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Thrombosis and Thrombocytopenia after ChAdOx1 nCoV-19 Vaccination

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Título

Thrombosis and Thrombocytopenia after ChAdOx1 nCoV-19 Vaccination

Materia

Descripción

We report findings in five patients who presented with venous thrombosis and thrombocytopenia 7 to 10 days after receiving the first dose of the ChAdOx1 nCoV-19 adenoviral vector vaccine against coronavirus disease 2019 (Covid-19).

Fecha

2021-04-09

Citación

Schultz, Nina H., Ingvild H. Sørvoll, Annika E. Michelsen, Ludvig A. Munthe, Fridtjof Lund-Johansen, Maria T. Ahlen, Markus Wiedmann, Anne-Hege Aamodt, Thor H. Skattør, Geir E. Tjønnfjord, and Pål A. Holme. 2021. "Thrombosis and Thrombocytopenia after ChAdOx1 nCoV-19 Vaccination." New England Journal of Medicine.

Resumen

We report findings in five patients who presented with venous thrombosis and thrombocytopenia 7 to 10 days after receiving the first dose of the ChAdOx1 nCoV-19 adenoviral vector vaccine against coronavirus disease 2019 (Covid-19). The patients were health care workers who were 32 to 54 years of age. All the patients had high levels of antibodies to platelet factor 4–polyanion complexes; however, they had had no previous exposure to heparin. Because the five cases occurred in a population of more than 130,000 vaccinated persons, we propose that they represent a rare vaccine-related variant of spontaneous heparin-induced thrombocytopenia that we refer to as vaccine-induced immune thrombotic thrombocytopenia.

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Free online on NEJM.

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