Other aspects of the data from the trials have also sparked concern among scientists, with the drugmaker at the time failing to explain why they used two different dosing regiments and why the size of the study group was significantly smaller than the other.
In the second group, 8895 participants received a full dose followed by another full dose at least a month later. This group was only 62 per cent protected.A researcher in a laboratory at the Jenner Institute in Oxford, England, works on the coronavirus vaccine developed by AstraZeneca and Oxford University.
A point of confusion emerged on Tuesday, when AstraZeneca's Executive Vice President Mene Pangalos told Reuters that a lab error was the reason why some volunteers had received a smaller dose. Oxford's communications manager for vaccines told CNN on Wednesday that "dose selection for any new vaccine is a complicated area, and in exploring methods of dose selection, we discovered one gave a lower dose than expected."A researcher in a laboratory at the Jenner Institute in Oxford, England, works on the coronavirus vaccine developed by AstraZeneca and Oxford University.
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