Rollout of Pfizer's coronavirus vaccine hits some speed bumps amid confusion over shipments

Rollout of Pfizer's coronavirus vaccine hits some speed bumps amid confusion over shipments

Source: 
BioPharma Dive
snippet: 

The rollout of Pfizer and BioNTech's coronavirus vaccine in the U.S. has had several hiccups this week, with several thousand doses diverted after getting too cold and growing confusion between the federal government, states and Pfizer over how many doses are being delivered, and when.
Earlier in the week, the temperature of four trays of vaccine doses, shipped to California and Alabama, dropped about 10 degrees Celsius lower than the specified range before delivery, leading to those doses being returned and replaced, Gen. Gustave Perna, who heads operations for the U.S.' Operation Warp Speed initiative, said Wednesday.