RT Journal Article SR Electronic T1 Secondary immune thrombocytopenia supposedly attributable to COVID-19 vaccination JF BMJ Case Reports JO BMJ Case Reports FD BMJ Publishing Group Ltd SP e242220 DO 10.1136/bcr-2021-242220 VO 14 IS 5 A1 Omar Fueyo-Rodriguez A1 Benjamin Valente-Acosta A1 Rodolfo Jimenez-Soto A1 Yvette Neme-Yunes A1 Sergio Ignacio Inclán-Alarcón A1 Roxana Trejo-Gonzalez A1 Miguel Ángel García-Salcido YR 2021 UL http://casereports.bmj.com/content/14/5/e242220.abstract AB Immune thrombocytopenia (ITP) has been widely reported as a complication of SARS-CoV-2 infection, but to our knowledge, there have been no reports on the association of the COVID-19 vaccine with thrombocytopenia. Here, we report a case of secondary ITP in a patient who was recently immunised with the messenger RNA COVID-19 vaccine BNT162b2 (Pfizer–BioNTech).