Oxford kept COVID-19 vaccine trial volunteers in dark about dosing error

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LONDON: About 1,500 of the initial volunteers in a late-stage clinical trial of the Oxford/AstraZeneca COVID-19 vaccine were given the wrong dose, but weren’t informed that a mistake had been made after the blunder was discovered, documents obtained by Reuters show. Instead, the dosing mishap was presented to the trial participants in a letter dated June 8 as an opportunity for University of Oxford researchers to learn how well the vaccine works at different doses.

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