Pfizer COVID-19 Vaccine Linked to Heart Inflammation Risk in Real-World Study

A nurse prepares a Pfizer BioNTech COVID-19 vaccination as part of a vaccine drive by the Fernandeno Tataviam Band of Mission Indians in Arleta, Los Angeles, Calif., on Aug. 23, 2021. Lucy Nicholson/Reuters

Real-world data from Israel linked Pfizer’s COVID-19 vaccine to an elevated risk of heart inflammation, researchers said this week.

Israeli scientists found that vaccination likely caused myocarditis, or heart inflammation, in one to five people per 100,000 who wouldn’t have otherwise suffered the condition.