This podcast episode, Twiv 1221, covers critical topics in virology and science policy. The hosts discuss new research on endemic coronaviruses (eCoVs) and their potential to induce cross-reactive, non-neutralizing antibodies that could offer partial protection against SARS-CoV-2 by engaging FC receptors, suggesting a path towards a multi-coronavirus vaccine. They also delve into a study identifying inherited IFNAR1 deficiency as a genetic predisposition for severe adverse reactions to live attenuated vaccines like measles and yellow fever, emphasizing the importance of genetic screening for vaccine safety. A significant portion of the episode is dedicated to criticizing recent US government actions, including substantial cuts to science funding (NSF, NIH), restrictions on international students, and alleged political interference in scientific research, highlighting concerns about the erosion of scientific integrity and pandemic preparedness.
Exploring Viruses and Science Policy: Insights from Twiv 1221
0:00 Introduction: The hosts, Vincent Racaniello, Alan Dove, and Angela Mingarelli, introduce Twiv episode 1221, recorded on May 23, 2025, from various cloudy and cool locations. They briefly mention Microbe.TV and encourage listener support.
0:46 Upcoming Conference: Discussion of the American Society for Virology (ASV) meeting, hosted by McGill University in Montreal from July 14th to 17th, with practical travel advice for attendees.
5:43 US Science Funding Cuts: Vincent highlights recent cuts to science funding in the US.
6:20 National Science Foundation (NSF) Cuts: Grants funded are down 51% across all areas, including a $650 million cut to STEM education.
8:08 Harvard University Funding Loss: Over 1,000 grants, totaling $2.4 billion, have been lost at Harvard University.
8:52 Ban on International Students: Federal judge Allison Burroughs discusses the Trump administration's "crazy" ban on Harvard bringing in more international students, deemed "completely illegal."
10:15 NIH Grant Terminations by "Doge": Sworn testimonies reveal that "Elon Musk's Doge" (a non-governmental entity allowed access by the Trump administration) directed NIH officials to terminate specific grants, using "stupid excuses" about "waste."
12:47 Impact on Pandemic Preparedness: Cancellation of COVID grants is criticized for hindering research vital for predicting and preparing for future pandemics.
13:45 Importance of Voting: The hosts emphasize the need for citizens to vote to counter anti-science policies.
14:30 Endemic Coronavirus Research: A Journal of Virology paper investigates the association between endemic coronavirus (eCoV) infection and SARS-CoV-2 cross-reactive antibodies.
16:24 Common Cold Coronaviruses: Four main eCoVs (229E, HKU1, NL63, OC43) cause mild respiratory disease and are part of the "common cold."
17:07 Cross-Protection Hypothesis: Previous eCoV infection has been suggested to lead to less severe COVID-19, but the mechanism is unclear.
20:10 Vaccine Development Goal: The ultimate goal is a universal coronavirus vaccine.
28:41 Focus on FC-Mediated Antibodies: The study found no difference in neutralizing antibodies or T-cell responses but focused on antibodies that bind to the FC portion of other cells for immune clearance.
34:36 Cross-Reactive Antibodies to S2: eCoV infection induces elevated levels of anti-SARS-CoV-2 S2 FC gamma R3A binding antibodies, which are cross-reactive and target the more conserved S2 region of the spike protein. These are not neutralizing but have an adaptive function, suggesting potential for protection.
44:50 Multi-Coronavirus Vaccine Strategy: This finding points to a strategy for a multi-coronavirus vaccine using an S2-based or consensus S2-based antigen to stimulate FC-binding antibodies, which could offer partial protection against novel pandemics.
46:27 Fucosylation Impact: The binding of FC to FC receptors depends on the fucosylation of the FC domain; therapeutic monoclonals for COVID were made without fucose (a-fucosylation) to improve binding.
49:46 IFNAR1 Deficiency and Vaccine Reactions: A Journal of Experimental Medicine paper discusses inherited IFNAR1 deficiency.
52:47 Live Attenuated Vaccines: There are 11 attenuated viral vaccines in worldwide use (e.g., OPV, MMR, yellow fever, rotavirus, varicella, dengue, smallpox, Zostavax, adenovirus, hepatitis A).
56:03 Rare Complications: Live vaccines can have rare, serious complications, often linked to inborn errors of immunity.
58:32 Genetic Predisposition: The paper highlights genetic predispositions, such as IFNAR1 deficiency, as causes of adverse reactions, emphasizing that the vaccines themselves are not inherently dangerous.
59:06 Patient Cases: Two patients with autosomal recessive IFNAR1 deficiency suffered severe reactions: one with disseminated measles vaccine strain infection (encephalitis) and another with a severe yellow fever vaccine reaction (renal and hepatic dysfunction). Both patients recovered and were otherwise healthy.
1:06:00 Defective Interferon Response: The IFNAR1 mutation leads to no functional receptor protein, resulting in major defects in type I interferon signaling and the inability of patient cells to control VSV, yellow fever, measles, influenza, and herpes simplex virus replication.
1:15:19 Paradox and Redundancy: The surprising observation that these patients are otherwise healthy suggests potential "leakiness" of the mutation in certain cell types or redundancy in the immune system.
1:18:40 Implications for Vaccine Safety: The findings suggest that cheaper genetic testing could allow screening newborns for such rare but serious mutations, providing legitimate medical exemptions for certain vaccines.
1:20:47 Debunking Misinformation: This research debunks claims by anti-vaccine proponents that the measles vaccine kills people; the discussed case is one of the only known deaths and occurred in an immunocompromised individual.
1:22:26 Patreon Shout-Out: A listener from Australia thanks the team for a Twiv shirt received via Patreon, highlighting the global impact of the podcast and concerns about US science policy.
1:24:35 Wikipedia Editing: A "bumbling biochemist" encourages listeners to get involved in Wikipedia editing to correct inaccuracies (e.g., in Google AI citations) and teach critical thinking.
1:26:38 Camera Setup Feedback: A listener praises the camera shot of Dr. Griffin in the studio and offers suggestions for studio improvements.
1:42:07 BSL2+ Clarification: A listener clarifies the BSL2+ biosafety designation, explaining it's a heightened BSL2 standard (e.g., for HIV research or live animal infections with BSL2 viruses) that adopts some BSL3 protocols but is not equivalent to full BSL3.
1:36:36 Walter Reed Biosystematics Unit Dissolution: News of the formal dissolution of WRBU, a 60-year partnership in entomological intelligence and vector-borne disease research, is shared as another example of government cutting important science.
1:38:07 Comfort from Theme Music: A listener describes feeling "comforted" by the Twiv theme music, akin to Pavlov's dog, because it signifies that "scientists have my back" during challenging times.
1:38:43 Threatening Letters to Journals: A US attorney is sending "vaguely threatening letters" to scientific journals, accusing them of being "partisans in various scientific debates" and questioning their funding, seen as an attempt to suppress information.
1:45:48 Angela's Pick: New contact lenses that convert near-infrared light into visible light for human vision, developed from earlier injectable nanoparticle research in mice.
1:49:00 Alan's Pick: A game development blog post arguing against despair in US politics, presenting a graphic showing that "did not vote" has been the largest voting bloc in every US presidential election for the past 50 years, except 2020.
1:52:59 Vincent's Pick: A YouTube video titled "How One Company Secretly Poisoned the Planet," detailing the history and environmental impact of PFAS (per- and polyfluoroalkyl substances) or "forever chemicals" used in Teflon and other products.
1:56:46 Outro: Hosts thank listeners, provide contact and support information, and look forward to the next episode.