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?
Perguntámos: "Em todo o mundo, "qual é a percentagem  de crianças de um ano "que tomaram as vacinas básicas  contra o sarampo e outras coisas "que tivemos durante muitos anos: "20, 50, ou 80 por cento?"