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Nature 592, 334-335 (2021)
Updates & Corrections
Correction 28 April 2021: An earlier version of this story referred to heparin as a blood-thinning drug.
Greinacher, A. et al. N. Engl. J. Med. https://doi.org/10.1056/NEJMoa2104840 (2021).
Schultz, N. H. et al. N. Engl. J. Med. https://doi.org/10.1056/NEJMoa2104882 (2021).