New study says a fifth of the world's population may not get vaccinated for Covid until 2022

According to a study conducted by researchers from the Johns Hopkins Bloomberg School of Public Health, nearly a fifth of the world's population may not get Covid vaccine doses until 2022. The report also finds that wealthy nations that account for just 14 percent of the world's population have pre-ordered more than half of the vaccine doses expected to be produced by the 13 leading drug firms next year.