Vaccine coverage within the first year of life and associated factors with incomplete immunization in a Brazilian birth cohort

Abstract

Background: Immunization has been held as a major achievement for global health, however, still exist many children who are not completely vaccinated. Knowledge about factors contributing to the incomplete immunization is important to develop effective strategies and interventions to achieve universal coverage to control or eradicate vaccine-preventable diseases. This study aimed to describe immunization coverage within the first year of life and associated factors with incompleteness among participants of the 2015 Pelotas Birth Cohort, Brazil. Methods: Cross-sectional analyses were performed using data from a population-based cohort. Information on vaccination status was collected from immunization cards and verbal mother's reports from 4014 children aged 24 months. Coverage was described for each vaccine, for the basic and the complete national schedule. Incomplete vaccination was defined as failure to receive the recommended number of doses by the National Immunization Program in 2015. Bivariate and multivariate Poisson regressions with robust variance were conducted to identify factors associated with incompleteness.Results: Vaccine coverage of individual vaccines varied from 81% (Hepatitis A) to 97% (BCG). Full immunization coverage were 77% (95% CI: 75.8; 78.4) and 66.1% (95% CI: 64.6; 67.5), for basic and expanded indicators, relatively. Multivariate analyses showed that factors associated with incompleteness (for both basic and expanded coverage) were high family income, high parity, low number of prenatal consultations, not have done the tetanus toxoid, reduced diphtheria toxoid, and acellular pertussis (Tdap) vaccine during pregnancy, not have breastfeed the child until at age 12 months and not have used public health care services for child's vaccination.Conclusion: Findings of our study show the need to develop and implement policies and programs to achieve complete immunization during the first year of life. Some strategies would include an increase in the primary health care services networks, improving their quality and access, the dissemination of scientific-based evidence about the benefits of vaccination, through communication campaigns and guidance provided by health professionals, especially those responsible for prenatal care.

Vaccine uptake and associated factors in an irregular urban settlement in northeastern Brazil: a cross-sectional study

“…However, another study reported higher rates of incomplete immunization with new vaccines in children from low social classes D and E (Additional file 1 ) [ 7 ]. Recently a cohort study in the south Brazilian region, revealed high family income as associated factor with incompleteness coverage, highlighting differences within the country in relation to income and settings [ 10 ].…”

Análise Da Cobertura Vacinal Infantil No Estado De Mato Grosso: Um Estudo Comparativo

“…Comparação dos resultados da cobertura vacinal (CV) em Mato Grosso (MT) com a meta nacional de CV do Programa Nacional de Imunizações (PNI) para imunobiológicos correspondentes ao esquema 0-10 anos no período de 2015-2019. (BUFFARINI, et al, 2020). Já quanto à Febre Amarela, cuja CV preconizada é de 100%, ressalta-se que o Estado de Mato Grosso é endêmico para a doença, fato que reforça a necessidade de estratégias de alcance mais efetivas (QUEIROZ, et al, 2013: 294-302).…”

Post-partum Hospital Stay and Mothers' Choices on Breastfeeding and Vaccines: A Chance We Should Not Miss

“…The need for scientific-based information provided by healthcare workers has been underlined in many countries across the world (27). Despite that, the Italian healthcare system has hardly considered in-hospital post-partum stay as an appropriate and timely setting for vaccine education, while a large study conducted in France has demonstrated how postpartum vaccination promotion through motivational interviews is an effective tool for increasing vaccination rates at 7 months of age (28).…”