In health news, Africa has been declared free from wild polio as over 95% of the continent’s population has been vaccinated after a decades-long immunization campaign. A quarter-century ago, the water-borne disease left tens of thousands of children across Africa paralyzed each year. Since then, billions of oral polio vaccines have been provided across the continent. Wild polio is now found only in Afghanistan and Pakistan, and health experts say eliminating it there would permanently eradicate the disease.