In low-income countries, the main problems you have is infectious diseases.

In low-income countries, getting to a health post is hard. It's very expensive.

In inner-city, low-income communities of color, there's such a high correlation in terms of educational quality and success.

If you're low-income in the United States, you have a higher chance of going to jail than you do of getting a four-year degree. And that doesn't seem entirely fair.

Measles is the most contagious of our infectious diseases.

Rich countries can afford to overpay for things.