"[W]e are teaming up to tackle one of the most ambitious public health goals ever set: eradicating polio, a disease that has haunted humanity at least since ancient Egypt," New York City Mayor Michael Bloomberg, founder of Bloomberg L.P., and Bill Gates, chair of Microsoft and co-chair of the Bill & Melinda Gates Foundation, write in a Wall Street Journal opinion piece. "The Gates Foundation has been investing in polio eradication for many years, and Bloomberg Philanthropies is now joining the effort with a $100 million commitment. Together, we are supporting the Global Polio Eradication Initiative's new six-year strategic plan for eradication," they continue.