We asked, what is the percentage of the world's one-year-old children who have got those basic vaccines against measles and other things that we have had for many years: 20, 50 or 80 percent?
Nous avons demandé, quel est le pourcentage de bébés d'un an qui reçoivent ces vaccins de base, comme la rougeole et autres, que nous avons depuis des années : 20, 50 ou 80 % ?