Vaccine clot patients ‘closely monitored’ as they may remain at risk, experts warn

02-Jun-2021 Intellasia | Telegraph | 5:02 AM Print This Post

People who suffer from the rare clotting side effect linked to the AstraZeneca/Oxford University jab could be at risk of future clots for several months, a leading haematologist has warned.

Dr Sue Pavord, who heads the expert haematology panel advising the government on the condition, said that those who fall ill post-vaccine are followed up every other day to try to prevent any relapses.

However, she said she is aware of one case where the person suffered another thrombosis. The patient made a full recovery.

There have been 332 cases of the rare side effect known as vaccine-induced thrombosis and thrombocytopenia (VITT) in the UK up to May 19.

Dr Pavord, a haematologist at Oxford University Hospitals, said that the number of initial cases has now slowed after a rush in April.

“But what is challenging us now is relapses, how to catch it early to stop it being significant, and what are the best treatments,” she said.

VITT involves a blood clot, either in the brain or elsewhere in the body, alongside low platelets, linked to the presence of antibody platelet factor 4. This antibody can be detected via a test.

Dr Pavord said that every patient tested still has the antibodies in their blood, several months after the cases first started to appear.

However, she said she “hopes” that the antibodies will fade soon, based on the fact that in a similar condition heparin-induced thrombocytopenia, brought on by a blood-thinning treatment they disappear in a few months.

She said the patients need to monitor themselves for similar symptoms as people are initially being asked to watch out for around five days after vaccination, including an unusually bad headache.

“We ensure when people go home they have the information, and they monitor their symptoms, and have alternate day platelet counts, and then a weekly follow-up in clinic,” she added.

The risk of the rare side effect remains small, at around 13 per million doses of vaccine administered, or one in just less than 77,000.

Scientists are also racing to understand the cause of the rare side effect, to find out if the jabs can be tweaked to prevent the condition happening in the first place.

The side effect has also been linked to the Johnson & Johnson vaccine, which recently got approval in the UK.

https://www.telegraph.co.uk/global-health/science-and-disease/vaccine-clot-patients-closely-monitored-may-remain-risk-experts/

 

Category: Society

Print This Post

Comments are closed.