Just 6 out of 6million given AstraZeneca Covid jab have suffered blood clots after their second dose


Only SIX out of 6million Britons given AstraZeneca’s Covid jab have suffered blood clots after their second dose, official data shows

  • UK regulator revealed six cases of clots in fully vaccinated Brits in weekly update
  • Until now had only been found in people given one dose, with 242 cases spotted 
  • Risk remains tiny, experts say, and people more likely to die if not vaccinated

Only one in a million Britons given AstraZeneca’s coronavirus vaccine suffer the rare blood clotting disorder after getting their second dose, official data showed today.

Britain’s medical regulator found six out of 5.9million people who received a second injection developed the rare combination of blood clots and low platelet counts.

It appears to be far less common after the second dose than the first, with 242 cases detected in the 22.6m people given one shot, a rate of about one in 100,000. 

Until now experts thought the rare disorder – believed to be an overreaction by the immune system to the jab – was exclusively happening in the first dose group.

But the absolute risk of the condition is still tiny. For comparison, an estimated six out of 10,000 women suffer serious blood clots from taking birth control every year.  

Forty-nine Britons given a first dose of the AstraZeneca vaccine died as a result of the clotting disorders. It’s unclear if any patients given two doses have passed away. 

Analysis published yesterday found people are three times more likely to die if they have not had the vaccine. 

The six new cases after a second dose were revealed in the UK Medicines & Healthcare products Regulatory Agency’s weekly report. It includes data up to April 28.

MHRA officials said that despite the update, ‘the advice remains that the benefits of the vaccine outweigh the risks in the majority of people’.

The risk of blood clots after the Oxford jab is ‘small’ with people three times more likely to die if they have not had the vaccine (file)

The risk of blood clots after the Oxford jab is ‘small’ with people three times more likely to die if they have not had the vaccine (file) 

The British vaccine was first linked to the rare blood clots in March, and several European countries including Denmark and Norway, went against World Health Organization advice and halted their rollouts amid concerns over the risks.

The UK medicines regulator has recommended that adults under 30 should be offered an alternative to the vaccine – such as the Pfizer or Moderna jabs – out of an abundance of caution.

For every other age group the benefit of being vaccinated against Covid is deemed far superior to the risk of the jab itself. 

It comes after a major analysis in Denmark and Norway found the risk of blood clots after the AstraZeneca jab is ‘small’ with people three times more likely to die if they have not had the vaccine.

Researchers looked at the nationwide rates of blood clots and related conditions in 280,000 people who had had the jab between February and March this year.

They found slightly increased rates of vein blood clots including clots in the veins of the brain, compared with expected rates in the general population.

However, the researchers stress that the risk of such adverse events was low while those who were unvaccinated were almost three times more likely to die than those who had it. 

Using national health records, researchers identified rates of events, such as heart attacks, strokes, deep vein blood clots and bleeding events within 28 days of receiving a first vaccine dose and compared these with expected rates in the general populations of Denmark and Norway.

The team of researchers compared data on 281,264 people – about four fifths were women – and compared this with data from the general population.

The researchers found 59 blood clots in the veins compared with 30 expected in the general population.

This equates to 11 excess blood clotting events per 100,000 vaccinations, including 2.5 additional blood clots in the brain per 100,000 vaccinations.

They found no increase in the rate of arterial clots, such as heart attacks or strokes, according to the findings in the British Medical Journal.

Meanwhile, researchers found 15 deaths from all causes after vaccination with the Oxford-AstraZeneca vaccine compared with an expected 44 deaths, showing a lower chance of death after the vaccine. 



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