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Frequency of positive anti-PF4/polyanion antibody...
Journal article

Frequency of positive anti-PF4/polyanion antibody tests after COVID-19 vaccination with ChAdOx1 nCoV-19 and BNT162b2

Abstract

Vaccination using the adenoviral vector COVID-19 vaccine ChAdOx1 nCoV-19 (AstraZeneca) has been associated with rare vaccine-induced immune thrombotic thrombocytopenia (VITT). Affected patients test strongly positive in platelet factor 4 (PF4)/polyanion enzyme immunoassays (EIAs), and serum-induced platelet activation is maximal in the presence of PF4. We determined the frequency of anti-PF4/polyanion antibodies in healthy vaccinees and …

Authors

Thiele T; Ulm L; Holtfreter S; Schönborn L; Kuhn SO; Scheer C; Warkentin TE; Bröker BM; Becker K; Aurich K

Journal

Blood, Vol. 138, No. 4, pp. 299–303

Publisher

American Society of Hematology

Publication Date

July 29, 2021

DOI

10.1182/blood.2021012217

ISSN

0006-4971