COVID-19 Vaccine Updates: VITT Has High Mortality, Myocarditis Is Benign Short-Term

Recipients of AstraZeneca’s vaccine hospitalized with vaccine-induced immune thrombocytopenia and thrombosis (VITT) had overall mortality of 22%, NEJM study finds. JAMA reports 15 children who had myocarditis following Pfizer/BioNTech vaccine were mildly affected. Efficacy of Moderna vaccine in adolescents and durability of Pfizer vaccine in cancer treatment recipients is also reported.