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Here, we report a case of secondary ITP in a patient who was recently immunised with the messenger RNA COVID-19 vaccine BNT162b2 (Pfizer\u2013BioNTech).<\/jats:p>","DOI":"10.1136\/bcr-2021-242220","type":"journal-article","created":{"date-parts":[[2021,5,31]],"date-time":"2021-05-31T12:16:30Z","timestamp":1622463390000},"page":"e242220","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":31,"title":["Secondary immune thrombocytopenia supposedly attributable to COVID-19 vaccination"],"prefix":"10.1136","volume":"14","author":[{"given":"Omar","family":"Fueyo-Rodriguez","sequence":"first","affiliation":[{"name":"Centro Medico ABC, Ciudad de M\u00e9xico, Mexico"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9885-3594","authenticated-orcid":false,"given":"Benjamin","family":"Valente-Acosta","sequence":"additional","affiliation":[{"name":"Centro Medico ABC, Ciudad de M\u00e9xico, Mexico"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rodolfo","family":"Jimenez-Soto","sequence":"additional","affiliation":[{"name":"Centro Medico ABC, Ciudad de M\u00e9xico, Mexico"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yvette","family":"Neme-Yunes","sequence":"additional","affiliation":[{"name":"Centro Medico ABC, Ciudad de M\u00e9xico, Mexico"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sergio Ignacio","family":"Incl\u00e1n-Alarc\u00f3n","sequence":"additional","affiliation":[{"name":"Centro Medico ABC, Ciudad de M\u00e9xico, Mexico"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Roxana","family":"Trejo-Gonzalez","sequence":"additional","affiliation":[{"name":"Centro Medico ABC, Ciudad de M\u00e9xico, Mexico"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Miguel \u00c1ngel","family":"Garc\u00eda-Salcido","sequence":"additional","affiliation":[{"name":"Mexico\u2019s National Institute of Public Health, Mexico, Mexico"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2021,5,31]]},"reference":[{"key":"2025082710204212000_14.5.e242220.1","unstructured":"ECDC . 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