Answers are grounded in this paper and cite their sources.
We report a case of an elderly man who developed myositis of the deltoid muscle 8 days after influenza vaccination. Adverse reactions to influenza vaccine are generally immediate reactions. However, delayed-type hypersensitivity reactions, although rare, can occur after routine influenza vaccination.
No takes yet. Share an insight, caveat, or question.
Urayoshi et al. (2014) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: