On this, our 303rd Evolutionary Lens livestream, we discuss the recommendation to stop vaccinating newborns against Hepatitis B, as just handed down by ACIP (Advisory Committee on Immunization Practices) for the CDC. Why were newborns whose mothers do not have Hep B, being vaccinated against a disease that is contracted through sexual activity and dirty needles? We discuss claims of “safe and effective,” risk stratification, the childhood vaccine schedule, and what “individual-based decision-making” will mean for parents and doctors. Then, new research: tattoo ink induces inflammation in lymph nodes, and changes the immune response to vaccination. Finally: an homage to Tom Stoppard, playwright extraordinaire, author of Rosencrantz and Guildenstern are Dead, Arcadia, and so much more. RIP. ***** Our sponsors: CrowdHealth: Pay for healthcare with crowdfunding instead of insurance. It’s way better. Use code DarkHorse at http://JoinCrowdHealth.com to get 1st 3 months for $99/month. ARMRA: Colostrum is our first food and can help restore your health and resilience as an adult. Go to http://www.tryarmra.com/DARKHORSE to get 15% off your first order. Helix: Excellent, sleep-enhancing, American-made mattresses. Go to http://www.HelixSleep.com/DarkHorse to get 27% sitewide. ***** Join us on Locals! Get access to our Discord server, exclusive live streams, live chats for all streams, and early access to many podcasts: https://darkhorse.locals.com/ Heather’s newsletter, Natural Selections (subscribe to get free weekly essays in your inbox): https://naturalselections.substack.com Our book, A Hunter-Gatherer’s Guide to the 21st Century, is available everywhere books are sold, including from Amazon: https://amzn.to/3AGANGg (commission earned) Check out our store! Epic tabby, digital book burning, saddle up the dire wolves, and more: https://darkhorsestore.org ***** Mentioned in this episode: ACIP Hep B recommendation: https://www.cdc.gov/media/releases/2025/2025-acip-recommends-individual-based-decision-making-for-hepatitis-b-vaccine-for-infants-born-to-women.html Retsef Levi on Hep B rec: https://x.com/cdcgov/status/1996967080793358366 RFK on vaccines: https://x.com/seckennedy/status/1997104582128754854 Capucetti et al 2025. Tattoo ink induces inflammation in the draining lymph node and alters the immune response to vaccination. Proceedings of the National Academy of Sciences, 122(48), p.e2510392122: https://www.pnas.org/doi/pdf/10.1073/pnas.2510392122 <a rel="payment" href="http://darkhorse.locals.com/">Support the show</a>

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