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.
Pyrexia Reports for Measles, Mumps & Rubella (MMR II)
#1 most reported symptom for this vaccine
Pyrexia and Measles, Mumps & Rubella (MMR II)
Pyrexia has been reported 21,291 times in association with Measles, Mumps & Rubella (MMR II) vaccination in VAERS. This represents 23.7% of all 89,976 reports for this vaccine.
Among these reports, 146 mentioned death (0.69%) and 2,063 involved hospitalization (9.7%).
Pyrexia is the #1 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.
What This Means
Seeing 21,291 reports of Pyrexia after Measles, Mumps & Rubella (MMR II) vaccination may seem alarming, but context is critical.
The mortality rate among these reports is very low at 0.69%, suggesting most cases are non-fatal.
Important Context
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Quick Facts
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Data Source
This data comes from the Vaccine Adverse Event Reporting System (VAERS), jointly managed by CDC and FDA.