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?
Me küsisime, missugusele  protsendile maailma üheaastastest lastest on  tehtud leetrite- ja muu vastased vaktsiinid, mis on aastaid olemas olnud: 20, 50 või 80%?