Category efficacy

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

Enlarge / Vials of the AstraZeneca COVID-19 vaccine are observed throughout the opening of a vaccination heart in Cyprus, on March 22, 2021. Covid-19 Coverage Look at a lot more stories Exceeding expectations, AstraZeneca’s two-dose COVID-19 vaccine appeared highly powerful…