Impact of childhood immunization in the state of Piauí: ecological time series study on vaccination coverage from 2000 to 2022
DOI:
https://doi.org/10.26694/repis.v11i1.6474Keywords:
Vaccination Coverage, Child Health, Vaccine-Preventable Diseases, Infant MortalityAbstract
Objective: To analyze the temporal trend of vaccination coverage among children aged zero to 12 years in the state of Piauí. Method: Ecological time-series study following the STROBE guidelines, analyzing vaccines from the childhood calendar. Data were collected from institutional platforms (DATASUS, OpenDataSUS, and CIEGES-PI), calculated by SI-PNI, tabulated in Excel, and analyzed in SPSS 22.0 with descriptive statistics and calculation of the infant mortality rate per 100,000 live births. Results: Infant mortality in Piauí decreased between 2000 and 2022. Coverage of vaccines such as pentavalent, polio, rotavirus, and pneumococcal increased in certain periods, while BCG and hepatitis B vaccines decreased in recent years. Implications: Expanding vaccination coverage and reducing infant mortality require active targeting of unvaccinated individuals, educational campaigns, and training of professionals in the correct use of information systems. It is also necessary to strengthen BCG and hepatitis B vaccination in maternity wards, ensuring early protection.
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Furthermore, the worsening of vaccine hesitancy, enhanced by the spread of misinformation during the pandemic, reinforces the urgency of educational campaigns based on scientific evidence, aiming to regain public confidence and strengthen immunization programs.
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Copyright (c) 2025 Maria Clara Sales Rodrigues, Lannara Sofia de Araújo Pereira, Laele Vieira Soares, Luana Bastos Araújo, Esteffany Vaz Pierot
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