19 March 2013 - The first round of South Sudan's 2013 polio vaccination campaign began today, targeting over three million children across the country.

The World Health Organization is providing the national Ministry of Health with financial and technical support during the four-day effort, while UNICEF is assisting with mobilization and providing vaccines.

South Sudan's last polio case was reported in June 2009. During that year, a total of 40 cases were reported, but none have been documented since then.

As campaigns generally run four times a year, the country should be having three more in 2013.