Episode Details

Most people think the cold chain is just a refrigerator on a truck. It's not. It's a system where a single degree of temperature change for thirty minutes can destroy ten thousand doses — and nobody knows until the vial reaches the clinic. This episode breaks down the chemistry, containers, and logistics that made Israel's Pfizer vaccine rollout a global case study. From dry ice sublimation and phase-change materials to GPS loggers that record every minute, we explore what actually happens when a vaccine has to stay colder than Antarctica through airports, trucks, and loading docks — to a clinic that doesn't even own a -70 freezer.