The UN Office for the Coordination of Humanitarian Affairs (OCHA) has launched a new element of a data tool focusing on the roll-out of Covid-19 vaccines in countries experiencing humanitarian emergencies, said the office. The new element will track both vaccines allocated through COVAX and deliveries to the countries on the watch list. The tool also tracks which countries have received donations or procured vaccines, said OCHA on Friday, Xinhua news agency reported. COVAX, the global tool to procure and deliver vaccines for low- and middle-income countries, has allocated 73 million doses to 25 countries with humanitarian emergencies in the first round, with deliveries already under way, it said.