Pfizer and BioNTech vaccine is aproved in UK as a first western country and they will start vaccination next week and it will be the first country to do so on such a large scale, they expect 10 million vaccines by the end of the year. This is huge win for the Pfizer as they are first and its really likelly that US and EU will follow till end of the year. So we can expect their share continue to rise. (Strasburg, Wall Street Journal)