AstraZeneca have for the first time admitted that their Covid-19 vaccine could cause a rare side effect that can lead to blood clots and death.
The UK-Swedish pharmaceutical company are fighting a class action lawsuit alleging that their inoculation, which was developed in collaboration with the University of Oxford, is “defective” and less safe than was expected, an allegation the company deny.
A multi-million-pound landmark “vaccine damage” case is set to take place in London's High Court. It was initiated by Jamie Scott, a father of two, who suffered a blood clot that left him with brain damage after he was vaccinated in April 2021 in the midst of the Covid-19 pandemic. The case being brought under the Consumer Protections Act argues that the Oxford-AstraZeneca vaccine was less safe than consumers were entitled to expect. A key part of the argument is over the efficacy of the vaccine, which claimants argue was “vastly overstated”.
In May 2023, AstraZeneca had insisted that “we do not accept that TTS (Thrombosis with Thrombocytopenia Syndrome) is caused by the vaccine at a generic level”, as quoted by The Daily Telegraph.
TTS is a rare condition, in which a person develops blood clots which can reduce blood flow when combined with a low platelet count, prompting difficulties with stopping bleeding. TTS symptoms include severe headaches and abdominal pain.
Despite previous denials, AstraZeneca said in documents which were submitted to the UK High Court in February, that “it is admitted that the AZ vaccine can, in very rare cases, cause TTS. The causal mechanism is not known”.
And they maintained that their available data showed the drug has “an acceptable safety profile” and that “regulators around the world consistently state that the benefits of vaccination outweigh the risks of extremely rare potential side effects”.
Dozens of Western countries suspended the use of AstraZeneca’s vaccine in the spring of 2021 over fears it may have caused some patients to develop blood clots. At the time, the head of the European Medicines Agency’s (EMA) vaccines strategy, Marco Cavaleri, said that there was an evident link between AZ vaccine intake and blood clots in the brain, but maintained that the benefits still outweighed the risks.
FYI, the AstraZeneca coronavirus vaccine has an efficacy of 72% only, according to World Health Organization data.



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