Thrombotic Thrombocytopenic Purpura Following Chadox1 Ncov-19 Vaccination: A Case Report Publisher



Shateri Amiri B^{1, 2, 3, 4, 5} ; Radkhah H^{1, 2, 3, 4, 5} ; Taslimi R^{1, 2, 3, 4, 5} ; Shahbazi Dastjerdi Z^{1, 2, 3, 4, 5} ; Khadembashiri MM^{1, 2, 3, 4, 5} ; Gholizadeh Mesgarha M^{1, 2, 3, 4, 5} ; Rahimipour Anaraki S^{1, 2, 3, 4, 5} Show Affiliations
Source: IDCases Published:2023

Abstract

Vaccine-associated thrombotic thrombocytopenic purpura (TTP) is a rare type of acquired TTP recently reported after COVID-19 vaccination. Merely four cases are ascribed to the ChAdOx1 nCoV-19 vaccine in the medical literature till the preparation of this study. In this case report, we describe a 43-year-old man who developed symptoms of TTP four days after receiving the second dose of the ChAdOx1 nCoV-19 vaccine. Peripheral blood smear demonstrated multiple schistocytes. Given a high plasmic score, he received plasma exchange, corticosteroids, and rituximab, and later, low ADAMTS 13 activity and high-titer ADAMTS inhibition antibody confirmed the diagnosis of COVID-19 vaccine-associated TTP. COVID-19 vaccine-associated TTP is an infrequent consequence of SARS-CoV-2 vaccination but with a substantial mortality rate which must be considered as one of the crucial differential diagnoses of post-COVID-19 vaccine thrombocytopenia besides vaccine-induced immune thrombotic thrombocytopenia and Immune thrombocytopenic purpura. © 2023 The Authors