Single dose of AstraZeneca vax '80% effective' in preventing death

New data show its protection is about the same as Pfizer’s COVID-19 vaccine

Just one dose of AstraZeneca’s COVID-19 vaccine is about 80% effective in preventing COVID-19 deaths in the elderly, according to a real-world analysis by Public Health England.

AstraZeneca vaccine

The impact resulted from a combination of the vaccine preventing infections and better survival among patients with a breakthrough infection after a single dose, the researchers said in the study, published preprint on Tuesday.

The research covered 50,000 Brits aged 70 or over and looked at the proportions who died