Important: VAERS reports alone cannot determine if a vaccine caused an adverse event. Reports may contain incomplete, inaccurate, or unverified information. Correlation does not equal causation.
#1231 most reported symptom for this vaccine
Pericardial effusion has been reported 9 times in association with Measles, Mumps & Rubella (MMR II) vaccination in VAERS. This represents 0.0% of all 89,976 reports for this vaccine.
Among these reports, 2 mentioned death (22.22%) and 7 involved hospitalization (77.8%).
Pericardial effusion is the #1231 most frequently reported symptom for Measles, Mumps & Rubella (MMR II) out of 2292 total symptoms.
Disclaimer: VAERS reports describe events that occurred after vaccination but do not establish that the vaccine caused the event. Many reported symptoms may be coincidental or related to underlying conditions.
Seeing 9 reports of Pericardial effusion after Measles, Mumps & Rubella (MMR II) vaccination may seem alarming, but context is critical.
The 22.22% mortality rate among these reports is elevated, but this reflects the severity of the condition itself rather than vaccine causation.
This data comes from the Vaccine Adverse Event Reporting System (VAERS), jointly managed by CDC and FDA.