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AstraZeneca suspension: Blood-clot risk ‘no higher in vaccinated people’

Europe's medicines regulator said Thursday there appeared to be no higher risk of blood clots in those vaccinated against Covid-19, after Denmark, Norway and Iceland suspended use of the AstraZeneca jab.

AstraZeneca suspension: Blood-clot risk 'no higher in vaccinated people'
Photo:Piroschka Van De Wouw/Reuters/Ritzau Scanpix

“The information available so far indicates that the number of thromboembolic events in vaccinated people is no higher than that seen in the general population,” the European Medicines Agency told AFP by email when asked about the suspension.

The Amsterdam-based regulator said it understood the Danish decision “has been taken as precaution”.

The EMA said the decision followed the regulator’s own announcement on Wednesday that it was “reviewing thromboembolic events reported in temporal association with the vaccine” after reports of cases in Austria.

The watchdog said it “will continue its assessment and EMA will communicate updates as soon as possible,” the agency said.

In its announcement on Austria on Wednesday, the EMA had said there had been 22 ‘thromboembolic events’ among three million people who received the vaccine across the European Economic Area, which includes Norway and Iceland.

The Danish suspension, which will be reviewed after two weeks, is expected to slow down the country’s vaccination campaign.

Austria said on Monday that it had suspended the use of a batch of AstraZeneca vaccines after a 49-year-old nurse died of “severe blood coagulation problems” days after receiving an anti-Covid shot.

Four other European countries — Estonia, Latvia, Lithuania and Luxembourg — have also suspended the use of vaccines from this batch, which was sent to 17 European countries and consisted of one million jabs.

Denmark however suspended the use of all of its AstraZeneca supply, as did Iceland and Norway in subsequent announcements on Thursday citing similar concerns.

AstraZeneca has said that an analysis of its own data did not show any increased risk of blood clots, Danish news wire Ritzau reports.

“An analysis if our data has not shown any form of risk of blood clots in the lungs or in deep veins within any age group, sex, in any batch (of vaccines) or in any country that has used AstraZeneca’s Covid-19 vaccine,” it said in a written comment.

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COVID-19

Public Health Agency recommends two Covid doses next year for elderly

Sweden's Public Health Agency is recommending that those above the age of 80 should receive two doses of a Covid-19 vaccine a year, once in the spring and once in the autumn, as it shifts towards a longer-term strategy for the virus.

Public Health Agency recommends two Covid doses next year for elderly

In a new recommendation, the agency said that those living in elderly care centres, and those above the age of 80 should from March 1st receive two vaccinations a year, with a six month gap between doses. 

“Elderly people develop a somewhat worse immune defence after vaccination and immunity wanes faster than among young and healthy people,” the agency said. “That means that elderly people have a greater need of booster doses than younger ones. The Swedish Public Health Agency considers, based on the current knowledge, that it will be important even going into the future to have booster doses for the elderly and people in risk groups.” 

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People between the ages of 65 and 79 years old and young people with risk factors, such as obesity, diabetes, poor kidney function or high blood pressure, are recommended to take one additional dose per year.

The new vaccination recommendation, which will start to apply from March 1st next year, is only for 2023, Johanna Rubin, the investigator in the agency’s vaccination programme unit, explained. 

She said too much was still unclear about how long protection from vaccination lasted to institute a permanent programme.

“This recommendation applies to 2023. There is not really an abundance of data on how long protection lasts after a booster dose, of course, but this is what we can say for now,” she told the TT newswire. 

It was likely, however, that elderly people would end up being given an annual dose to protect them from any new variants, as has long been the case with influenza.

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