![]() The study, based on the health records of 29.1 million people in England, suggests while there is a slightly increased risk of developing low platelet levels and blood clots in the veins after a first dose of AstraZeneca, being infected with the virus raises this risk much more, and for longer. Study shows risk of blood clots is far greater from coronavirus than the vaccineĪ study by the University of Oxford shows that having Covid-19 puts you at a much higher risk of developing dangerous blood clots than the AstraZeneca or Pfizer vaccines. The study authors hope that scientists will be able to build on these findings to reduce the risk of these extremely rare side effects, as well as informing the development of future vaccines. ![]() More research still needs to be done in this area. They think that in extremely rare cases, this may trigger a chain reaction in the immune system, which could result in blood clots developing. They discovered that the adenovirus in the vaccine (which is used to deliver genetic instructions to the cells) can bind with a protein found in the blood, called platelet factor 4. Research from Cardiff University and Arizona State University has found a possible explanation of the link between the AstraZeneca vaccine and rare blood clots. Visit the MHRA Yellow Card report for the latest data on reported side effects.The European Medicines Agency has listed this as a rare possible side effect of the vaccine. Some of the blood clots were an unusual type of blood clot in blood vessels that drain blood from the brain called a cerebral venous sinus thrombosis (CVST). Platelets are involved in blood clotting, and these abnormally low levels can be a sign that your body’s normal clotting mechanisms are not working properly. The cases of blood clots that the MHRA reviewed were accompanied by abnormally low levels of platelets in the blood. The MHRA emphasised that any risks of the Oxford/ AstraZeneca vaccine continue to outweigh the risks for the vast majority of people. Six of these deaths occurred after the second dose. Of the 444 people who developed blood clots, 80 died. These 444 cases of blood clots are after an estimated 24.9 million first doses, and 24.2 million second doses of the vaccine in the UK. Up to 24 August 2022, there were 444 reports of people developing rare blood clots which were linked to low platelet levels (thrombocytopenia) after receiving a dose of the Oxford/ AstraZeneca vaccine in the UK.īlood clots after the vaccine are rare. Visit the NHS for the full list of possible side effects for the AstraZeneca vaccineĬan the AstraZeneca vaccine cause blood clots?.The most common side effects are: discomfort at the injection site, or feeling generally unwell, tired, or feverish, or a headache, feeling sick or having joint or muscle pain. The vast majority of side effects that have been reported for the Oxford/AstraZeneca vaccine are mild and short-term. While the Oxford/AstraZeneca vaccine is no longer being offered in the UK, the Medicines and Healthcare products Regulatory Agency (MHRA) still monitors potential side effects from this vaccine. What side effects can the AstraZeneca vaccine have? The Novavax vaccine has also been approved for people who can’t have mRNA-based vaccines due to allergies. No, the UK government is not ordering future supplies of the AstraZeneca Covid-19 vaccine.Įvidence shows that mRNA vaccines, Pfizer and Moderna, are more effective at boosting protection from Covid-19, so these vaccines are being recommended for the autumn booster programme. Is the AstraZeneca vaccine still being used in the UK? Does the AstraZeneca vaccine cause stroke?.Why might these rare blood clots happen?.Can the AstraZeneca vaccine cause blood clots?.What side effects can the AstraZeneca vaccine have?.Is the AstraZeneca vaccine still being used in the UK?.The latest on the AstraZeneca vaccine, from why it is no longer available in the UK, to statistics on the risk of blood clots. AstraZeneca Covid vaccine: safety and side effects
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