I used to work for a biotech company that shipped products at -70, -20 (normal freezer) and 2-8 (refrigerated). It's normal to ship using dry ice or refigerated gel packs. It's generally a cheaper alternative than temperature controlled containers but comes at the risk that a delayed shipment will result in the product becoming too warm at so will likely need to be thrown out. If you're interested you can google "active vs passive cold chain logistics" and you'll find lots of articles discussing the pros and cons of both and how to decide which one is right for your product.
I can't guarantee that Pfizer isn't cutting corners but nothing they are doing here is sounding any alarm bells to me
It was a seasonal Christmas reference, not a PHd dissertation.
But, just try it. If you take a standard motel ice-bucket, fill it up with ice from the ice machine, and put it in your motel-room fridge it will stay frozen for days. I say that as a drunk who has done it often
It takes very little to keep something frozen that is already frozen.
I used to work for a biotech company that shipped products at -70, -20 (normal freezer) and 2-8 (refrigerated). It's normal to ship using dry ice or refigerated gel packs. It's generally a cheaper alternative than temperature controlled containers but comes at the risk that a delayed shipment will result in the product becoming too warm at so will likely need to be thrown out. If you're interested you can google "active vs passive cold chain logistics" and you'll find lots of articles discussing the pros and cons of both and how to decide which one is right for your product.
I can't guarantee that Pfizer isn't cutting corners but nothing they are doing here is sounding any alarm bells to me
-70c is just the optimal temp for shelf stability. Transport definitely reduces the shelf life of the vaccine, just not enough to actually matter.
Sorry, but you are being nuts.
If you take a turkey out of the freezer at -7C it takes days to thaw out in the fridge at 7C.
If you take vaccine at -100C and pack it with dry ice at -80C it takes days for it to thaw out.
And you have to remember, the goal is for it to thaw out. They obviously can't inject you with the Devil's sperm if it is solid like a rock.
It was a seasonal Christmas reference, not a PHd dissertation.
But, just try it. If you take a standard motel ice-bucket, fill it up with ice from the ice machine, and put it in your motel-room fridge it will stay frozen for days. I say that as a drunk who has done it often
It takes very little to keep something frozen that is already frozen.