Pfizer's vaccine is unusually difficult to ship and store: It is administered in two doses given 28 days apart, has to be stored at temperatures of about minus 100 degrees Fahrenheit and will be delivered in dry ice-packed boxes holding 1,000-5,000 doses.

 

Pfizer's vaccine is unusually difficult to ship and store: It is administered in two doses given 28 days apart, has to be stored at temperatures of about minus 100 degrees Fahrenheit and will be delivered in dry ice-packed boxes holding 1,000-5,000 doses. https://t.co/WKTZZnCKYU

— ProPublica (@propublica) November 21, 2020