This video explains health equity and the interconnected factors that contribute to health inequities and health disparities.

For 10,000 years, humanity suffered from the scourge of smallpox. The virus killed almost a third of its victims within two weeks and left survivors horribly scarred. But Simona Zompi commends the brave souls — a Buddhist nun, a boy, a cow, a dairymaid and physician Edward Jenner — who first stopped the spread of this disastrous disease, to make us smallpox-free today.