Progress in vaccinating children against a variety of life-threatening diseases has stalled in the past two decades - and even gone backwards in some countries - a new global study suggests.
The situation has been made worse by the Covid pandemic, leaving millions of children unprotected from diseases such as measles, tuberculosis and polio.
The researchers are calling for a concerted effort to provide better and more equal access to vaccines.
Child health experts warn that cuts to international aid budgets that fund vaccination programmes, combined with vaccine scepticism, are creating a "perfect storm".
The global childhood vaccination programme has been a huge success.
Since 1974, more than four billion children have been vaccinated, preventing an estimated 150 million deaths worldwide.
In nearly half a century until 2023, researchers say vaccine coverage doubled.
But since 2010 progress has stagnated, to the extent that there are now wide variations in vaccine coverage around the world.
A study, published in the medical journal The Lancet, external, says measles vaccinations have declined in nearly 100 countries.
Source: BBC News, 25 June 2025
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