All of Africa has reached a very important milestone. The World Health Organization has declared that the entire continent is now free of the wild poliovirus. This comes after four years without a single case. With this historic milestone, five of the six WHO regions – representing over 90% of the world’s population – are now free of the crippling disease. The world is now closer to achieving global polio eradication. If it can be done, it will be the second infectious disease, after smallpox, to be eliminated. It has not been easy. It’s taken decades and millions of health workers traveling by foot, boat, bus and bicycle to reach children in remote geographic areas. Health workers have even braved conflict to prevent children from enduring life-long disability and paralysis. In 1996, South African President Nelson Mandela, with the support of service organization Rotary International, jumpstarted Africa’s commitment to polio …