1.
Tidsskr Nor Laegeforen
; 1412021 04 11.
Artigo
em Norueguês
| MEDLINE
| ID: mdl-33847107
2.
N Engl J Med
; 384(22): 2124-2130, 2021 06 03.
Artigo
em Inglês
| MEDLINE
| ID: mdl-33835768
RESUMO
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.