Polio eradication Global polio eradication programs have been part of international public health efforts since the 1980s. Now, only two countries (Pakistan and Afghanistan) are polio-endemic, meaning that the disease regularly circulates in those areas. In 1988, polio was endemic in over 125 countries. This past August, Africa achieved a major milestone – no polio cases in a year. The last polio case on the continent was reported in Somalia in August 2014. Nigeria has also played a big role in combatting polio. Thanks to aggressive vaccination campaigns, Nigeria celebrated one year without a case of polio in July 2015 and was removed from the list of polio-endemic countries. Countries can be declared polio-free three years after the last ...