Fatal autoimmune acquired factor XIII/13 deficiency after COVID‐19 vaccination
A 78‐year‐old woman with no personal or family history of abnormal bleeding noticed a bruise on her thigh 2 weeks after her second COVID‐19 mRNA vaccination (Pfizer‐BioNTech). Her skin bruise persisted and on day 38, a new bruise appeared on her left hand. On day 50, she visited a hospital because of pain and swelling in the left hand.
Shimoyama S, Kanisawa Y, Ono K, Souri M, Ichinose A. First and fatal case of autoimmune acquired factor XIII/13 deficiency after COVID‐19/SARS‐CoV‐2 vaccination. American journal of hematology. 2022 Feb;97(2):243.