How does Moderna differ from the Pfizer vaccine?
It requires temperatures of around minus 20 degrees Celsius for shipping – similar to a normal freezer.
The jab manufactured by Pfizer and BioNTech requires temperatures closer to minus 75 degrees Celsius, making transport logistics more difficult.
Like the Pfizer jab, the Moderna vaccine also requires a second booster shot, coming 28 days after the first, compared with 21 for Pfizer.
Moderna is based in Cambridge, Massachusetts, and had previously said that the “vast majority” of its doses would be manufactured there. Pfizer/BioNTech is being manufactured in several countries, including Germany and Belgium.
Canada plans to get two million doses of the Moderna vaccine by March – part of a total 56 million doses. The UK has already pre-ordered seven million doses. Japan has signed up for 50 million doses, South Korea for 20 million, and Switzerland has ordered 7.5 million.