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FDA Reverses mRNA Flu Vaccine Decision

43:16 recording · AUTO · 2 speakers

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Brief overview

Vaccine-preventable viruses are surging while federal regulators undermine confidence, and their damage reaches far beyond the lungs.

  1. Measles is never a mild childhood illnessBeyond rash and pneumonia, immune amnesia wipes out 30% to 80% of immune memory, and SSPE appears six to eight years after recovery.
  2. Regulatory whiplash is costing vaccine investmentPrasad moved the goalposts on Moderna's flu vaccine after the data were in, and companies responded by closing divisions and pulling back from vaccines.
  3. Respiratory viruses attack the heart and metabolismNearly one in five hospitalized RSV patients had a cardiac event, and SARS-CoV-2 infection raised type 2 diabetes risk by about 20%.
Executive Summary AI
  • Daniel Griffin and Vincent Racaniello open with the FDA reversing course to review Moderna's mRNA flu vaccine, after Prasad rejected an already agreed plan to compare it with the standard flu shot and then settled on licensure for ages 50 to 64 with more data required for 65 and over.2:31
  • Griffin previews a New England Journal of Medicine paper on VIT, in which antibody proteomics from 21 patients and immunoglobulin light chain sequencing from 100 patients found a shared IGLV3-21 allele plus a K31E somatic hypermutation that misdirects antibodies onto platelet factor 4 after adenoviral vector vaccination.6:45
  • Measles outbreaks keep growing: South Carolina is at 962 confirmed cases with almost 900 of them unvaccinated and nearly half aged 5 to 11, Utah has confirmed 300 cases now spreading in Salt Lake County, and a Florida university outbreak has passed 40 people.11:39
  • Griffin walks through why measles is severe, including immune amnesia, where measles virus uses the SLAM receptor on T and B memory cells so a mild case costs about 30% of the antibody and T-cell repertoire and a severe case 70% to 80%.17:25
  • Two studies close the virology round-up: a meta-analysis of 25 studies of hospitalized RSV patients found 19.2% had any cardiac event, 15.7% heart failure and 5.4% acute coronary syndrome, while a British Columbia cohort of over 2 million people found about a 20% higher risk of type 2 diabetes after SARS-CoV-2 infection with no association in the vaccinated subgroups.23:15
Key Quote
“If we try, we may still fail.”
— Daniel Griffin1:35
Key Quote
“Well, Bhattacharya doesn't do anything at either place, so it's no problem to have two jobs where you do nothing. I mean, this is crazy, right?”
— Daniel Griffin5:36
Key Quote
“If we had comprehensive vaccination, there would be no cases of measles in the U.S. as there was in 2000, right?”
— Vincent Racaniello14:08