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Ischaemic stroke and influenza A H1N1 vaccination: a case report
Yi-Pin Lin1, Tzu-Hui Li, Wei-Hsi Chen
1Department of Neurology, Chang Gung Memorial Hospital-Kaohsiung Medical Center, and College of Medicine, Chang Gung University, Kaohsiung, Taiwan.
Abstract:
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.
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