A case of multisystem inflammatory syndrome (MIS-A) in an adult woman 18 days after COVID-19 vaccination.

We discuss a case of a young woman, presenting a constellation of clinical and biochemical features meeting the current case definition of multisystem inflammatory syndrome in adults (MIS-A), 18 days after receiving her first dose of the Oxford/AstraZeneca vaccine. Therapy by means of intravenous immunoglobulins was initiated, leading to clinical and biochemical recovery. Although a relationship between MIS-A and the preceding vaccination cannot be confirmed, it can also not be excluded, given the temporal association and the fact that there were no indicators of a preceding SARS-CoV-2 infection.