Covid-19 vaccines reduced the potential death toll during the pandemic by nearly 20 million (1 million = 10 lakhs) or more than half in the year following their implementation.
While in the first year of the vaccination programme, 19.8 million out of a potential 31.4 million Covid-19 deaths were prevented worldwide, according to estimates based on excess deaths from 185 countries and territories, the researchers said.
Additionally, the study estimates a further 5,99,300 lives could have been saved if the World Health Organisation's target of vaccinating 40 per cent of the population in each country with two or more doses by the end of 2021 had been met.
The study estimated the number of deaths that were prevented between December 8, 2020 and December 8, 2021, which reflects the first year in which the vaccines were distributed.