AstraZeneca plans new Oxford vaccine trial to prove jab works on all ages

More volunteers will be recruited to test half-dose regimen as critics question latest results

AstraZeneca pharmaceutical lab
(Image credit: Getty/AFP)

A fresh global trial of the Oxford Covid-19 vaccine is being launched to clarify how effectively the jab protects older age groups - and banish doubts that have emerged since preliminary results were published on Monday.

“The company wants the new test to confirm the 90% efficacy rate that the shot showed in a portion of an existing trial,” Bloomberg reports.

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Holden Frith is The Week’s digital director. He also makes regular appearances on “The Week Unwrapped”, speaking about subjects as diverse as vaccine development and bionic bomb-sniffing locusts. He joined The Week in 2013, spending five years editing the magazine’s website. Before that, he was deputy digital editor at The Sunday Times. He has also been TheTimes.co.uk’s technology editor and the launch editor of Wired magazine’s UK website. Holden has worked in journalism for nearly two decades, having started his professional career while completing an English literature degree at Cambridge University. He followed that with a master’s degree in journalism from Northwestern University in Chicago. A keen photographer, he also writes travel features whenever he gets the chance.