To the Editor: Blumenthal et al. (April 1 issue)1 report delayed injection-site reactions in 12 patients who had received the mRNA-1273 vaccine against SARS-CoV-2. We observed a case of a delayed local reaction in a 38-year-old woman who had received the first dose of the BNT162b2 vaccine. Pain at the injection site had completely resolved within 2 days after the vaccination. Six days after the injection, erythema of the upper arm (Figure 1A) with associated numbness of the fingers appeared. These symptoms resolved within 5 days. [...]
Baeck, M., Marot, L., & Belkhir, L. (2021). Delayed Large Local Reactions to mRNA Vaccines. The New England journal of medicine, 384(24), e98 [1-3]. https://doi.org/10.1056/NEJMc2104751 (Original work published 2021)