Unmasked: Vaccine Safety Signals

A structured presentation of the U.S. Senate Permanent Subcommittee on Investigations' April 2026 interim report and the underlying records published with it. The site centers the evidence: contemporaneous emails, the masking phenomenon in VAERS data mining, and the MGPS / RGPS comparison that drives the story.

Key Points

The FDA's vaccine safety monitoring system has a known flaw called “masking.” When similar products dominate the database, real warning signs can get hidden.
This happened with the COVID-19 mRNA vaccines (Pfizer and Moderna), where masking was roughly eight times more likely than with other vaccines.
Rave Harpaz et al., Signaling COVID-19 Vaccine Adverse Events, Drug Safety (2022).
External source →
A senior FDA scientist, Dr. Ana Szarfman, applied a better method (RGPS) and found hidden safety signals, including sudden cardiac death, Bell's palsy, heart attacks, blood clots, and dementia.
PSI-HHS-000008257443-44 (with attachment).
PSI-HHS-000008257443-44Read document →
,
PSI-HHS-000008257443-44 (with attachment).
PSI-HHS-000008257443-44Read document →
When she reported these findings to FDA leadership in 2021, she was told to cease and desist out of concern her work could fuel anti-vaccine sentiment.
PSI-HHS-000002213753; PSICOVID_00017246-47. See also, Testimony of Dr. Peter Marks before the Select Subcomm. on the Coronavirus Pandemic Comm. on Oversight and Accountability, U.S. House of Representatives, Feb. 15, 2024.
PSI-HHS-000002213753; PSICOVID_00017246-47Read PDF (page 26) →View as text →See also: external source →
The FDA never adopted the improved method, and the routine weekly COVID-19 vaccine data-mining reports were discontinued in July 2022 — around the same time outside groups were filing public records requests for them.
PSI-HHS-000002480132.
PSI-HHS-000002480132Read PDF (page 32) →View as text →

Footnote numbers throughout this site match the footnote numbers in the U.S. Senate Permanent Subcommittee on Investigations' April 29, 2026 interim report. Read the full report (PDF) →

Explainer

What is signal masking?
A plain-language walkthrough.

Timeline

Dated chronology, November 2020 to today, with citations and source documents.

Document archive

Searchable record of every Subcommittee-published exhibit.