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Clinical features of rare clotting events after COVID-19 vaccines, ‘Vaccine-Induced Immune Thrombocytopenia and Thrombosis’ (VITT)

This article was published on
August 11, 2021

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A study published in the New England Journal of Medicine (NEJM) looks at the clinical features of Vaccine-Induced Immune Thrombocytopenia and Thrombosis (VITT).

A study published in the New England Journal of Medicine (NEJM) looks at the clinical features of Vaccine-Induced Immune Thrombocytopenia and Thrombosis (VITT).

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Clinical Features of Vaccine-Induced Immune Thrombocytopenia and Thrombosis

Not peer-reviewed
This work has not been scrutinised by independent experts, or the story does not contain research data to review (for example an opinion piece). If you are reporting on research that has yet to go through peer-review (eg. conference abstracts and preprints) be aware that the findings can change during the peer review process
Peer-reviewed
This work was reviewed and scrutinised by relevant independent experts.

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Expert Comments: 

Prof Kevin McConway

In a sense there’s nothing new for the general public here – it was already known that the prognosis for someone with VITT is pretty bad, and it was also already known that it’s not at all common.  Though this paper does say something about the incidence rate of VITT in vaccinated people (“Thus, the approximate incidence of VITT was at least 1:100,000 among patients 50 years of age or older and at least 1:50,000 among patients in the younger group (<50 years of age)”), that’s pretty much the same as is said in the weekly coronavirus vaccine adverse effect reports from MHRA at https://www.gov.uk/government/publications/coronavirus-covid-19-vaccine-adverse-reactions/coronavirus-vaccine-summary-of-yellow-card-reporting.  So nothing has really changed on the balance of risks and benefits of vaccination.

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