Vaccines may increase brain vein clots in severe COVID-19

Vaccines may increase brain vein clots in severe COVID-19

Note that views expressed in this opinion article are the writer’s personal views and not necessarily those of TrialSite.

Dr. Ron Brown

June 9, 2021

A June 8, 2021 article in Medpagetoday.com claims that brain vein clots are less likely with vaccines than with severe COVID. Brain Vein Clots Less Likely With Vaccine Than With Severe COVID | MedPage Today. Stated another way, incidence of brain vein clots (cerebral venous sinus thrombosis – CVST) is higher in severely ill people with COVID-19 than in otherwise healthy people who develop brain vein clots as an adverse effect of COVID-19 vaccines (vaccine-induced thrombotic thrombocytopenia – VITT). Although there is nothing particularly astonishing about comparing blood clot outcomes in groups of seriously ill and healthy people, the author of the Medpagetoday.com article appears to draw a misleading conclusion about vaccine risk-benefits from these data. The author’s interpretation seems to be that people who wish to avoid brain vein clots have a better chance of protection if they are vaccinated, even with the potentially small risk of brain vein clots from the vaccine. The logic is clear: vaccines prevent COVID-19, and so...

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