Vaccine transport in dry ice
What are the procedures for carrying dry ice onboard aircraft? Can dangerous levels of carbon dioxide be detected?
For its vaccine, Pfizer
designed special cooler containers that can be stuffed with dry ice, which is solid carbon dioxide. But aviation authorities limit how much dry ice can be carried on planes because it turns to gas, making the air potentially toxic for pilots and crews.
https://www.nytimes.com/2020/12/10/b...ant=0_identity