Vaccination coverage and factors associated with incomplete childhood vaccination among children aged 12-59 months in Miagao, Iloilo, Philippines

Serafin O. Malecosio, M. Jascha Lane D. Celis, Katie B. Delicana, Anarey M. Deopido, Keanah Marie F. Kang Bacale, Van Karlo L. Labasan, Riza Mae C. Ladiao, Kriza Marie D. Militante, Jaypee M. Paguntalan, Von Erjun P. Sabusap


Background: Complete Vaccination has made a significant contribution to the prevention of infectious diseases among children. However, not all children were completely vaccinated.  This study aimed to determine the vaccination coverage, timeliness, and maternal-related factors associated with incomplete vaccination of children in Miagao, Iloilo, Philippines.

Methods: A cross-sectional study of children aged 12-59 months at the time the study was conducted between April 15 and 26, 2019 in Miagao, Iloilo. A total of 515 children were selected using a two-stage random sampling design. The data were collected from the Target Client Lists records, encoded, and analyzed using SPSS v21. Binary logistic regression was used to determine the factors associated with incomplete vaccination.  Crude and adjusted odds ratio (AOR) with their confidence interval were reported.

Results: The complete vaccination coverage among children was low at 28.7%. Among those completely vaccinated, 2.7% to 88.5% had untimely Vaccination.  Significant factors associated with incomplete Vaccination were children born at home (AOR=2.1; 95% CI: 1.32-3.36) and mothers who had two or less postnatal visits (AOR=3.4; 95% CI: 1.39-8.44). Age and number of antenatal visits of the mothers did not influence the outcome.

Conclusions: Maternal related factors significantly associated with incomplete vaccination were the place of child delivery and the number of postnatal visits of mothers.  The study recommends educating mothers on the importance of postnatal visits and enhancing maternal health services, especially the promotion of facility-based delivery.


Vaccination coverage, Vaccination timeliness, Incomplete vaccination, Factors associated with vaccination, Children vaccination

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Plotkin SL, Plotkin SA. A Short History on Vaccination. Plotkin’s Vaccines. Seventh Edition; 2018:1-15.

Fine PE. Herd immunity: history, theory, practice. Epidemiologic Reviews. 1993;15(2):265-302.

Mallory ML, Lindesmith LC, Baric RS. Vaccination-induced herd immunity: Successes and challenges. J Allergy Clin Immunology. 2018;142(2):64-6.

Peck M, Dobo GM, Diallo MS, Nedelec Y, Sodha S, Wallace AS. Global routine vaccination coverage, 2018. Morbidity and Mortality Weekly Report (MMWR). 2019;68(42):937-42.

Andre F, Booy R, Bock HL, Clemens J, Datta SK, John TJ, et al. Vaccination greatly reduces disease, disability, death, and inequity worldwide. Available at Accessed on 19 May 2019.

Bondy JN, Thind A, Koval JJ, Speechley KN. Identifying the determinants of childhood immunization in the Philippines. Vaccine. 2009;27(1):169-75.

Noh JW, Kim YM, Akram N, Yoo KB, Park J, Cheon J, et al. Factors affecting complete and timely childhood immunization coverage in Sindh, Pakistan; a secondary analysis of cross-sectional survey data. PloS one. 2018;13(10):e0206766.

Doherty M, Bunchy P, Standaert B, Giaquinto C, Cohrs PD. Vaccine impact: benefits for human health. Vaccine. 2016;34:6707-14.

Ulep VG, Uy J. Too early, too late: Timeliness of child Vaccination in the Philippines. Philippines Institute for Development Studies. Discussion Paper Series No. 2019-2020, December 2019. Available at

Legesse E, Dechasa W. An assessment of child immunization coverage and its determinants in Sinana District, Southeast Ethiopia. BMC Paediatrics. 2015;15(1):31.

John TJ. A developing country perspective on vaccine-associated paralytic poliomyelitis. Bulletin World Health Organization. 2003;82(1):53-8.

Masters N, Wagner A, Boulton M. Vaccination timeliness and delay in low- and middle-income countries: a systematic review of the literature, 2007-2017. Human Vaccine Immunotherap. 2019;15(12):2790-805.

Grant C, Roberts M, Scragg R, Stewart J, Lennon D, Kivell D, et al. Delayed immunization and risk of pertussis in infants: an unmatched case-control study. BMJ. 2003;326(7394):852-3.

Ober S, Salmon D, Orenstein W, Hart DM, Halsey N. Vaccine refusal, mandatory immunization, and the risk of vaccine-preventable diseases. New England J Med. 2009;360:1981-8.

Hoest C, Seidman JC, Lee G, Mills PJA, Ali A, Olortegui MP, et al. Vaccine coverage and adherence to EPI schedules in eight resource-poor settings in the MAL-ED cohort study. Vaccine. 2016;35(3):443-51.

Kagone M, Ye M, Nebie E, Sie A, Schoeps A, Becher H, et al. Vaccination coverage and factors associated with adherence to the vaccination schedule in young children of a rural area in Burkina Faso. Global Health Action. 2017;10:1399749.

Ni J, Xiong Y, Li T, Yu X, Qian B. Recent resurgence of measles in a community with high vaccination coverage. Asia Pacific J Public Health 2015;27(2).

Brieman R, Stratfield P, Phelan M, Shifa N, Rashid M, Yunus M. Effect of infant immunization on childhood mortality in rural Bangladesh: analysis of health and demographic surveillance data. Lancet. 2004;364(9452):2204-11.

WHO recommendation on postnatal care of the mother and newborns. World Health Organizations, 2014. WHO Cataloguing Publication data. Geneva Switzerland.

Girmay A, Dadi AF. Full immunization coverage and associated factors among children aged 12-23 months in Hard-to-Reach areas of Ethiopia. Int J Pediatrics. 2019;2019:1924941.