Unsourced post claims COVID-19 booster caused 34 blood clots

Misinformation linking COVID-19 vaccines to blood clots is widespread and persistent online. Debunking messaging may explain that there is no evidence that mRNA vaccines increase vaccine risk and that blood clots have been reported as an extremely rare adverse reaction to two non-mRNA COVID-19 vaccines. Messaging may also emphasize that COVID-19 infection increases blood clot risk far more than any COVID-19 vaccine and highlight that viral images of alleged vaccine-related blood clots are almost always unsourced, and, in some cases, are not blood clots at all.

Fact Checking Source(s): Nebraska Medicine, Poynter, University of Buffalo