The Pfizer/BioNTech was available first so there is more data, but the Oxford/AstraZeneca was mostly used in the older age group. It is an important point but we cant at the moment say anything about that, he said. The study was not set up to look at any differences between the two. Sheikh cautioned at a media briefing that the results are preliminary data, yet to be peer-reviewed by independent scientists, but added: I am very encouraged. Sheikh cautioned at a media briefing that the results are preliminary data, yet to be peer-reviewed by independent scientists, but added: I am very encouraged.
A study is coming out to determine whether or not several groups won.
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A study is coming out to determine whether or not several groups won .
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