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UK jab trial in kids on hold as clot link probed

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A British trial of the AstraZeneca coronavirus vaccine on children has been paused, Oxford University said on April 6, as global regulators rush to assess its possible link to rare blood clots in adults. AFP

UK jab trial in kids on hold as clot link probed

A British trial of the AstraZeneca coronavirus vaccine on children has been paused, Oxford University said on April 6, as global regulators rush to assess its possible link to rare blood clots in adults.

The university, which helped develop the embattled vaccine, said in a statement that there were “no safety concerns” in the trial, but acknowledged fears over a potential link to clots by saying that it was awaiting additional data from Britain’s Medicines and Healthcare products Regulatory Agency (MHRA) before restarting the study.

“Parents and children should continue to attend all scheduled visits and can contact the trial sites if they have any questions,” it added.

It is the latest drama to hit AstraZeneca, which has been embroiled in controversy over its failure to deliver promised doses to the EU, and over the jab’s efficacy and safety profile.

The MHRA is one of many bodies across the globe analysing real world data from the AstraZeneca rollout to see if there is a definitive link between the jab and a rare form of blood clot, after cases were initially reported in Norway and continental Europe.

The MHRA reported over the weekend that there had been 30 blood clotting cases, seven fatal, out of the 18 million doses administered in Britain.

The European Medicines Agency (EMA) on April 6 said it “has not yet reached a conclusion and the review is currently ongoing”.

EU Health Commissioner Stella Kyriakides later said the agency was expected to make its decision “late Wednesday [April 7]”, adding that she was in “close contact” with the EMA.

The statement came after the EMA’s head of vaccine strategy Marco Cavaleri was quoted in Italian media as saying that there was a “clear” connection and that the agency would announce it within hours.

“In my opinion, we can say it now, it is clear there is a link with the vaccine,” Cavaleri told Italy’s Il Messaggero newspaper in an interview. “But we still do not know what causes this reaction.”

Germany and France have both restricted use of the vaccine to older people over fears that younger recipients are potentially more at risk from clots.

Britain and the vaccine’s developers had until now resisted any restrictions in its use, saying that there was no proof of any link.

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