Immunization errors of COVID-19 vaccines in Minas Gerais - Revista Brasileira de Enfermagem

ORIGINAL ARTICLE

Immunization errors of COVID-19 vaccines in Minas Gerais

Revista Brasileira de Enfermagem. 2025;78(3):e20230525

DOI: 10.1590/0034-7167-2023-0525

Publication date: 08-08-2025

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ABSTRACT

Objectives:

to analyze immunization errors related to COVID-19 vaccines in Minas Gerais.

Methods:

a descriptive epidemiological study, carried out in Minas Gerais with data from e-SUS Notifica in 2021. Descriptive analysis and calculation of the incidence rate by health macro-regions of the state were performed.

Results:

of the 853 municipalities, only 381 (44.7%) reported some immunization error, totaling 2,724 reports. The incidence of errors reported in the state was 7.8/100 thousand doses applied, with the Vale do Aço macro-region (14.4/100 thousand) having the highest incidence. The most frequent error was the type of vaccine used (37.3%), and the Pfizer vaccine had the lowest incidence of error.

Conclusions:

the COVID-19 vaccine immunization errors reported in Minas Gerais point to the heterogeneity in incidence rates in the various macro-regions of the state, in addition to the underreporting of these errors.

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