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Covishield vax can cause side effects: AstraZeneca

Vaccine maker has admitted in UK court that its Covid vaccine can cause a blood clot related side effect in very rare cases

Covishield vax can cause side effects: AstraZeneca

London: UK-headquartered pharmaceutical giant AstraZeneca (AZ) has admitted that in “very rare cases” its Covid vaccine can cause a blood clot related side effect but the causal link is unknown, according to court papers being quoted in the UK media.

‘The Daily Telegraph’ , a British newspaper, reported that in a legal document submitted to the High Court in London in February for a group action being brought by 51 claimants, AZ admitted that the vaccine developed with the University of Oxford to protect against Covid-19 may cause Thrombosis with Thrombocytopenia Syndrome (TTS) in ‘very rare cases’.

The AZ Vaxzevria vaccine, also manufactured by the Serum Institute of India (SII), was known in India as Covishield. “It is admitted that the AZ vaccine can, in very rare cases, cause TTS. The causal mechanism is not known. Further, TTS can also occur in the absence of the AZ vaccine (or any vaccine). Causation in any individual case will be a matter for expert evidence,” the newspaper quoted the legal document as stating.

Lawyers acting on behalf of the claimants say they, or their loved ones, who received the AZ vaccine suffered TTS - a rare syndrome characterised by the concurrence of thrombosis or blood clotting and thrombocytopenia or insufficiency of platelets. The consequences of TTS are potentially life-threatening including strokes, brain damage, heart attacks, pulmonary embolism and amputation.

Of the 51 claimants in the group action being represented by the law firm Leigh Day for damages under Section 2 of the UK’s Consumer Protection Act 1987 against AstraZeneca UK Ltd in respect of injuries sustained as a result of the vaccine, 12 are acting on behalf of a loved one who died. “All of those within the group have death certificates or medical evidence confirming that the vaccine caused the deaths and injuries suffered,” said Sarah Moore, partner at Leigh Day.

“It has taken AstraZeneca a year to formally admit that their vaccine has caused this harm, when this was a fact widely accepted by the clinical community since the end of 2021. In that context, regrettably it seems that AZ, the government and their lawyers are more keen to play strategic games and run up legal fees than to engage seriously with the devastating impact that the vaccine has had upon our clients’ lives,” she said. It is the claimants’ case that the safety of the AZ vaccine fell below the level of safety that persons were generally entitled to expect. AZ has strongly denied the claims. “Our sympathy goes out to anyone who has lost loved ones or reported health problems. Patient safety is our highest priority, and regulatory authorities have clear and stringent standards to ensure the safe use of all medicines, including vaccines,” AstraZeneca said in a statement.

“From the body of evidence in clinical trials and real-world data, the AstraZeneca-Oxford vaccine has continuously been shown to have an acceptable safety profile and regulators around the world consistently state that the benefits of vaccination outweigh the risks of extremely rare potential side effects,” it noted.

The British-Swedish multinational points out that product information relating to the vaccine was updated in April 2021, with the approval of the UK regulator, to include “the possibility that the AstraZeneca-Oxford vaccine is capable, in very rare cases, of being a trigger for TTS’.

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