RICH countries squabbling over COVID-19 vaccine supplies must consider the situation in poorer parts of the world, the World Health Organization has said, warning that hoarding of shots "keeps the pandemic burning". WHO officials were speaking after the European Commission said it had agreed a plan to control exports of vaccines from the European Union, including to Britain, arguing it needed to do so to ensure its own supplies. The EU, whose member states are far behind Israel, Britain and the United States in rolling out vaccines, is scrambling to get supplies just as the West's biggest drugmakers slow deliveries…