COVID 19 Tech

AstraZeneca vaccine: 79% effective and no rare blood clots in US trial

Enlarge / Vials of the AstraZeneca COVID-19 vaccine are seen during the opening of a vaccination centre in Cyprus, on March 22, 2021. (credit: Getty | Etienne Torbey) Exceeding expectations, AstraZeneca’s two-dose COVID-19 vaccine appeared highly effective against symptomatic and severe disease in a new late-stage trial conducted partly in the US. The company said […]