Jessica McDonald (@jjmcdona) 's Twitter Profile
Jessica McDonald

@jjmcdona

Science editor for @factcheckdotorg's SciCheck. Previously @WHYYNews, @SciFri & AAAS Mass Media Fellow at @KUNC. @YaleIBIO immunology PhD.

ID: 14271418

linkhttps://www.factcheck.org/ calendar_today01-04-2008 02:02:46

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(((Dorit Reiss))) (@doritmi) 's Twitter Profile Photo

Dr. Retsef Levi claims about Nirsevimab - which, as Dr. Kulldorff pointed out, is not actually the product being voted on right now - have been pre bunked here: factcheck.org/2023/08/sciche… See also: bsky.app/profile/kevina…

Jessica McDonald (@jjmcdona) 's Twitter Profile Photo

Here's our story providing important context to the announcements made in yesterday's #ACIP meeting that the new panel intends to revisit both hepatitis B vaccination at birth and the "cumulative effect" of the immunization schedule. factcheck.org/2025/06/rfk-jr…

Helen Branswell 🇨🇦 (@helenbranswell) 's Twitter Profile Photo

A very big study from Denmark generates some reassuring findings about aluminum in childhood vaccines, finding no association between aluminum and development of a number of illnesses, including asthma. statnews.com/2025/07/14/alu…

DrDemetre (@dr_demetre) 's Twitter Profile Photo

My resignation letter from CDC. Dear Dr. Houry, I am writing to formally resign from my position as Director of the National Center for Immunization and Respiratory Diseases at the Centers for Disease Control and Prevention (CDC), effective August 28, 2025, close of business.

Mark S. Zaid (@markszaidesq) 's Twitter Profile Photo

Abbe Lowell and I represent CDC Director Susan Monarez. Contrary to govt statements, Dr. Monarez has neither resigned nor yet been fired. She will not resign. We have issued the following statement:

Abbe Lowell and I represent <a href="/CDCgov/">CDC</a> Director Susan Monarez. Contrary to govt statements, Dr. Monarez has neither resigned nor yet been fired. She will not resign. We have issued the following statement:
Dan Diamond (@ddiamond) 's Twitter Profile Photo

Update — hearing that the White House has formally fired Monarez, per two admin sources. Monarez's lawyers said earlier tonight she had neither resigned nor been fired

Andrew Revkin 🌎 ✍🏼 🪕 ☮️ (@revkin) 's Twitter Profile Photo

Øystein Sjølie The Honest Broker The 400-plus-page response to the Trump-commissioned climate science critique will be posted here Tuesday morning at 9 AM Eastern: sites.google.com/tamu.edu/doere… You can discuss it with LIVE with me and a couple of the authors (Andrew Dessler, Bob Kopp) at 230 Eastern: LinkedIn

<a href="/OysteinSjolieEn/">Øystein Sjølie</a> <a href="/RogerPielkeJr/">The Honest Broker</a> The 400-plus-page response to the Trump-commissioned climate science  critique will be posted here Tuesday morning at 9 AM Eastern: sites.google.com/tamu.edu/doere…

You can discuss it with LIVE with me and a couple of the authors (<a href="/AndrewDessler/">Andrew Dessler</a>, Bob Kopp) at 230 Eastern: 

LinkedIn
Jessica McDonald (@jjmcdona) 's Twitter Profile Photo

Dr. Jospeh Fraiman is reportedly on a list of new ACIP appointees. He's familiar to us as an author of a flawed paper on COVID vaccine safety and an expert Gov. DeSantis put on a roundtable in 2022 to argue against COVID-19 vaccination. factcheck.org/2022/12/sciche…

Jessica McDonald (@jjmcdona) 's Twitter Profile Photo

So many claims in the autism presser, many of them familiar to FactCheck.org! Check them out here, including Trump's more novel claim about giving the vaccines in MMR separately. (That goes back to Andrew Wakefield & it's not even possible to do!) factcheck.org/2025/09/repeat…

Jessica McDonald (@jjmcdona) 's Twitter Profile Photo

Trump is back to calling global warming a "hoax." We break down some of his claims in his U.N. speech. factcheck.org/2025/09/trump-…

Benjamin Mazer (@benmazer) 's Twitter Profile Photo

Secretary Kennedy President Donald J. Trump This is pretty funny, you've posted a lengthy video 'debunking' a chart you simply misread. The figure shows the decline in INFECTIONS, not deaths. This is clearly due to mass vaccination programs.

<a href="/SecKennedy/">Secretary Kennedy</a> <a href="/POTUS/">President Donald J. Trump</a> This is pretty funny, you've posted a lengthy video 'debunking' a chart you simply misread. The figure shows the decline in INFECTIONS, not deaths. This is clearly due to mass vaccination programs.
Jessica McDonald (@jjmcdona) 's Twitter Profile Photo

One of my wonkiest yet. A deep dive on the single data point from Pfizer's COVID-19 maternal vaccine trial that's being used to argue against vaccination during pregnancy. factcheck.org/2025/10/vaccin…