Major new UK study shows overwhelming effectiveness of AstraZeneca and Pfizer vaccines

A major new study of people who have received a coronavirus vaccine in the UK has found that a single dose of the AstraZeneca can lower the risk of death with coronavirus by 80%. The new report for Public Health England also shows protection against death from the Pfizer-BioNTech vaccine rises from approximately 80% after one dose to 97% after two doses.