Dear experts
The past 17/05/2021 the EMA published this good news, I share the link: https://www.ema.europa.eu/en/news/more-flexible-storage-conditions-biontechpfizers-covid-19-vaccine
It is the best that will improve the cold chain of Pfizer¨s vaccine, at the end, all the vaccines will be between 2°C and 8°C.