In correspondence published in The New England Journal of Medicine, researchers from Massachusetts General Hospital note that Phase 3 clinical data from the Moderna vaccine trial did show delayed skin hypersensitivity in a small number of the more than 30,000 trial participants. However, the authors say the large, red, sometimes raised, itchy or painful skin reactions were never fully characterized or explained, and they warn clinicians may not be prepared to recognize them and guide patients on treatment options and completion of the second dose of the vaccine. Credit: Massachusetts General Hospital ========================================================== These reactions should not discourage patients from...