More is Different • 6 implied HN points • 07 Feb 26
- Engineered baker's yeast that displays viral proteins can trigger protective antibody responses when eaten, showing edible vaccines are possible.
- Yeast vaccines can be produced and distributed quickly and locally—through brewing, dried chips, or feed—making decentralized pandemic and livestock responses feasible.
- Edible yeast vaccines may reduce needle-related hesitancy and lower some regulatory barriers, but they still face important challenges like oral tolerance, safety, and the need for proper clinical trials and regulatory clarity.