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The risk of Covid infection decreases by 90 per cent in fully vaccinated 12 to 18-year-olds, a study suggests.
Researchers from the Clalit Research Institute in Israel analysed data from 94,354 adolescents who had received two doses of the Pfizer vaccine.
In those doubled jabbed, the risk of symptomatic Covid decreased by 93 per cent compared to those unvaccinated.
And the risk of infection decreased by 90 per cent. The results, published in the New England Journal of Medicine, also found those who had received their first dose were still 57 per cent less likely to get symptomatic Covid and 59 per cent less likely to be infected.
Separate research by the University of Edinburgh also found Pfizer is 90 per cent effective at preventing deaths from the Delta variant, while AstraZeneca is 91 per cent.
The risk of Covid infection decreases by 90 per cent in fully vaccinated 12 to 18-year-olds, a study of 94,354 adolescents suggests (stock image)
The Israel study took place between June and September this year, during which the Delta variant was the dominant strain in the country.
Professor Ran Balicer, senior author