Radiolab Antibiotic Apocalypse
94 snips
Mar 27, 2026 
Bruce Stewart-Brown, Purdue Chicken CMO who led removing routine antibiotics from poultry. Steffanie Strathdee, infectious disease epidemiologist who helped rescue her husband with bacteriophage therapy. Avir Mitra, emergency physician and special correspondent reporting live on antibiotic resistance. They tour hospitals, farms, sewers and labs. They explore bacterial evolution, farm-to-human spread, stewardship, and phage therapy as a countermeasure.
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Doctor's Timeline Watching Drugs Fail
- Avir Mitra watched antibiotic efficacy erode over a decade, from common MRSA treatable with vancomycin to infections requiring toxic drugs like colistin.
- He observed progression: community MRSA, vancomycin resistance, carbapenem resistance, then reliance on last-resort Colistin with severe side effects.
Bacteria Outspeed Us Through Horizontal Gene Transfer
- Bacteria spread resistance far faster than humans because they exchange genes horizontally via sex pili, not just vertically through reproduction.
- Avir demonstrated with the glow-stick exercise: one mutation in trillions of bacteria can cascade rapidly across populations.
Economic Hole In Antibiotic Development
- Antibiotic pipeline has collapsed: few new classes since ~1980 because drug development economics don't reward short-lived antibiotics.
- Pharmaceutical firms avoid costly R&D when bacteria will likely evolve resistance within years, making antibiotics a poor return on investment.
