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When people were given a half dose of the AstraZeneca vaccine followed by a full dose at least a month later its efficacy rose to 90%. File photograph: Getty

The AstraZeneca Covid-19 vaccine developed with scientists at Oxford University continues to be in the news for all the wrong reasons. From being in(...)

Pharmacist Asha Fowells after vaccinating Judy Phillips with her first dose of the Oxford/AstraZeneca coronavirus vaccine in south London. Photograph: Yui Mok/PA Wire

It has been difficult to keep track of the events concerning access to vaccines over the last few days. Just over a week ago, the EU Commission signal(...)