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How could a COVID vaccine cause blood clots? Scientists race to investigate

Researchers are searching for possible links between unusual clotting and the Oxford–AstraZeneca coronavirus vaccine.
  1. Heidi Ledford
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The very rare occurrence of a mysterious blood-clotting disorder among some recipients of the Oxford–AstraZeneca COVID-19 vaccine has got researchers scrambling to uncover whether, and if so, how the inoculation could trigger such an unusual reaction.

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Nature 592, 334-335 (2021)

doi: https://doi.org/10.1038/d41586-021-00940-0

Updates & Corrections

  • Correction 28 April 2021: An earlier version of this story referred to heparin as a blood-thinning drug.

References

  1. Greinacher, A. et al. N. Engl. J. Med. https://doi.org/10.1056/NEJMoa2104840 (2021).

    Article  Google Scholar 

  2. Schultz, N. H. et al. N. Engl. J. Med. https://doi.org/10.1056/NEJMoa2104882 (2021).

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