A number of highly allergic individuals have had acute allergic reactions to the COVID-19 Vaccine available in the UK from Pfizer/BioNTech pharmaceuticals. It appears to be an excipient in the vaccine called Polyethylene Glycol that causes these reactions. It is therefore advised to avoid this Covid-19 vaccine if allergic to polyethylene glycol, or if you have a history of severe allergic reactions to medication, vaccines and foods. We don’t have a reliable test to identify those at risk and are following guidance from the UK Department Health and the British Society for Allergy and Clinical immunology