The Graphic Truth: Are top COVID vaccine makers hoarding supply?

More than 930 million doses of COVID-19 vaccine have already been administered globally, and another 1 billion more are expected to be manufactured by the end of May. Most of the manufacturing is concentrated in a small group of countries. While some — like China, for instance — are exporting roughly half of the shots they make, others — mainly the US — are keeping most of the supply for domestic use. Meanwhile, export controls have been a particularly thorny issue in the European Union and India, where governments have come under intense pressure to stop sending vaccines to other parts of the world amid sluggish rollouts at home. We take a look at what the world's top manufacturers are doing with the vaccines they are producing.