Over half of the world’s population has received at least one dose of a Covid vaccine. Supply is still a big problem, especially in poorer countries where less than 10% of people are vaccinated. But even when vaccines are available, some remain hesitant to take them.
BBC Reality Check's health reporter Rachel Schraer answers some of your concerns - from pregnancy side effects to the speed at which vaccines were developed.
Motion graphics by Jacqueline Galvin
Additional reporting by Chiagozie Nwonwu, Fundanur Ozturk and Waenur-aihan Waedoloh
Source - BBC News