The risk reportedly is observed within males in their teens and 20 as per Amesh Adalja. Hence, Adalja says that he would prescribe a patient a J&J vaccine if the patient had a chance of developing myocarditis.

Pfizer Vaccines have comparatively lesser chances of causing blood clotting than other vaccines 

Bill Gates and WHO Chairperson, Pfizer Vaccines COVID-19 Cause Blood Clotting
Bill Gates and WHO’s Director General Dr. Tedros, image courtesy of World Health Organization

The Pfizer-BioNTech vaccination program in U.K Beganon on December 8, 2020. The program studied the elderly, the medically vulnerable, and those with chronic diseases such as diabetes or high blood pressure. 51% of the study were female, 79% white, and 84% were under 70 years.

  1. They compared the incidences of thromboses (Blood clotting) before and after the first dosage of the vaccine. They found that the risk of blood clotting was lower in the 28 days after the first dose of either AstraZeneca or Pfizer-BioNTech compared to before they were vaccinated.

A recent FDA Pfizer Vaccines study shows otherwise

According to the U.S. Food and Drug Administration (FDA) recently, Pfizer’s COVID-19 Vaccine is linked with causing blood clotting. The report reports that clotting occurs primarily in observed elderly patients. A form of clotting in the lungs met the threshold of providing a statistical signal that links it to Pfizer Vaccine dosages.

pulmonary embolism—blood clotting in the lungs—met the initial threshold for a statistical signal and continued meeting the criteria after a more in-depth evaluation. Researchers figured out data that included over 17.4 million elderly Americans who got their vaccine dosages between December 10, 2020, and Jan. 16, 2022.


So the immediate conclusion feels like – per FDA Pfizer vaccine reports, yes they do cause blood clotting. But both Johnson and Johnson and AstraZeneca were reported to cause thromboses in the initial reports of early 2020. The reports that we mentioned above also only studied the patients for a very numbered period of time.

  1. But the larger crux of this argument feels like this: health complicacy is usually, well complicated. A general example is that higher cigarette smoking is linked to an increased risk of cancer.
    1. But such increased risk is not definitive that one will have cancer. The causes of cancer can be numerous, including it being genetic. As such, we have to account that other causes than the vaccines could be leading to blood clotting.
  2. And at the same time, we have to be open to the idea that the vaccine itself could be a prime cause. Only then could we proceed towards better medical technologies that will learn from their mistakes.
    1. Almost the entirety of the history of pharmaceutical drugs is based on trials and errors. It is unsound logically, to think that the results of vaccines from the initial trials in 2020 are definitive for a lifetime.
SOURCES: The research paper on covid 19 vaccine causing blood clotting in the elderly TheWashingtonPost, PopSugar, MedicalNewsToday