I am hetero Factor V Leiden - 2 weeks after getting the 1st pfizer covid vaccine I developed blood clots in my lungs. Pfizer's Covid vaccine approved by FDA for emergency use - CNBC • People with other predisposition to form blood clots, such as those with Factor V Leiden, or other non-immune thrombophilic disorders For example, studies estimate that anywhere between 3% and 15% of people in Europe have Factor V Leiden, a genetic condition passed through generations that increases the risk of blood clots. Who should, and should not get the Covid-19 vaccine - CNN A new study by Public Health England has found two doses of either the AstraZeneca or Pfizer COVID-19 vaccine are "highly effective" against the B.1.617. Blood clot risks: comparing the AstraZeneca vaccine and the ... for factor V Leiden mutation and prothrombin gene 20210 G/A mutation were both negative. Impaired Blood Clotting May Explain Higher COVID-19 Risk What are the ingredients in the COVID-19 vaccines? Here what's in the ... Thrombotic Thrombocytopenia after ChAdOx1 nCov-19 Vaccination There are also other risk factors that may increase the likelihood of making blood clots. . That reduction in COVID-19 mortality has probably come about in part through reduced clotting, by reducing the inflammation that triggers the clotting. Based on the current evidence, patients with VITT are advised to complete their course of COVID-19 vaccinations. The Johnson & Johnson COVID-19 vaccine was linked to an increased frequency of blood clotting, so I would not recommend that vaccine. But is safe and may prevent severe COVID-19 infection. Moderna, Pfizer vaccines are best for those with clot risk