Haunted by the Hanta Virus: The 325th Evolutionary Lens with Bret Weinstein and Heather Heying

May 9, 2026

AI Summary

5 min read

Haunted by the Hanta Virus: The 325th Evolutionary Lens

In April 2026, an outbreak of hantavirus on the MV Hondius, a cruise ship that left Argentina on the first of the month, produced eight cases (six confirmed, two suspected) and three deaths. The first death occurred on April 11. For most people, hantavirus is an obscure threat. For evolutionary biologists Bret Weinstein and Heather Heying, it is a pathogen they have been wary of since 1993, when an outbreak in the Four Corners region of the United States killed several people and made clear that the virus could be contracted by breathing aerosolized particles from the droppings of infected deer mice (Peromyscus). That knowledge shaped their household: their adult son recently remarked that unlike other parents, they had always been "very concerned about mouse droppings" and aggressive about eliminating any rodent presence in the home.

What the Ship Outbreak Probably Means

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What you'll learn

1 (00:04) **Opening and Framing the Episode** - Bret and Heather introduce the podcast and set up the two main topics: the hantavirus outbreak and the Washington State drought.
2 (13:30) **Hantavirus Background and the MV Hondius Outbreak** - Heather provides the basic facts of the hantavirus outbreak on a cruise ship, then delves into the biology and history of the virus.
3 (18:19) **The Strange Nature of the Outbreak and Possible Explanations** - The hosts argue that human-to-human transmission is unlikely, raising questions about the official narrative.
4 (26:42) **The Ivermectin Trigger and the WHO Response** - Bret describes how his inquiry about ivermectin's efficacy led to an AI shutdown and a direct response from the WHO.
5 (33:33) **The Deeper Game: From Bioweapons to Pandemic Manufacturing** - Bret presents his theory that the bioweapons industry has been repurposed into an "emergency-making industry."
6 (48:57) **The Economics of a Hantavirus Vaccine** - The hosts analyze why Moderna is developing an mRNA hantavirus vaccine, despite it being economically unviable from a public health perspective.
7 (65:25) **The AI as a Propaganda Tool and Ivermectin's Mechanisms** - The hosts discuss the implications of AI being gamed to shut down scientific inquiry, and review the robust evidence for ivermectin's broad antiviral action.

+ Full timestamped outline available in the app

Guests on this episode

Bret Weinstein Heather Heying

Show Notes

On this, our 325th Evolutionary Lens livestream, we discuss Hanta virus and drought. First: what is the natural history of Hantavirus, do any Hantaviruses transmit directly from human to human, and what is going on with the M.V. Hondius, the cruise ship on which Hantavirus has made a stand? Given its mechanisms of action, Ivermectin is likely to treat Hantavirus (a negative sense single-stranded RNA virus), but the WHO dismisses the possibility. Moderna is working on a Hantavirus vaccine, even though the Number Needed to Treat is sky high. What is going on? Then: in Washington state, we’re experiencing a very wet drought. The Department of Ecology has declared a drought (again), and the snow pack is low, but all other indicators—from rivers to reservoirs to soil moisture—are excellent. Cliff Mass, atmospheric scientist, puts the evidence in one place and calls bull on the drought diagnosis.

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Mentioned in this episode:

Hantavirus and the elders: https://asm.org/articles/2024/october/indigenous-knowledge-solved-mysterious-outbreak

Toledo et al 2022. Evidence for human-to-human transmission of hantavirus: a systematic review. The Journal of infectious diseases, 226(8): 1362-1371: https://academic.oup.com/jid/article/226/8/1362/6369311

Zaidi & Dehgani-Mobaraki 2022. The mechanisms of action of ivermectin against SARS-CoV-2—an extensive review. The Journal of antibiotics, 75(2): 60-71: https://www.nature.com/articles/s41429-021-00491-6

The WHO on the recent outbreak: https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON599

Cliff Mass – There is no drought emergency: https://cliffmass.blogspot.com/2026/05/the-is-no-drought-e