over three anderton 50,000 children are being paralyzed by this disease every single day, every single year when the initiative was launched just 20 years ago. and it is a disease widespread not only in a show when we started the irrevocation initiative, but also in africa of course. by the time we got started, thanks to the work of the hero of polio, the disease that large had been eradicated from the americas. so, devastating disease but also one which in contrast to hiv, tv, malaria and other diseases we have the to-- tool to eliminate forever.