In this post in the Bill & Melinda Gates Foundation’s “Impatient Optimists” blog, Bill Gates, co-chair of the foundation, reflects on Angola’s success against polio, writing, “Angola marked a full year without a new case of polio” this month, an accomplishment that serves as “the latest evidence that we are extremely close to ending polio forever.” He continues, “Polio is a formidable foe and Angola is one of the world’s poorest nations with numerous health challenges to tackle, which makes Angola’s achievement especially noteworthy,” adding, “Like all 125 countries that have gotten rid of polio since 1988, Angola’s leaders and citizens also deserve the global resolve needed to ensure that no country ever has to go back and re-do the hard, expensive work that’s already been done to protect their children from polio” (8/27).