The regulatory body states that the risk is currently estimated to be around one in 100,000 for people over 50 and one in 50,000 for people aged between 18 and 49 years.
For people aged between 18 and 49 the guidance states that “if you are offered the [University of Oxford/AstraZeneca] vaccination you may wish to go ahead after you have considered all the risks and benefits for you.”
Why are younger cohorts at a greater risk?
The mechanisms triggering the blood clots following the AstraZeneca vaccine administration are still under investigation.
What is causing the blood clots?
Initial evidence suggests that episodes of vaccine-induced thrombosis and thrombocytopenia (VITT) are caused by an overreaction of the immune system.
This reaction leads to both low platelet levels and blood clots.
Scientists have reported a similar very rare phenomenon following the administration of heparin (an anticoagulant drug commonly used to treat or prevent blood clots), which is called heparin-induced thrombocytopenia (HIT).
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The consensus amongst health bodies is that the impact of vaccines on reducing the risk of COVID-19 largely outweighs the small risk of developing blood clots.
The general population appears to have accepted this view.
There are some concerns that reports of rare blood clots could have an impact in vaccine uptake.
If you are not eligible yet, wait to be contacted – the NHS will let you know when it’s your turn to have the COVID-19 vaccine.
It’s important not to contact the NHS for a vaccination before then.
If you are eligible, you can book appointments at a larger vaccination centre or pharmacy now, or wait to be invited to go to a local NHS service.
This post originally appeared on Daily Express :: Health Feed