
Update on Vaccine-Derived Polioviruses - Worldwide, January 2017-June 2018
Published on October 25, 2018
Since the Global Polio Eradication Initiative was launched in 1988 (1), the number of polio cases worldwide has declined by >99.99%.

Since the Global Polio Eradication Initiative was launched in 1988 (1), the number of polio cases worldwide has declined by >99.99%.