The World Health Organization says nearly a dozen countries — many of them in Africa — have yet to receive a single vaccine dose. U.N. Secretary-General António Guterres said Wednesday the world needs to double its vaccine production capacity while at the same time making vaccine distribution more equitable.

Secretary-General António Guterres: “It is totally unacceptable to live in a world in which developed countries can vaccinate most of its population while many developing countries have not had access to one single dose. … With the virus spreading like wildfire in different parts of the developing world, the risk of mutations, the risk of new variants, is such that we risk to have a situation in which the vaccines that exist today will no longer be effective. So it’s in the interest of everybody that everybody is vaccinated everywhere.”