The device – the size of a sticking plaster – is easier to transport and store than standard injections, especially in remote areas.
Measles is a very contagious disease which is common in children, and can kill.
Protecting vulnerable children worldwide is a priority, experts say.
Microscopic needles
Despite the existence of a very effective measles jab, falling vaccination levels since the Covid pandemic have left millions of children unprotected, particularly in low- and middle-income countries.
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