Spontaneous reporting of adverse events following pandemic influenza A (H1N1) immunization in a reference center in the State of Sao Paulo, Brazil

Introduction This paper describes adverse events (AEs) temporally associated to the pandemic influenza A (H1N1) vaccine observed in a reference center in São Paulo, Brazil, during a 2010 mass vaccination campaign. Methods A retrospective study involving persons who sought medical care for AEs follow...

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Bibliographic Details
Published in:Revista da Sociedade Brasileira de Medicina Tropical
Main Authors: Danise Senna Oliveira, Amanda Nazareth Lara, Andre Machado Luiz, Karina Takesaki Miyaji, Ana Marli Christovam Sartori, Marta Heloisa Lopes
Format: Article in Journal/Newspaper
Language:English
Published: Sociedade Brasileira de Medicina Tropical (SBMT) 2013
Subjects:
Pandemic influenza A (H1N1)
Influenza vaccines
Adverse events following immunization
Arctic medicine. Tropical medicine
RC955-962
Arctic
Online Access:https://doi.org/10.1590/0037-8682-1265-2013
https://doaj.org/article/2c50a55394ba45e88e6e32e916a11495
Description
Summary:Introduction This paper describes adverse events (AEs) temporally associated to the pandemic influenza A (H1N1) vaccine observed in a reference center in São Paulo, Brazil, during a 2010 mass vaccination campaign. Methods A retrospective study involving persons who sought medical care for AEs following influenza vaccination. Data were retrieved from medical records, vaccine AE notification forms, and a computerized system for immunobiological registration. Results Sixty-six vaccinees sought medical care for AEs after immunization. The most frequent AEs were fever, headache, myalgia, and pain at the injection site. No serious AEs were reported. Conclusions Few vaccinees spontaneously reported AEs to influenza A (H1N1) vaccine at this center.

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