inclusion criteria: participant is willing to give written informed consent for participation in the trial. participants should receive 2 doses of the azd1222. evidence of this will be gathered from medical history and/or medical records including the covid-19 vaccine registration yellow card.

inclusion criteria: participant is willing to give written informed consent for participation in the trial. participants should receive 2 doses of the azd1222. evidence of this will be gathered from medical history and/or medical records including the covid-19 vaccine registration yellow card.