Related Experiment Video
Updated: Mar 7, 2026

Improving IV Insulin Administration in a Community Hospital
Published on: June 11, 2012
Analysis of adverse events following immunization caused by immunization errors
Lúcia Helena Linheira Bisetto1, Suely Itsuko Ciosak1
1Universidade de São Paulo, Escola de Enfermagem, Programa Interunidades de Doutoramento em Enfermagem. São Paulo-SP, Brasil.
Objective::
to analyze adverse events following immunization (AEFI) caused by immunization error in the state of Paraná, Brazil, from 2003 to 2013.
Method::
this is a descriptive, documental, retrospective, and quantitative research using secondary data from the Adverse Event Following Immunization Information System and the Immunization Program Evaluation System. We included cases confirmed and/or associated with different types of vaccines. For the analysis, we collected frequencies and incidence rates, and used simple linear regression models with Student's t-test.
Results::
it was observed an AEFI increase due to immunization errors, especially hot subcutaneous abscesses. BCG vaccine had the highest incidence of adverse events and children under one year old were the most affected individuals.
Conclusion::
the current scenario is worrisome because these are preventable AEFI - injuring patients due to bad vaccination practices - that may undermine the population's confidence, reducing immunization coverage, and the progress in the control of vaccine-preventable diseases.
Related Concept Videos
Pharmacovigilance
This process, termed pharmacovigilance, aims to detect, evaluate, and minimize harmful effects related to medication use. The data collection for pharmacovigilance depends on spontaneous reporting systems, where healthcare professionals or patients voluntarily report suspected ADRs.
In some cases, there...
Systematic Error: Methodological and Sampling Errors
Sampling errors originate from improper sampling methods or the wrong sample population. These errors can be minimized by refining the sampling strategy. Defective instruments or faulty calibrations are the sources of instrumental...
Vaccinations
Pharmaceutical Poisoning: Potential Scenarios
Types of Errors: Detection and Minimization
Absolute error in a measurement is the numerical difference from the true or central value. Relative error is the ratio between absolute error and the true or central value, expressed as a percentage.
Errors can be classified by source, magnitude, and sign. There are three types of errors: systematic, random, and gross.
Systematic or...
Types of Reports II: Incident or Occurrence Report
Purposes:
In the healthcare industry, reports play a crucial role in documenting incidents within an agency. The primary objective of these reports is to ensure patient safety, uphold the...
