Up to day 7, vaccinated episodes had lower adjusted IRRs than unvaccinated, although the interaction did not reach statistical significance (p = 0.108 for days 1–3; p = 0.095 for days 4–7).
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Influenza vaccination attenuates acute myocardial infarction and stroke risk following influenza infection: a register-based, self-controlled case series study, Denmark, 2014 to 2025.
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0.1080
0.1080