Prof Jeffrey S Morris

@jsm2334.bsky.social

George S Pepper Professor of Public Health & Preventative Medicine; Biostats, Stats & Data Science, Lifelong learner & truth seeker; Views my own & not employer’s

MIT’s UnDark published this interview with me discussing a few points from my new white paper on the U.S. vaccine safety monitoring system, and follow up points related to myocarditis, childhood vaccine rollouts, and the new Vaers report coming from the fda undark.org/2025/12/19/i...

Interview: How the U.S. Government Monitors Vaccine Safety

Biostatistician Jeffrey Morris discusses his analysis of the vaccine monitoring system — and how it could be improved.

undark.org

My paper summarizing the multi-component US vaccine safety monitoring system has just posted online. The key components of the system include: 1. pre-licensure clinical trials 2. passive monitoring (VAERs) 3. active monitoring (VSD, PRISM) 4. clinical analysis (CISA).

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I’ve written an article for The Conversation about the so-called “Inconvenient Study,” described as a landmark study demonstrating vaccines cause chronic health conditions in children, highlighting its major design flaws and statistical problems that prevent it from showing what its promoters claim

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ACIP voted to drop the MMRV combo shot for kids <4 due to seizure risk. But strangely, they blocked coverage under CMS/private plans while still allowing it under VFC. No explanation given — even panelists seemed puzzled. End result: parents lose an option, but only for a random subset of kids.

A US senate subcommittee was told this unpublished vaccine study was 'the most important ever.' Henry Ford Health now confirms why it was never published: it failed scientific standards. Here's what's actually wrong with the study: jakescottmd.substack.com/p/why-the-senates-most-important-vaccine

Why the Senate's 'Most Important Vaccine Study Ever' Was Never Published

The fatal flaws that made this study unpublishable

jakescottmd.substack.com

1/12 Senate hearings highlighted a Henry Ford Health System study, billed as “An Inconvenient Study,” touted as proof vaccines raise childhood chronic-disease risk and allegedly suppressed. I reconstructed details from public sources; here are findings + concerns.

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People claim all kinds of things on social media. But how do we decide what is true, false, or uncertain — and how much should those judgments depend on the scientific evidence in the available literature?

New York Magazine just published an in-depth article about Mark and David Geier, tracing Mark’s professional journey—from his emergence as a prominent anti-vaccine advocate to the controversy that led to the loss of his medical license nymag.com/intelligence...

The Father-and-Son Duo Who Toppled Our Trust in Vaccines

Thirty years ago a doctor named Mark Geier spread fears about vaccines and autism. Now his son, David, is reportedly looking for a link for RFK Jr.

nymag.com

RFK is fast to accuse others of financial conflict of interest with pharma to discredit and silence them. How can he refuse to commit to not financially benefit on the order of many of millions of $$ from urging people to sue pharma companies for vaccine injuries,

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