Booster doses just got approved in the US. At least 15 countries haven’t vaccinated 3% of their people yet

Health officials in the United States have said Covid-19 vaccine boosters can begin for older and higher-risk people there. But at least 15 countries around the world — most of them in Africa — have yet to give at least one vaccine dose to more than 3% of their population.Health officials in the United States have said Covid-19 vaccine boosters can begin for older and higher-risk people there. But at least 15 countries around the world — most of them in Africa — have yet to give at least one vaccine dose to more than 3% of their population.