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?
Бид дэлхий дээрх 1 настай хүүхдүүдийн хэдэн хувь бидний хэрэглэдэг улаанууд зэрэг түгээмэл вакцинуудад хамрагдсан байдаг вэ гэж асуусан. 20%, 50%, эсвэл 80%?