'Global vaccine coverage has yet to return to 2019’s levels, before the Covid-19 pandemic disrupted immunisation programmes. That year, 12.8 million children were classed as “zero-dose” and a further 5.5 million as under-vaccinated.
More than half of the world’s zero-dose children live in 10 countries, which officials said were “a mix of those with large birth cohorts, weak health systems or both”'