Covid-19 vaccines have prevented an estimated 20mn deaths globally in the first year since their initial deployment, according to a new peer-reviewed study.
Researchers at Imperial College London found the vaccines reduced the potential global death toll from Covid-19 by more than half in the same period, they said on Thursday, announcing the results of the study published in The Lancet medical journal.
The mathematical modelling study looked at deaths directly and indirectly linked to Covid-19 vaccination, using death records and total excess deaths, or estimates where no official data was available.
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