Case report
Ischaemic stroke and influenza A H1N1 vaccination: a case report
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Submission date: 2010-04-23
Final revision date: 2010-07-27
Acceptance date: 2010-08-07
Online publication date: 2011-05-17
Publication date: 2011-05-17
Arch Med Sci 2011;7(2):345–348
We report a 75-year-old male patient who suffered posterior circulation ischaemia after influenza A/H1N1 vaccination. Vaccination provokes a variable magnitude of inflammatory and immunological response that modifies the risk for ischaemic stroke. Whereas a causal relation between vaccination and ischaemic stroke is still unsettled, an inflammatory/immunological response after vaccination may trigger thrombosis superimposing a pre-existing prothrombotic state. Careful monitoring is strongly suggested for individuals who received H1N1 vaccine, especially those with high ischaemic stroke risk.