ABSTRACT Objective To analyse vaccination coverage and factors associated with incomplete polio vaccination in a cohort of children born in 2017-2018, in state capitals and interior region municipalities of Northeast Brazil. Methods Household survey of children aged ≤24 months conducted between 2020 and 2022. Vaccination coverage and dropout rates were estimated, as well as factors associated with incomplete vaccination, analyzed by calculating odds ratios (OR) and 95% confidence intervals (95%CI). Results : Among 12,137 children, vaccination coverage (4 doses) was 80.9% (95%CI 78.4;83.1); 8.4% were not vaccinated. Not having a vaccination card (OR=18.06; 95%CI 10.01;32.61) and use of private services (OR=1.46; 95%CI 1.23;1.74) were associated with incomplete vaccination. Higher dropout rates were found for the booster dose, especially in the highest stratum. Conclusion Low vaccination coverage, poor dose follow-up and high dropout rates were found for polio vaccines in the areas studied. 20172018, 20172018 2017 2018, 2018 2017-2018 Brazil 24 ≤2 202 2022 estimated OR (OR 95 95%CI. 95CI CI . (95%CI) 12137 12 137 12,13 4 ( doses 809 80 9 80.9 78.483.1 784831 78.4 83.1 78 83 1 78.4;83.1) 84 8 8.4 vaccinated OR=18.06 OR1806 18 06 (OR=18.06 10.0132.61 10013261 10.01 32.61 10 01 32 61 10.01;32.61 OR=1.46 OR146 46 (OR=1.46 1.231.74 123174 1.23 1.74 23 74 1.23;1.74 stratum followup follow up studied 2017201 201 2017-201 2 ≤ 20 1213 13 12,1 80. 483 78.483. 78483 784 78. 831 83. 7 78.4;83.1 8. OR=18.0 OR180 0 (OR=18.0 0132 10.0132.6 1001326 1001 10.0 3261 32.6 3 6 10.01;32.6 OR=1.4 OR14 (OR=1.4 231 1.231.7 12317 123 1.2 174 1.7 1.23;1.7 201720 2017-20 121 12, 48 78.483 7848 78.4;83. OR=18. OR18 (OR=18. 013 10.0132. 100132 100 10. 326 32. 10.01;32. OR=1. OR1 (OR=1. 1.231. 1231 1. 17 1.23;1. 20172 2017-2 78.48 78.4;83 OR=18 (OR=18 10.0132 10013 10.01;32 OR=1 (OR=1 1.231 1.23;1 2017- 78.4;8 10.013 10.01;3 OR= (OR= 1.23; 78.4; 10.01;
RESUMO Objetivo Analisar a cobertura vacinal e os fatores associados ao esquema incompleto das vacinas contra a poliomielite em coorte de nascidos vivos de 2017-2018, em capitais e municípios do interior do Nordeste brasileiro. Métodos Inquérito domiciliar em crianças com idade ≤ 24 meses, entre 2020 e 2022. Estimaram-se a cobertura vacinal, a taxa de abandono e fatores associados ao esquema de vacinação incompleto, analisados pela razão de chances (odds ratio, OR) e intervalos de confiança de 95% (IC95%). Resultados Em 12.137 crianças, a cobertura vacinal (quatro doses) foi de 80,9% (IC95% 78,4;83,1); 8,4% não eram vacinadas. Não possuir caderneta de vacinação (OR = 14,05; IC95% 8,54;23,12) e uso de serviço privado (OR = 1,46; IC95% 1,23;1,74) estiveram associados à vacinação incompleta. Taxas de abandono mais altas foram observadas na dose de reforço, principalmente no estrato alto. Conclusão Observaram-se baixas coberturas, redução no seguimento das doses e elevadas taxas de abandono para vacinas contra a poliomielite nas áreas estudadas. 20172018, 20172018 2017 2018, 2018 2017-2018 brasileiro 2 meses 202 2022 Estimaramse Estimaram se odds ratio OR 95 IC95%. IC95 IC . (IC95%) 12137 12 137 12.13 quatro 809 80 9 80,9 (IC95 78,483,1 784831 78,4 83,1 78 4 83 1 78,4;83,1) 84 8 8,4 vacinadas 14,05 1405 14 05 8,5423,12 8542312 8,54 23,12 54 23 8,54;23,12 1,46 146 46 1,231,74 123174 1,23 1,74 74 1,23;1,74 incompleta reforço alto Observaramse Observaram coberturas estudadas 2017201 201 2017-201 20 IC9 1213 13 12.1 80, (IC9 483 78,483, 78483 784 78, 831 83, 7 78,4;83,1 8, 14,0 140 0 5423 8,5423,1 854231 854 8,5 2312 23,1 5 8,54;23,1 1,4 231 1,231,7 12317 123 1,2 174 1,7 1,23;1,7 201720 2017-20 121 12. (IC 48 78,483 7848 78,4;83, 14, 542 8,5423, 85423 85 23, 8,54;23, 1, 1,231, 1231 17 1,23;1, 20172 2017-2 78,48 78,4;83 8,5423 8542 8,54;23 1,231 1,23;1 2017- 78,4;8 8,542 8,54;2 1,23; 78,4; 8,54;
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