Immunization errors of COVID-19 vaccines in Minas Gerais.
Wiara Viana Ferreira, Thayane Ingrid Xavier de Andrade, Thays Cristina Pereira Barbosa and 5 others
PMID 40802435WHAT IT FOUND
2,724 reported COVID-19 immunization errors were analyzed in Minas Gerais in 2021.
The most frequent errors were in the vaccine type used and administration technique, and 68 children under 12 were vaccinated before authorization.
Key findings
01In 2021, Minas Gerais had 2,724 analyzed reports of COVID-19 immunization errors, with an overall rate of 7.8 per 100 thousand doses administered.
02The most frequent error was the type of immunological agent used (37.3%), followed by administration or technique errors (26.2%).
03Sixty-eight individuals under 12 years received COVID-19 vaccine in 2021, although vaccination was not authorized for this age group then.
STILL TO COME
How it was doneWhat they foundWhat it means for RNs
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What it does not show
The study used secondary reports, so the authors could not control underreporting or data quality; the real number of errors may be higher than reported. Only 381 of 853 municipalities reported at least one error, which may reflect incomplete reporting rather than absence of errors. The authors state that regional differences may reflect reporting culture rather than true error frequency.
Declared interests
The supplied text does not report funding or author conflicts of interest; the Minas Gerais State Health Department provided the database.
The easy way to misread this
Do not read the 7.8 per 100 thousand doses figure as the true error rate. It is based only on reported records, and the authors state that underreporting and data quality problems may mean the real occurrence is underestimated.