Nature Communications (Aug 2022)

Second-dose ChAdOx1 and BNT162b2 COVID-19 vaccines and thrombocytopenic, thromboembolic and hemorrhagic events in Scotland

  • Colin R. Simpson,
  • Steven Kerr,
  • Srinivasa Vittal Katikireddi,
  • Colin McCowan,
  • Lewis D. Ritchie,
  • Jiafeng Pan,
  • Sarah J. Stock,
  • Igor Rudan,
  • Ruby S. M. Tsang,
  • Simon de Lusignan,
  • F. D. Richard Hobbs,
  • Ashley Akbari,
  • Ronan A. Lyons,
  • Chris Robertson,
  • Aziz Sheikh

DOI
https://doi.org/10.1038/s41467-022-32264-6
Journal volume & issue
Vol. 13, no. 1
pp. 1 – 7

Abstract

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Here, Simpson et al. analyze data from 3.6 million COVID-19 vaccine second doses (ChAdOx1 and BNT162b2) in Scotland for risk of thrombocytopenic, thromboembolic and hemorrhagic events. Borderline increased risks of immune thrombocytopenic purpura and cerebral venous sinus thrombosis were found for the ChAdOx1 vaccine. These events were rare and usually short-lived.