The use of the word “prevalent” in the title is not merely misleading it is outright wrong. “Prevalent” in such a context would imply “as widespread”, yet the incidence of blood clots after either vaccine is not widespread.
“According to the study, 4 in 1 million people experience cerebral venous thrombosis after getting the Pfizer or Moderna vaccine, versus 5 in 1 million people for the AstraZeneca vaccine.”
4 out of 1 million and 5 out of 1 million is miniscule, not “prevalent” and not widespread.
Likewise, a 99.7% survival rate for the naturally occurring variants of COVID means the death rate is miniscule, but here we are arguing over an “authorized” vaccine.
It is certainly not widespread, according to these numbers. Personally, my guess is that there are many times more blood clots post-vaccination but that they are not being blamed on the vaccine. I think there is usually some medical history that can pointed to as a a plausible cause, and as a result these cases are not captured within these very low numbers. But that is just a guess. Alternatively, one is free to believe the government, WHO and Big Pharma.