Guillain-Barré syndrome following receipt of influenza A (H1N1) 2009 monovalent vaccine in Korea with an emphasis on Brighton Collaboration case definition

The Brighton case definition was used to improve the quality of AEFI data in Korea, and was applicable in retrospective review of medical records in cases with GBS and FS after influenza A (H1N1) vaccination. These findings suggest that standardized case definition was feasible in clarifying the AEFI data, and to further increase the understanding of possible relationship of influenza vaccine and GBS.