Novavax COVID-19 Vaccine Associated With Heart Inflammation: Study

Syringes with a shot of Novavax's COVID-19 vaccine in Berlin, Germany, on Feb. 28, 2022. Carsten Koall/Getty Images

A higher-than-expected number of heart inflammation cases have occurred in people who received Novavax’s COVID-19 vaccine, researchers reported in a new study.

Sixty-one cases of myocarditis, pericarditis, or both following a Novavax vaccination were reported in the World Health Organization’s vaccine safety database through Aug. 23, 2022, Spanish researchers found.