Investments in immunization yield a rate of return on a par with educating our children - and higher than nearly any other development intervention.

As many times as [HIV] changes its clothes, it's still wearing the same socks, and now our job is to make sure we get the body to really hate those socks.

Investments in immunization yield a rate of return on a par with educating our children - and higher than nearly any other development intervention.

We've actually eliminated Type II polio in the world, at least as far as we can tell.

The best vaccine imaginable is only valuable to the extent we get it to everyone who needs it.

Healthy children are more likely to attend school and are better able to learn. Healthy workers are more productive. More productive economies mean greater stability in developing countries and improved security in the West.

When it comes to providing aid, developing innovations and making bold steps that change the course of history, the United States is usually on the front lines.