University of Oxford study supports use of COVID-19 Vaccine AstraZeneca as third dose booster against Omicron Neutralising antibody levels against Omicron following a third dose boost of COVID-19 Vaccine AstraZeneca were broadly similar to levels achieved after two doses against the Delta variant. AstraZeneca’s Vaxzevria (ChAdOx1-S [Recombinant]) significantly boosted […]