Multisystem Inflammatory Syndrome after SARS-CoV-2 Infection and COVID-19 Vaccination

Abstract

We report 3 patients in California, USA, who experienced multisystem inflammatory syndrome (MIS) after immunization and severe acute respiratory syndrome coronavirus 2 infection. During the same period, 3 adults who were not vaccinated had MIS develop at a time when ≈7% of the adult patient population had received >1 vaccine.

Keywords

• multisystem inflammatory syndrome in children
• multisystem inflammatory syndrome in adults
• SARS-CoV-2
• SARS-CoV-2 vaccine
• COVID-19
• severe acute respiratory syndrome coronavirus 2