How a British Covid-19 vaccine went from pole position to troubled start
Published: Dec 24, 2020 10:26 AM | Updated: Dec 24, 2020 12:35 PM
On June 5, researchers at the University of Oxford quietly made a change to a late-stage clinical trial of their Covid-19 vaccine. In an amendment noted in a document marked ‘confidential’, they said they were adding a new group of participants.
The adjustment might seem minor in a large-scale study. But it masked a mistake that would have potentially far-reaching consequences: Many of the United Kingdom trial subjects had inadvertently been given only about a half dose of the vaccine...
View Comments0
Report this comment
500 characters remaining
Are you sure you want to delete this comment?
This action cannot be undone.