Flu vaccine implicated in vasculitis case

An investigation of an Australian man who developed vasculitis after his flu vaccination has provided clues to how vaccination may trigger such a response.

The 52 year-old was well until he developed anti-neutrophil cytoplasmic antibody associated vasculitis (ANCA-AAV), just two weeks after receiving his vaccination.

ANCA testing revealed the presence of proteinase-3 ANCA, and a diagnosis of