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AstraZeneca coronavirus vaccine trial in US on hold until at least midweek: sources

Enrollment in AstraZeneca's global trials of the vaccine, which it is developing with researchers at Oxford University, was put on pause on September 6

twitter-logoReuters | September 15, 2020 | Updated 08:45 IST
AstraZeneca coronavirus vaccine trial in US on hold until at least midweek: sources
AstraZeneca on Saturday said it had resumed its trial in Britain after regulators completed their review of a serious side effect in one trial participant there

AstraZeneca's COVID-19 vaccine trial remains on hold in the United States pending a US investigation into a serious side effect in Britain even as other trials of the vaccine resume, sources familiar with the details told Reuters.

AstraZeneca on Saturday said it had resumed its trial in Britain after regulators completed their review of a serious side effect in one trial participant there.

It was the first indication that the US trial will remain on hold until the US Food and Drug Administration and a safety panel investigate the case.

Also Read: India coronavirus vaccine trials 'not stopped yet': Serum's Adar Poonawalla after AstraZeneca halts global trials

Enrollment in the company's global trials of the vaccine, which it is developing with researchers at Oxford University, was put on pause on September 6.

Sources told Reuters that enrollment of new patients and other trial procedures for the pivotal US trial were being rescheduled until at least midweek and that it was not clear how long it would take for the FDA to complete its probe.

Governments around the world are desperate for a vaccine to help end the pandemic, which has caused more than 900,000 deaths and global economic turmoil. The World Health Organization (WHO) had flagged AstraZeneca's as the most promising. A prolonged delay in the US trial could slow access to the vaccine in the United States.

Also Read: AstraZeneca incident shows coronavirus vaccine can't be developed in hurry: Kiran Mazumdar Shaw

The British adverse event involved a study patient thought to be suffering from a rare spinal inflammatory disorder called transverse myelitis.

An AstraZeneca spokeswoman declined to comment on when the US trial would resume. She said in an email the company "will continue to work with health authorities across the world, including the FDA, and be guided as to when other clinical trials can resume."

The status of the South African and Indian trials remains unknown, but the trial in Brazil has also restarted. The company has not commented on timing of resumption in other parts of the world besides Britain.

FDA did not immediately respond to a request for comment.

Also Read: AstraZeneca's coronavirus vaccine enters phase 3 trials in US

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