Coronavirus, Covıd-19, Vaccine, Ema, Astrazeneca

Coronavirus, Covıd-19

EU regulator finds possible link between AstraZeneca COVID-19 vaccine and rare blood clots

EU regulator finds possible link between AstraZeneca COVID-19 vaccine and rare blood clots

7/4/2021 6:06:00 PM

EU regulator finds possible link between AstraZeneca COVID-19 vaccine and rare blood clots

BRUSSELS: The European Medicines Agency ( EMA ) said on Wednesday (Apr 7) it had found a possible link between AstraZeneca's coronavirus vaccine and ...

AdvertisementThe EMA announcement is a fresh setback for the vaccine, which is sold at cost, for a few dollars a dose, and is by far the cheapest and most high-volume launched so far. After extensive use in Britain and mainland Europe, it is set to be the mainstay of vaccination programmes in much of the developing world.

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Experts say that, even if a causal link between the vaccine and blood clots is proved, the risks to the general population of getting a serious clot are vanishingly small compared to the risks from possible COVID-19 infection, which can also cause similar clots, or from many other widely used drugs such as the birth control pill.

Both the EMA and the World Health Organization have said the benefits outweigh the risks of the vaccine."The risk of mortality from COVID is much greater than the risk of mortality from these rare side effects," EMA's executive director Emer Cooke said on Wednesday. headtopics.com

AdvertisementAstraZeneca has said previously its studies have found no higher risk of blood clots in those vaccinated than in the general population.But the shot has faced questions since late last year, when the drugmaker and Oxford University published data from an earlier trial with two different efficacy readings as a result of a dosing error.

Last month, AstraZeneca published early results of its US late-stage clinical trial showing the shot was 79 per cent effective, but had to scramble to release more data after a rare rebuke from US health officials, who said the data was outdated.Scientists are exploring several possibilities that might explain the rare brain blood clots. One theory suggests the vaccine triggers an unusual antibody in some rare cases; other investigators are looking into a possible link with birth control pills.

But many experts say there is no definitive evidence, and that it is not clear whether or why AstraZeneca's vaccine would cause a problem not shared by other vaccines that target a similar part of the coronavirus. Read more: CNA »

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