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There may be no need to keep the Pfizer vaccine and other similar coronavirus vaccines at -70°C, potentially making it much easier to distribute them across the world. Two other teams using the same mRNA technology for their vaccines have found they remain stable for at least three months in a normal fridge.
The Pfizer vaccine candidate generated great excitement around the world this week when the company announced that it appears to be more than 90 per cent effective based on early results. …
source: newscientist.com