evidence: As with all medicines, COVID-19 vaccines have side effects, but these are far outweighed by the benefits in terms of protection against severe disease and death. [...] Events of hypersensitivity and anaphylaxis have been reported following COVID-19 vaccination. [...] Very rare events of TTS may occur after vaccination with COVID-19 vaccines Vaxzevria (previously COVID-19 Vaccine AstraZeneca) and Jcovden (previously COVID-19 Vaccine Janssen).