Case Reports
Vol. 1 No. 2 (2022)
Vaccine-induced immune thrombotic thrombocytopenia following ChAdOx1 nCoV-19 vaccine: report of two cases
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All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.
Received: 1 March 2022
Accepted: 6 May 2022
Accepted: 6 May 2022
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Vaccination with ChAdOx1 nCoV-19 can result in vaccine-induced immune thrombotic thrombocytopenia (VITT). This phenomenon mimics heparin-induced thrombocytopenia, yet it does not require heparin as a trigger. This case report highlights the potentially lifethreatening complication associated with ChAdOx1 nCov-19 vaccine, clinical presentation, diagnostic approach, and treatment. We report two cases of vaccine-induced immune thrombotic thrombocytopenia after receiving the first dose of the ChAdOx1 nCoV-19 vaccine. We attribute these thrombotic conditions to the vaccine due to the remarkable temporal relationship. The proposed mechanism of VITT is a production of antibodies against platelet factor-4 resulting in massive platelet activation. Healthcare providers should be aware of the possibility of such a fatal complication, and the vaccine recipients should be warned about the symptoms of VITT.
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Citations
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How to Cite
1.
Santoro RC, Minici R, Leotta M, Falbo M, Elia LC, Leo F, et al. Vaccine-induced immune thrombotic thrombocytopenia following ChAdOx1 nCoV-19 vaccine: report of two cases. Bleeding Thromb Vascul Biol [Internet]. 2022 May 23 [cited 2026 Jan. 23];1(2). Available from: https://www.btvb.org/btvb/article/view/23
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