Pfizer Vaccine May Cause Blood Clots and Discussions about the Need for a Third Dose

A British study confirmed that the “Pfizer” vaccine increases the risk of developing blood clots, just as the “Moderna” vaccine. This was the result after examining approximately 490,000 people vaccinated with these two vaccines. The same study, which was conducted by researchers at the University of Oxford, compared the two vaccines mentioned and “AstraZeneca”, to conclude that the risk of developing blood clots in the cerebral veins following vaccination with the “AstraZeneca” vaccine reaches 5 cases per million people. In contrast, this percentage is about 4 cases for “Pfizer” and “Moderna” vaccines. As for the portal vein, (the blood vessel that carries blood from the intestine to the liver), the researchers estimated the risk of blood clots in people receiving the “AstraZeneca” vaccine at 1.6 per million people, compared to 44.9 for “Pfizer” and “Moderna”.

“Moderna” vaccine caused a blood clot in the deep veins of a vaccinated person from Colorado, United States, at the age of 49. He almost died before entering the intensive care unit after having suffered severe pain and swelling in his left leg, as confirmed by the British newspaper “Daily Mail”. He added “On the other hand, the new variants of Coronavirus will play a major role.  It is very important to reduce the number of people exposed to the virus.”

The director of the Covid-19 task force within President Joe Biden’s administration also emphasized that Americans should expect to receive a vaccine booster shot to protect them from spreading the new variants of Coronavirus.”

Currently, the vaccines “Pfizer” and “Moderna” are the best available, being 95% and 94.1% effective against Covid 19, according to clinical studies.

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