CDC: Information about COVID-19 coronavirus vaccines for people with allergies

If you are allergic to an ingredient in a COVID-19 vaccine:  If you have had a severe allergic reaction or an immediate allergic reaction—even if it was not severe—to any ingredient in an mRNA COVID-19 vaccine, you should not get either of the currently available mRNA COVID-19 vaccines (Pfizer-BioNTech and Moderna).… ...More...

France: Scientists recommend changing coronavirus vaccination technique after AstraZeneca thrombosis investigation

Thus, one of the hypotheses linking the vaccine to the occurrence of severe thrombosis could be an accidental intravenous injection which, in the presence of factors not fully identified, would generate a discordant immune reaction with activation of the platelets, potentially associated with a NET effect or with a decrease in the level of ACE2 on the surface of endothelial cells, leading to an increased risk of thrombosis....More...