunization coverage sustained in the past five years. WHO. World Health Organization (2017). Immunization Coverage. WHO.