Data from the rollout of AstraZeneca's Covid-19 vaccine shows one dose of the shot results in 80 per cent less risk of death from the disease, Public Health England said on Monday.
It also said protection against death from the Pfizer-BioNTech (PFE.N), vaccine rises from approximately 80 per cent after one dose to 97 per cent after two doses in its new analysis.
PHE said the study was the first on protection against mortality from the AstraZeneca vaccine based on data from a real world setting.
The study looked at new symptomatic cases of Covid-19 between December and April and