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 within 28 days of receiving

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