On December 31, 2020, one year after the novel coronavirus was first detected, the World Health Organisation gave the Pfizer-BioNTech vaccine emergency validation, making it the first to become available to the general public. It was just seven months after the vaccine's trials began – a record-breaking development time. Other vaccines followed. AstraZeneca, Moderna, Sinopharm, Sputnik V and Johnson & Johnson are now household names. Hundreds of millions of doses of these vaccines have been administered worldwide. But with more than 7.5 billion people on Earth, and with most types requiring two shots, we still have a long way to go. On this week's Beyond the Headlines, host Suhail Akram looks at how we vaccinate the world.
