Covid vaccines saved around 20 million lives in the first year they were introduced, a new study has found.
Researchers, led by academics at Imperial College London, made estimates on the effectiveness of the vaccines in 185 countries since the first dose was administered in December 8, 2020.
It found that more deaths were prevented in wealthier countries in the year that followed. The total number of lives saved in high and middle income countries was 12.2 million.
Estimates on the number of people saved on a worldwide scale in the first year was 19.8 million.
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Around 66 per cent of the world’s population has received at least one jab.
The paper, published in the journal Lancet Infectious Diseases, also suggests that a further 600,000 deaths could have been prevented if the World Health Organisation’s target of vaccinating 40% of the population in every country by the end of 2021 had been met.
“Covid-19 vaccination has substantially altered the course of the pandemic, saving tens of millions of lives globally,” the authors wrote.
“However, inadequate access to vaccines in low-income countries has limited the impact in these settings, reinforcing the need for global vaccine equity and coverage.”
Researchers used data and estimates on vaccination rates, Covid-19 deaths and excess death records.
Experts from Johns Hopkins University in the US have estimated that some 6.3 million people have died from Covid-19 around the world.
The university’s Covid tracker suggests that there have been more than 540 million cases of the virus globally.
Meanwhile, some 11.6 billion jabs have been delivered.
Dr Oliver Watson, lead author of the study from Imperial College London, said: “Our findings offer the most complete assessment to date of the remarkable global impact that vaccination has had on the Covid-19 pandemic.
“Of the almost 20 million deaths estimated to have been prevented in the first year after vaccines were introduced, almost 7.5 million deaths were prevented in countries covered by the Covid-19 Vaccine Access initiative (Covax).
“This initiative was set up because it was clear early on that global vaccine equity would be the only way out of the pandemic.
“Our findings show that millions of lives have likely been saved by making vaccines available to people everywhere, regardless of their wealth.
“However, more could have been done. If the targets set out by the WHO had been achieved, we estimate that roughly one in five of the estimated lives lost due to Covid-19 in low-income countries could have been prevented.”
Head of the NHS Vaccination Programme Steve Russell said: “The world watched as the NHS delivered the first covid-19 vaccine outside of clinical trials to Maggie Keenan in December 2020, shortly followed by the first AstraZeneca vaccine just a month later.
“It is now fantastic to see the impact of the speed and precision of the NHS covid-19 vaccination rollout, how it contributed to saving hundreds of thousands of lives across the country but also paved the way for the rest of the world to follow our lead.”
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